Spare Part Piston for 13 mm Barrel Pneumatic Spearguns

The Spare Part piston is specifically designed for pneumatic spearguns with a 13 mm barrel, ensuring compatibility with the SL, Cyrano, Sten and Salvimar Predathor pneumatic models.

This component is essential for maintaining mechanical efficiency and consistent pressure, ensuring steady accuracy and optimal power during spearfishing and freediving.

Timely piston replacement preserves the speargun’s strength and reliability over time, contributing to smooth, responsive operation during dives.

Piston for Mares Pneumatic Spearguns

Spare Part specifically for the piston of Mares pneumatic spearguns, designed to ensure reliability and precision during the shot.

Available in sizes for 11 mm and 13 mm barrels, compatible with pneumatic speargun models that use these standard diameters.

Technical Features

• Durable material, suitable for withstanding mechanical stress during air compression and release in the pneumatic system
• Specific dimensions for precise fit with the barrel, ensuring proper sealing and smooth movement
• Designed to maintain consistent thrust and speargun accuracy for freediving spearfishing and underwater use

Use

• Compatible exclusively with Mares pneumatic spearguns with 11 mm or 13 mm barrels
• Easy replacement to maintain optimal performance of the pneumatic system
• Ensures responsive handling and effective thrust transmission during freediving and spearfishing

Cressi Spare Part Piston for SL/Star Pneumatic Spearguns

Original Cressi Spare Part designed to ensure maximum efficiency and reliability in SL and Star pneumatic spearguns. This spare piston is engineered to provide optimal sealing and mechanical resistance, essential for maintaining shot power and accuracy in spearfishing.

Compatible with Cressi SL and Star pneumatic models, it allows you to quickly restore proper speargun function while maintaining the original factory technical specifications.

Salvimar Pole Spear: Close-Range Spearfishing Tool

The Salvimar Pole Spear is a tool specifically designed for spearfishing, requiring a capture technique based on close-range shots. This hunting method, while traditional, is effective for prey that requires precision and speed during the aiming phase.

Technical Features

• Made from anodized Ergal, a material known for its high mechanical strength and light weight, optimizing handling and efficiency underwater.
• Structure made of two tubular sections screwed together, ensuring easy assembly and durability.
• Equipped with a rubber sling connected to one end for propulsion, and a stainless steel prong (model Paralizer) attached to the other end to ensure accuracy and penetration when landing fish.
• 14 mm version suitable for small to medium-sized fish, providing an ideal balance between responsiveness and power.

In-Water Advantages

The anodized Ergal construction improves the tool’s durability in saltwater environments, maintaining a lightweight trim and promoting smooth movement during finning and the approach to the fish.

The tubular design with a screw joint makes transport and maintenance easier, while the rubber sling provides adequate propulsion force for fast, accurate shots.

Salvimar 18 mm Pole Spear for Spearfishing

The Salvimar Pole Spear is a dedicated tool for spearfishing based on traditional, targeted techniques. Designed for use at close range, it requires experience and strong freediving skills for a precise and effective shot.

Technical Features

• Anodized Ergal construction for light weight and mechanical strength in the underwater environment.
• Made of two tubular sections screwed together for a solid, compact assembly.
• Equipped with a band connected to one end to propel the spear tip or prong.
• Complete with 17.4 ph stainless steel spear tip, a material known for its balance of strength and corrosion resistance.
• Tube diameter: 18 mm, suitable for targeting medium to large fish while freediving.

Use and Benefits

Using a pole spear requires precision and timing, essential elements for ensuring an efficient catch in spearfishing. The anodized Ergal construction provides an optimal balance between resistance to marine elements and light weight, improving handling and power transfer during the shot.

The modular design with two tubular sections allows for easy maintenance and transport, while the band system provides smooth propulsion of the spear tip, minimizing energy loss and improving shot effectiveness on medium to large fish.

Tightening Knob with Nylon Handwheel and Stainless Steel Screw

The tightening knob is made with a nylon handwheel and a stainless steel screw, providing an optimal combination of mechanical strength and light weight. This component is particularly suitable for securing and adjusting underwater equipment such as cameras, video cameras, and action cameras used in freediving and spearfishing.

Technical Features

• Corrosion-resistant materials for the marine environment thanks to the use of stainless steel
• Nylon handwheel for ergonomic operation that makes manual tightening easy without tools
• Includes rubber washer to improve sealing and protect contact surfaces
• Standard compatibility with 1/4 inch camera mounts, commonly used on supports for underwater equipment

Applications in Freediving and Spearfishing

The Sigal Sub 1/4 inch camera screw ensures secure mounting of recording devices during freediving, providing stability and ease of use without compromising maneuverability. The choice of materials resistant to saltwater and humidity makes it suitable for continuous use in marine environments.

Kit Contents

• Tightening knob with nylon handwheel
• Stainless steel screw
• Rubber washer

Note: Price is for one piece.

Mares Training Buoy Flag Support

The support is designed to hold the Mares training buoy flag, an essential tool for freediving and spearfishing activities. This accessory ensures stable and functional attachment of the flag to the buoy, making identification and signaling in the water easier during training sessions.

The support is sold separately from the atoll (training buoy) and the flag, allowing you to easily replace or add the component without having to purchase the entire setup.

Technical Features

• Compatible with the specific Mares buoy flag
• Material resistant to corrosion and wear in marine environments
• Designed to keep the flag stable during freediving
• Easy to install and remove on the buoy

This support is an essential component for anyone using training buoys in freediving, as it ensures clear and safe visibility, improving efficiency and practicality during underwater training sessions.

Best Divers Wetsuit Bag / Changing Mat

The Best Divers wetsuit bag is designed for easy transport of freediving and spearfishing wetsuits, offering a practical and functional solution even during the changing phase.

Made from durable nylon, it ensures long-lasting performance and protection for your freediving and spearfishing gear. Its design allows it to be used as a protective changing mat when putting on or taking off your wetsuit, helping preserve the integrity and cleanliness of your equipment.

Technical features

• Material: wear- and moisture-resistant nylon
• Dual function: transport bag and changing mat
• Suitable dimensions for holding wetsuits in various sizes
• Makes it easier to manage and keep your gear in optimal condition

Stainless Steel Wire Fish Stringer - Medium Size

Medium size fish stringer made from stainless steel wire, ideal for collecting and holding fish during spearfishing sessions. The steel construction ensures mechanical strength and long-lasting durability, even in marine environments.

The practical, functional design allows you to effectively keep fish together either near the buoy or on board the boat, making it easier to manage and transport your catch during the spearfishing session.

Quick Attachment and Release System

The fish stringer is equipped with a quick opening and closing mechanism that allows fish to be inserted or removed easily and quickly, optimizing operations in the water and on board.

Beuchat Stainless Steel Ring Fish Stringer

The ring fish stringer is made from stainless steel wire, a material selected to ensure mechanical strength and durability in the marine environment. This accessory is designed to allow the catch to be carried in a practical, organized way during spearfishing sessions.

The ring design makes it easy to thread and secure captured fish, ensuring efficient catch management while in the water or when returning to the surface. Thanks to its shape and material, it provides stability and keeps the catch secure without compromising ease of handling.

This fish stringer is also commonly used in spearfishing competitions, where practicality and functionality are essential for fast, safe catch management.

Beuchat Stainless Steel Ring Fish Stringer

The ring fish stringer is made from stainless steel wire, ensuring high mechanical strength and long-lasting durability even in marine environments.

Designed to allow practical, organized transport of your catch, this accessory is ideal for spearfishing and freediving, making it easier to manage the load during the dive and on the return to the surface.

The ring structure provides a secure closure, keeping the catch well organized and preventing loss or damage to the fish.

The fish stringer is also widely used in spearfishing competitions, thanks to its reliability and ease of use in the water.

C4 Belt Fish Stringer by Marco Bardi

The C4 belt fish stringer was designed specifically for spearfishing and freediving, ensuring practicality and functionality during the dive. Made with durable materials and a design engineered for efficiency, it allows fish to be carried securely without compromising the freediver’s comfort.

Technical features

• Easy attachment: it attaches quickly to the belt even with weights already being worn, avoiding interruptions during spearfishing sessions.
• Pin with V-shaped head: makes it easier to thread the fish onto the line, reducing friction and the risk of damaging the catch.
• Plain Edge plastic line: does not damage the fish’s skin and does not absorb odors, preserving the quality of the catch during spearfishing.
• Mini cleat for line adjustment: allows the line to be wrapped to reduce bulk and optimize management of the fish stringer in the water.
• Ambidextrous use: can be attached on either the right or left side, ensuring maximum versatility according to the freediver’s habits.
• Integrated D-rings: two elements allow snap clips to be secured, increasing safety and attachment convenience during underwater activity.

Benefits for spearfishing

This fish stringer stands out for its light weight and ease of use, ensuring efficient carrying without compromising underwater mobility. The reduced bulk and quick adjustment option allow the freediver to stay focused on spearfishing technique, improving comfort and load management during the dive.

Salvimar Fish Stringer with Nylon Cable and Belt Spike Holder

The Salvimar fish stringer is an essential accessory for spearfishing, designed for safe, practical transport of your catch during underwater activity. The nylon cable construction provides high mechanical strength, ensuring durability even in the marine environment.

The attachment system with integrated spike holder allows you to secure the fish stringer directly to the belt, freeing the spearfisher’s hands and making movement underwater easier. This design ensures comfort and safety during underwater progression, minimizing the risk of loss or entanglement.

Technical Features

• Nylon cable resistant to wear and saltwater
• Sturdy spike holder for secure attachment to the belt
• Compact, lightweight design that does not restrict mobility
• Available in 5 colors: Black, Red, White, Military Green, and Acid Green

The Salvimar fish stringer is designed to integrate perfectly with freediving and spearfishing equipment, optimizing catch management with a functional and durable accessory.

Custom Band Preparation for Spearguns

Custom Band Preparation consists of the professional calculation, cutting, setup, and assembly of bulk bands, available in our catalog specifically for spearfishing.

The service is available for both circular and in-line bands, with assembly on metal or textile dyneema (or spectra) wishbones. You will receive the band ready to use on your speargun or roller.

The rubber needed for the preparation must be purchased separately in the dedicated bands section.

Information Required for Preparation

To ensure accurate setup, you must send the following details to info@deepbluesub.com, or to our WhatsApp number +393714213046:

1. Brand, model, and length of the speargun
2. Brand, model, diameter, and length of the shaft
3. Distance of the shark fins (or notches) from the speargun muzzle (hole or rubber anchoring point)
4. Preferences for shot and loading: progressive/soft, medium, or reactive

Available Variants

• Circular Band Preparation
• Circular Band Preparation with Hi-Tech Wishbone
• In-Line Band Preparation
• In-Line Band Preparation with Hi-Tech Wishbone

Technical Preparation Process

The preparation includes the precise calculation of the band’s cut length based on:

• Speargun dimensions and overall mass
• Type and specifications of the shaft
• Diameter and type of rubber selected
• Ideal stretch factor to ensure the right shot

After calculation, the technical preparation is carried out:

• Grinding of the ends or preparation of the cones
• Tying the bands onto metal or textile wishbones
• For textile wishbones, additional processing aimed at reducing bulk with the speargun loaded, improving hydrodynamics and handling in the water

All operations are carried out by specialized technicians to ensure precision and reliability with no intervention required by the user.

Absolute Cleaner: Specific Degreaser for Freediving and Spearfishing Masks

The result of a collaboration between C4 and Real Chimica, the well-known manufacturer of Chanteclair, Absolute Cleaner is an innovative, patented product for cleaning freediving masks. Ideal for permanently removing silicone oils from the glass lenses of new or used masks, it helps eliminate one of the main causes of fogging during dives.

Technical Features and Benefits

• Specific, patented formula for freediving and spearfishing masks that effectively removes silicone oils without damaging plastic parts or the skirt
• Solves the problem of the oily film that forms on the lenses after the silicone molding process at high temperatures
• Extensively tested and certified to ensure deep, safe cleaning of glass surfaces
• Compatible with new or used masks that have fogging issues caused by silicone residue

Instructions for Use

1. Spray the undiluted product on both surfaces of the lenses and on the skirt area before wetting them
2. Scrub the inner and outer lens surfaces vigorously for 4-5 minutes with a toothbrush or a sturdy cloth
3. Let the product work for at least 10 minutes, then rinse the mask thoroughly
4. Repeat the entire procedure (steps 1, 2, and 3) for optimal results

Note: It is not necessary to repeat the cleaning immediately before using the mask.

Applications and Benefits

Absolute Cleaner is a definitive solution for maintaining freediving and spearfishing masks, improving clarity and reducing the risk of fogging caused by silicone residue. It ensures a clear, consistent field of vision, optimizing diving conditions and underwater safety.

McNETT Sea Buff Granular Gel 37ml for Freediving Masks

Sea Buff granular gel is specifically formulated to effectively remove excess silicone oils found on new freediving and spearfishing masks. This step is essential to help prevent lens fogging before applying anti-fog, ensuring optimal visibility during spearfishing and freediving.

Technical Features and Benefits

• Removes oily silicone residues that compromise lens clarity.
• Helps maintain a clear field of view with no haze during freediving dives.
• Simple, targeted application to properly prepare the mask for in-water use.
• Compact 37 ml size, ideal to carry with you during time on the water.

Application Instructions

1. Apply the granular gel over the entire inner and outer surface of the mask.
2. Rub the lenses vigorously with your finger; at first your finger will slide over the surface.
3. Continue rubbing until your finger starts to “grip,” indicating the silicone oils have been removed.
4. Rinse the mask thoroughly with fresh water.
5. Repeat the treatment 2–3 times for optimal cleaning.

This treatment significantly improves the hold and effectiveness of the anti-fog, ensuring greater safety and comfort during freediving and spearfishing.

Professional Anchor for 500-Gram Buoys

This 500-gram grapnel marker anchor is specifically designed for reliably securing buoys and bodyboards during freediving and spearfishing activities. This solution provides effective, secure anchoring on different types of seabeds.

Technical Features

• Dual function: it can be used both as a grapnel anchor for solid anchoring, and as a simple marker weight with the flukes folded in when grapnel-style holding is not required.
• Its specific design ensures stability even in currents or on complex seabeds, allowing the buoy or bodyboard to stay in place in all conditions.
• The 500-gram weight is balanced to safely support very bulky float boards and kayaks used in freediving.

Applications

• Reliable anchoring of marker buoys and bodyboards during freediving sessions
• Support for float boards and kayaks, ensuring good hold on the seabed with no risk of slipping

The anchor’s versatility allows it to quickly adapt to underwater environment conditions and to the different needs of the spearfisher, improving comfort and practicality during use.

Salvimar T-Profile Protection for Fiber Blades

The Salvimar T-profile protection is an accessory specifically designed for fiber blades used in freediving and spearfishing. Made from durable, flexible rubber, it provides solid protection against impacts, scratches, and other mechanical damage that can compromise the integrity of the blades.

The ergonomic design of this T-profile allows for easy installation and a perfect fit along the blade edge, while ensuring good elasticity and long-lasting durability without limiting finning fluidity.

Warning: the listed price refers to one linear meter of protection.

Ultra-Clear Silicone Protection for Mares Watches

This clear silicone protective cover is specifically designed to protect Mares Matrix and Smart Freediving dive computers during freediving and spearfishing sessions. The soft, durable silicone material provides effective protection against scratches, dirt, and sand, helping prevent superficial damage to the device without compromising its functionality.

The cover offers an optimal fit that makes it virtually invisible once applied, ensuring reliable protection against impacts and the harsh conditions typical of the underwater environment. Its ultra-clear transparency allows a clear, direct view of the screen, maintaining full visibility of the computer’s information throughout the session.

Main Technical Features

• Material: soft, durable silicone for elasticity and comfort
• Protection against scratches, dirt, and sand
• Ultra-clear for maximum display readability
• Compatibility: Mares Matrix and Smart Freediving devices
• Easy installation and replacement
• Mechanical resistance and stable grip in marine environments

Thanks to these features, the silicone protection is an effective technical solution for keeping dive computers intact and easy to read during freediving or spearfishing sessions, while ensuring comfort and practicality without getting in the way during use.

Marco Bardi Lower Back Protection in High-Strength Nylon

The Marco Bardi lower back protection is a device designed to protect the lumbar area during freediving and spearfishing. Made from high-strength Nylon, this shaped rigid plate inserts easily into the weight belt, distributing the load over a wider area and reducing the risk of lower back inflammation.

Technical and Functional Features

• Material: high-strength Nylon for durability and toughness
• Shaped design: fits the natural curve of the lower back perfectly to help limit and correct excessive arching of the back
• Quick slots: allow easy insertion into the belt without removing the weights
• Non-slip: internal bends prevent the protection from shifting during the dive

Benefits During Use in the Water

The protection helps maintain a more horizontal position in the water, improving hydrodynamics and promoting optimal trim during spearfishing or freediving sessions. Load distribution reduces strain on the back, helping limit inflammation and lower back pain caused by the concentrated weight of the ballast on the belt.

Application

1. Insert the rigid plate into the slots of the weight belt
2. Position it over the lower back area
3. Check that the protection is stable and secured by the non-slip bends

Neoprene Loading Pad for Loading Spearfishing Spearguns

The Loading Pad in Neoprene is a technical accessory designed to be worn over a wetsuit or directly against the skin, increasing comfort when loading a band-powered speargun. Its added thickness protects the chest, providing a soft, durable surface where the speargun butt is placed during band loading.

This support is especially useful when used without a wetsuit or in warm water, when you prefer to wear only a rash guard. In these situations, the Loading Pad provides protection and comfort, helping prevent abrasions or discomfort caused by mechanical stress on the chest during loading.

Technical Features

• Made from Neoprene suitable for underwater use
• Protects the chest from direct contact with the speargun butt
• Helps ensure a secure, stable grip when loading a band speargun
• Compatible with wetsuits and thin garments such as rash guards
• Lightweight and durable, without restricting mobility
• Rob Allen production, a guarantee of quality and durability
• Made in South Africa

Roller Pulleys - SigalSub

The SigalSub roller pulleys are replacement and upgrade components specifically designed for roller system band spearguns. Sold as a pair, they are an integral part of the SigalSub Roller Speargun Line and stand out for their internal roller, which reduces band friction during loading and shooting, ensuring smoother operation compared to standard pulleys.

Roller Speargun Technology: Why Pulleys Make the Difference

In roller spearguns for spearfishing, the muzzle pulleys redirect the bands underneath the barrel as well, increasing the effective propulsion stroke. Pulley quality directly affects shaft exit speed, shooting power, range, and loading smoothness. SigalSub roller pulleys optimize this energy transfer, minimizing load loss and ensuring consistent performance dive after dive.

Technical Features

• Type: roller pulleys with internal rotating core
• Pulley outer diameter: mm 26
• Pulley groove diameter: mm 20
• Packaging: pair (2 pulleys)
• Construction: corrosion-resistant materials, suitable for saltwater use
• Compatibility: muzzles and roller kits from the SigalSub Roller Speargun Line

Performance and Benefits

• Reduced friction: the internal roller allows the bands to slide smoothly, reducing energy loss compared to standard pulleys
• Greater power and speed: optimized energy transfer results in smoother, more powerful, and more accurate shots
• Corrosion resistance: robust construction suitable for prolonged use in marine environments
• Direct upgrade: ideal replacement part for upgrading or replacing existing pulleys on SigalSub roller muzzles
• Reliability: consistent performance under pressure, even during deep-water spearfishing sessions

Who They Are For

These pulleys are the reference replacement part for anyone who owns a SigalSub roller band speargun and wants to restore or improve the performance of their equipment. They are also the ideal choice for those who want to build or customize a roller muzzle to their specifications, pairing them with axle pins, stoppers, and kits available in the SigalSub Roller Speargun Line.

Black Zirconia Pulleys for Roller Spearguns

The pair of Black Zirconia pulleys for Roller Speargun spearguns is built to ensure high reliability for spearfishing and freediving. The outer structure in black Delrin is machined from solid stock, ensuring dimensional precision and the strength required for underwater use.

Technical features

• Material: high-strength black Delrin, unaffected by corrosion and marine temperatures
• Maximum working load: 169 kg, significantly higher than equivalent 316 stainless steel bearings
• Rotation speed limit: 9000 rpm, more than three times higher than traditional stainless steel bearings
• Outside diameter: 28 mm
• Groove diameter (trapezoidal section): 20 mm, compatible with bands up to 16 mm in diameter
• Inner shaft bore diameter: 6 mm, intentionally larger to transfer the load to the bearing
• Thickness: 15 mm

Construction details and functional advantages

The pulley is equipped with a calibrated cap that allows the bearing to be precisely centered on the centerline, optimizing smooth rotation and reducing premature wear. The central bore, enlarged relative to the axle, shifts the working load primarily onto the bearing, improving mechanical efficiency and protecting the pulley from excessive stress.

The trapezoidal groove is designed to accommodate spearfishing bands up to 16 mm in diameter, ensuring proper grip without compromising the smoothness and responsiveness of the pulley during tracking and shaft release.

In addition, Black Zirconia pulleys require minimal maintenance, as they are highly resistant to the corrosive agents typical of the marine environment and to temperature variations, ensuring long-lasting use over time.

LG Crystal Pulleys for Roller Speargun Systems in Freediving and Spearfishing

The LG Crystal Pulleys are components specifically designed for Roller Speargun systems used in Freediving and spearfishing gear. Manufactured in-house by LG, these pulleys feature bearings with glass balls, ensuring high precision and mechanical strength during operation.

Dimensions and technical specifications

• Thickness 13 mm: outer diameter 26.5 mm - internal groove 21.0 mm
• Thickness 14 mm: outer diameter 26.0 mm - internal groove 20.0 mm
• Thickness 16 mm: outer diameter 26.0 mm - internal groove 20.0 mm
• Thickness 18 mm: outer diameter 26.5 mm - internal groove 21.0 mm

Bearings and package contents

The pulleys are equipped with a pair of bearings featuring hard polymer races and glass balls, materials selected to improve rotational smoothness and long-term durability—key factors for maintaining efficiency and reliability during underwater maneuvers.

Available in the listed sizes, the package contains 2 pieces, ideal for replacing or maintaining roller systems used in freediving and spearfishing activities.

Pair of Invert 37 Pulleys for Roller Spearguns

This pair of Invert 37 pulleys is specifically designed for Roller Speargun spearguns used in spearfishing. The outer component is made from black Derlin, machined from solid stock to ensure strength and long service life.

The pulleys are suitable for supporting lines with a diameter up to 3.0 mm, ensuring reliable operation during freediving sessions.

Technical Features

• Outer diameter: 37 mm
• Groove diameter: 31 mm
• Inner diameter (shaft): 6 mm
• Thickness: 6 mm

The internal bushing is made using high-tech materials and processes, ensuring optimal smoothness and high mechanical resistance during underwater use. This provides smooth line movement and improved shot efficiency.

Pair of Inverter Pulleys for Roller Spearguns

This pair of Inverter pulleys is specifically designed for Roller Spearguns used in spearfishing and freediving.

The external pulleys are made from black Derlin, a polymer with high mechanical strength, machined from solid stock by turning to ensure dimensional precision and long-lasting durability.

Technical specifications

• Outer diameter: 30 mm
• Groove diameter: 26 mm
• Internal diameter (shaft): 6 mm
• Thickness: 11 mm

Precise turning ensures a uniform surface that allows smooth force transmission and greater efficiency in line tension.

Thanks to the materials used and precision machining, these pulleys help maintain optimal speargun trim, improving control and handling during tracking and release.

Pulley Inverter for Roller Spearguns with Internal Ceramic Bushing

This pair of Inverter pulleys is specifically designed for Roller Speargun spearfishing spearguns, ensuring smooth and reliable operation.

Each pulley is made from black Derlin machined from solid stock by turning, a material known for its high mechanical strength and light weight—essential features for efficiency and durability in underwater use.

The internal ceramic bushing ensures superior smoothness and longer service life, reducing friction and improving force transmission precision during loading and firing of the speargun.

Technical dimensions

• Outside diameter: 30 mm
• Groove diameter: 26 mm
• Internal diameter (shaft): 6 mm
• Thickness: 11 mm

These specifications ensure a precise setup and optimal compatibility with Roller Speargun mechanisms, allowing smooth action and better line management during freediving and spearfishing use.

LP Low Profile Pulleys for Spearfishing Spearguns

The low-profile LP Pulleys, designed by Contesub, are developed for spearfishers who require easy lateral tracking of the speargun. Their compact structure improves handling and ergonomics during dives.

Technical Features

• Equipped with a double internal bushing made with technologically advanced materials and precision manufacturing processes.
• Allow smooth band movement even under high loads, optimizing the efficiency of the roller system.
• Compatible with 6 mm axles.
• Suitable for bands with diameters up to 18 mm, with a preference for 16/17 mm bands.
• Thickness (pulley width) of 15 mm, balanced to minimize bulk without sacrificing mechanical strength.

Applications and Use

LP pulleys improve force transmission and band tension smoothness in spearfishing spearguns, making lateral tracking easier and contributing to more precise trim during underwater shooting.

Product Details

• Package containing 2 pulleys.
• Ideal for optimizing roller systems on spearguns with large-diameter bands.

Pair of Derlin Roller Speargun Pulleys for Freediving Spearfishing

This pair of Roller Speargun pulleys is made from black Derlin, a material chosen to provide greater mechanical strength and optimal performance under both static and dynamic load.

The pulley groove features a specially designed profile to eliminate the problem of band slippage during contraction, ensuring efficient power transmission and improved reliability during freediving or spearfishing.

Technical features

• Outer diameter: 28 mm
• Groove diameter: 19 mm
• Inner diameter (shaft): 6 mm
• Thickness: 16 mm

The combination of these parameters ensures proper hydrodynamics of the pulleys within the system, with extremely low resistance to movement. The use of Derlin also helps maintain lightness and rigidity, key elements for optimizing the tracking and accuracy of the speargun or sled.

Pair of Derlin Roller Speargun Pulleys with Ceramic Core

This pair of Roller Speargun pulleys is made from black Derlin, a strong and lightweight material, with a ceramic core to ensure greater strength under both static and dynamic load. The combination of these materials provides mechanical strength and reliability during use with pneumatic and spearfishing launch systems.

Technical Features

• Outer diameter: 28 mm
• Groove diameter: 19 mm
• Inner diameter (shaft): 6 mm
• Thickness: 16 mm

The pulley groove is specifically designed to eliminate band slippage during contraction, improving force transmission and maintaining efficiency during speargun release or freediving gear setup.

The precise fit between Derlin and ceramic ensures smooth movement and reduces wear, extending the component’s service life even under frequent use in aquatic environments.

Simple Pulleys for Roller Speargun - SIGAL

The SiGAL Simple Pulleys are replacement and rigging accessories specifically designed for building and maintaining Roller Speargun band spearguns for spearfishing. Sold as a pair, they are the ideal solution for anyone looking to build or upgrade their Roller Speargun system with reliable quality components at the right value for money.

The Roller Speargun System: Maximum Power Along the Entire Barrel

In traditional band spearguns, the bands work over only part of the Barrel length, limiting overall thrust. The Roller Speargun system, thanks to the pulleys, allows the bands to use the full Barrel stroke, increasing launch power by up to approximately 30% compared to a classic setup. This makes the Roller Speargun particularly suitable for hunting wary, large species such as dentex and pelagic fish.

Technical Specifications

• Pulley outer diameter: 26 mm
• Pulley groove diameter: 20 mm
• Pulley width: 16 mm
• Max groove width: 12 mm
• Pulley hole diameter: 6 mm
• Package: pair (2 pulleys)

Compatibility and Use

The SIGAL simple pulleys are compatible with standard 6 mm pulley axles commonly used in Roller Speargun builds. They integrate perfectly with SIGAL Roller Speargun muzzles for tube spearguns (26 mm and 25.4 mm diameter) and with other Roller Speargun muzzles on the market designed with 6 mm holes for axle housing. Suitable both for DIY Roller Speargun builds and for replacing worn pulleys on already rigged band spearguns.

Simple Pulleys vs Pulleys with Bearings

Compared to versions with glass ball bearings, simple pulleys offer an excellent balance between functionality and low cost, making them ideal for those entering the Roller Speargun world for the first time or for secondary-level setups. For optimal sliding performance and maximum long-term durability, SIGAL also offers a version with ball bearings, available separately.

Why Choose SIGALSUB

SIGAL is an Italian brand specialized in manufacturing high-performance spearfishing accessories and spearguns. The SIGAL Roller Speargun Line is among the most appreciated references among Italian freedivers for its build quality, attention to technical detail, and compatibility with the main band spearguns on the market.

D60 Delrin Pulley for Spearfishing

The D60 pulley is made from Delrin, a material known for its high mechanical strength and light weight, ideal for use in freediving spearfishing and underwater applications. The 60 mm outer diameter ensures proper alignment and force distribution during use.

Dual Pretensioning Function

The pulley allows dual pretensioning of the band system, combining a circular band with an additional pair connected via Dyneema positioned inside the pulley groove. This configuration improves force transmission efficiency and shot release accuracy.

Additional Technical Features

• Three pre-drilled holes for mounting the reel directly to the speargun, ensuring stability and ease of use
• Delrin construction, offering an optimal balance between rigidity and vibration damping capability