Masts
Radz Mast Shim
2025 Severne SDM Arc Carbon Windsurfing Mast
ARC
Perfect for recreational racing and freeride, the ARC is our strongest SDM mast with dual outer fiberglass layers. Built on the Apex mandrel for a lighter, stronger mast.
- VALUE + PERFORMANCE
- INTEGRATED FERRULE
- TORAY PRE-PREG CARBON
- +7 MEASURED OFFSET ACCURACY
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40% Carbon RDM Seasprite Windsurfing Mast
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STIX Boom Bra Board Protector with String
Goya Seventy 70% RDM Windsurfing Mast
Seventy 70% Carbon
RDM Reduced Diameter Mast
70% Carbon. Value that’s a cut above. This mast delivers outstanding performance and durability at an affordable price. Having three years of heritage, the Seventy has proven itself well worthy to be part of the Goya brand legacy.
Simply because 70% carbon is less than 90 % carbon doesn’t mean our more affordable masts come with any less quality control. We ensure that each Goya masts lives up to the very expectation we have established and delivered over the years.Available in 310, 340, 370, 400, 430, 460, 490 centimeters.
Peel Ply anti-slip boom area prevents sliding. Built with same length sections for easy handling.
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2025 Severne SDM Apex Carbon Windsurfing Mast 5.30 NOW £599
The APEX mast has an added fibreglass outer layer which makes it less susceptible to impact damage.
The Apex taper has smaller diameter mid-sections with increased wall thickness for increased reliability.
/ PERFORMANCE + RELIABILITY
/ INTEGRATED FERRULE
/ TORAY PRE-PREG CARBON
/ +7 MEASURED OFFSET ACCURACY
/ SLIPLOK PREVENTS BOOM FROM SLIDING
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Simmer SX10 100% Carbon RD Mast
SX10 RDM
100% PRE-PREG CARBON // PRO WAVE
The SX10 masts present the best performance in the range with the fastest possible reflex response possible, giving the sails turbo-charged acceleration, an extremely wide wind range, and lightweight handling.
SX10 stands for 100% carbon content. They are designed from a top grade and high tensile strength pre-preg carbon. This technology ensures optimum control of resin content and resin distribution throughout the laminate. The carbon layup features and inner layers of 45 degree carbon weave to control torsion and quick reflex response. The outer layer carbon has a 90 degree orientation for highest possible strength.
The SX10 mast feature a progressive constant curve which means that the bend curve is constant but the base is stiffer than the top. This provides optimal sail dynamics allowing the bottom of the sail to generate power, and the top of the rig to quickly release power.
The mast is the spine of the rig, so to get the best possible performance out of your rig, choose SX10.
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Simmer SX8 80% Carbon RD Mast
SX8 mast
80% PRE-PREG CARBON
The SX8 presents high carbon content for quick reflex respons that will lighten the feeling of any rig. Using the same high performance construction and bend curve as the SX10, the SX8 offers high-end performance with added durability therefore it is the best compromise between performance and durability.
SX8 stands for 80% carbon content. They are designed from a high grade pre-preg carbon. This technology ensures optimum control of resin content and resin distribution throughout the laminate. The carbon layup features a inner layers of 45 degree carbon weave to control torsion and quick reflex response. The outer layer carbon has a 90 degree orientation for highest possible strength.
The SX8 mast feature a progressive constant curve which means that the bend curve is constant but the base is stiffer than the top. This provides optimal sail dynamics allowing the bottom of the sail to generate power, and the top of the rig to quickly release power. The bend curve of the SDM and RDM’s are compatible with one another, but the RDM's are more durable, therefor more suitable for punishing wave conditions. SDM’s provide a faster reflex response, better stability and faster acceleration, therefor more suitable for flatwater sailing.
The Simmer wavesails are developed on the SX8 RDM and this is the mast that we recommend for this reason. The SX8 SDM is the recommended mast for VMax and 2XC and SC Slalom.
For perfectly tailored rig synergy and durability choose the SX8.
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Second Hand Powerex 60% Carbon 430 RDM Mast – Bottom Section only
Severne Gorilla RDM Mast
SEVERNE RDM GORILLA
EXTREME DURABILITY, ULTIMATE RELIABILITY 2 year, no questions asked, limited warranty. Adding 300 and 320 sizes for extreme reliability and performance masts in small wave sail sizes and Redback rigs. / 2 YEAR NO QUESTIONS ASKED LIMITED WARRANTY / +7 MEASURED OFFSET ACCURACY 300 / 320 / 340 / 370 / 400 / 430 / 460
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Severne Blue RDM Mast
RDM BLUE
The RDM Blue has an added fiberglass outer layer which makes it stronger and less susceptible to impact damage. Also offers wave mast durability for freeride and RDM Cam sails. (OverDrive, Turbo GT)
/ LIGHTWEIGHT (1.5KG FOR 400)
/ +7 MEASURED OFFSET ACCURACY
/ SLIPLOK PREVENTS BOOM FROM SLIDING
/ OVERSIZED EVA FERRULE PLUG TO CLEAN THE INSIDE OF THE TOP SECTION WHEN JOINING THE MAST.
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Severne Red RDM Mast
RDM RED
Utilising the highest quality T800 carbon from Toray, the RDM Red is one of the lightest masts available today whilst still being strong enough for wave use. Adds incredible performance to all wave and freestyle sails.
/ ULTRALIGHT (1.3KG FOR 400)
/ +7 MEASURED OFFSET ACCURACY
/ SLIPLOK PREVENTS BOOM FROM SLIDING
/ OVERSIZED EVA FERRULE PLUG TO CLEAN THE INSIDE OF THE TOP SECTION WHEN JOINING THE MAST.
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Goya Eighty Pro 80% RDM Windsurfing Mast
Eighty Pro
RDM Reduced Diameter Mast
80% Carbon – Strength, Lightness, and Feel Our strongest mast is now lighter than our previous 90% carbon model—and quicker, too. With an incredibly responsive feel, it has become the team’s go-to choice in overhead waves and for withstanding the rigors of travel. The perfect balance of durability, reflex, and weight.
Not All Masts Are Created Equal On paper, many masts might share similar specs—constant curve, matching IMCS, bend percentages, or comparable weights. But true performance goes far beyond the numbers. What sets Goya masts apart is consistency—from premium materials to precision engineering. We use only Toray prepreg carbon fiber, the global benchmark in composite performance. Unlike many prepregs made in-house without environmental controls, Toray’s prepreg is cured under precisely regulated temperature and pressure, with exact fiber-to-resin ratios. The result is Direct Drive—a fast, clean reflex that loads and releases with exceptional control. Because performance isn’t just about how a mast bends—it’s about how quickly it recovers, delivering what we call true IMCS.
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