Fulcrum Speed 40 DB Road WheelsetThis Road Wheelset from Fulcrum features brake-optimisation and rapid-rolling for enhanced durability and speed. Built with World Tour riders in mind and featuring lightweight carbon rims that benefit from an aerodynamic design for faster performance that has enhanced crosswind stability, this is a reliable, high-performance wheelset you can count on. Speedy-Rolling, Carbon-Rimmed Racing WheelsKitted out with a carbon hub on the front wheel and an aluminium model on the rear, a steady and smooth spin is assured as the USB ceramic bearings minimise friction with each rotation. The addition of 21 rounded, straight-pull spokes to each wheel reinforces and strengthens the structure while maintaining a dynamic performance, while the disc brake-compatibility keeps your speed in check with reliability and efficiency.Coming 2-Way Fit tubeless-ready for enhanced grip and protection with lower inflation tyres, this Speed 40 DB set is a terrific team for tearing across the tarmac on.Features:Rim Material: Full Carbon, "Twill" - carbon fibre finishingInner Rim Width: 19mmExternal Rim Width: 26.5mmRim Profile: 40mmHub Material: Front: Carbon with aluminium over-sized flange; Rear: Aluminium with aluminium over-sizedBearings: USB (Ultra Smooth Bearings) ceramic bearings; Adjustable Cup & Cones bearing systemUse: Road, GravelSpokes: 21x stainless-steel rounded, straight-pull spokes per wheel (Front: Two-to-one, 14 Left - 7 Right; Rear: Two-to-one, 7 Left - 14 Right)Spoke Material: Stainless SteelNipples Material: AluminiumTyre Compatibility: 2-Way fit (for clincher and tubeless)Tyre Size: 28"Brake Type: Disc brakeTubeless-Ready: YesWeight: 1470gWeight Limit: 109kgBuy Fulcrum Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Fulcrum Speed 40 DB Road WheelsetThis Road Wheelset from Fulcrum features brake-optimisation and rapid-rolling for enhanced durability and speed. Built with World Tour riders in mind and featuring lightweight carbon rims that benefit from an aerodynamic design for faster performance that has enhanced crosswind stability, this is a reliable, high-performance wheelset you can count on. Speedy-Rolling, Carbon-Rimmed Racing WheelsKitted out with a carbon hub on the front wheel and an aluminium model on the rear, a steady and smooth spin is assured as the USB ceramic bearings minimise friction with each rotation. The addition of 21 rounded, straight-pull spokes to each wheel reinforces and strengthens the structure while maintaining a dynamic performance, while the disc brake-compatibility keeps your speed in check with reliability and efficiency.Coming 2-Way Fit tubeless-ready for enhanced grip and protection with lower inflation tyres, this Speed 40 DB set is a terrific team for tearing across the tarmac on.Features:Rim Material: Full Carbon, "Twill" - carbon fibre finishingInner Rim Width: 19mmExternal Rim Width: 26.5mmRim Profile: 40mmHub Material: Front: Carbon with aluminium over-sized flange; Rear: Aluminium with aluminium over-sizedBearings: USB (Ultra Smooth Bearings) ceramic bearings; Adjustable Cup & Cones bearing systemUse: Road, GravelSpokes: 21x stainless-steel rounded, straight-pull spokes per wheel (Front: Two-to-one, 14 Left - 7 Right; Rear: Two-to-one, 7 Left - 14 Right)Spoke Material: Stainless SteelNipples Material: AluminiumTyre Compatibility: 2-Way fit (for clincher and tubeless)Tyre Size: 28"Brake Type: Disc brakeTubeless-Ready: YesWeight: 1470gWeight Limit: 109kgBuy Fulcrum Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
SPEED is synonymous with competition, and represents the ultimate in performance needed in a top of the range wheelset. The SPEED 40 DB was created for World Tour professionals, who use the tubular tyre version, and for all those who use these wheels for racing. SPEED 40 DB is a set of wheels for use with disc brakes that will simply leave you speechless, featuring a cutting-edge rim with a new shape, designed according to innovative technical concepts. At 26.5 mm, the wheel is wider, with an aerodynamic shape which includes a pronounced 8 mm profile and a twill weave carbon fibre texture, optimising the elastic responsiveness of the rim. Features: Tubeless Ready unising Fulcrum's 2-Way Fit system Tyre Size 28 Use Road / TT Weight 1470 g. Rim Material Carbon Rim Height Front and rear 40 mm Rim Width 26,5 mm Inner Rim Width 19 mm Tyre Width From 23 mm to 50 mm Braking System Disc Brake Spoke Material Stainless steel
Created for World Tour riders and other top-level road riders, these "Twill-weave" carbon fibre Speed 40 Disc wheels have a super-streamlined shape for ultra-efficient aerodynamic performance. With a 40mm-depth, each wheel achieves excellent crosswind stability, with the 19mm internal width rolling you along with poise and balance. Fast-Rolling, Carbon Fibre Racing Wheels Equipped with a carbon hub on the front wheel and an aluminium model on the rear, a reliable and smooth rotation is assured as the USB ceramic bearings eliminate friction with each rotation. Built with 21 rounded, straight pull spokes, the Fulcrum Speed 40 Disc Wheelset is strengthened while the disc brake compatibility keeps your speed under control with unrivalled reliability. Coming Two-Way Fit tubeless-ready for improved cornering grip and puncture protection with lower tyre pressures, these fast and efficient road bike wheels are the perfect pairing for going all out in your quest for silverware.
Equipped with a dashingly deep 40mm profile on the front and 55mm on the rear, both "Twill" carbon rims give a top-level performance when racing through blustery conditions on your rampant rides. Fast-Paced and Well-Balanced Road Wheelset The carbon construction and "Twill" finish on the rim guarantee unbeatable stiffness and quality handling as you attack the asphalt, while the stainless-steel spokes and durably-made hubs add extra strength to the complete wheel structure. The carbon front hub and aluminium rear model feature USB ceramic bearings for a buttery-smooth spin on every outing, with a Shimano 9/10/11-speed-compatible freehub on the rear for that extra bit of power and pace. The addition of rim brake compatibility to this super-fast wheelset gives excellent stopping abilities. This dynamically-deep set of top-level wheels is a must-have for the podium-chasing racer.
Fulcrum Speed 40C and 55C Clincher Road WheelsetStringently researched to help you achieve the speediest and most efficient run to the finish line, this formidable Fulcrum wheelset features different depths on each rim to keep you upright and unrivalled in every racing situation. Measuring a 40mm profile on the front and 55mm on the rear, each of the full carbon rims gives a professional-level feel when dealing with crosswinds, pace changes and fast, winding routes. Fast-Paced and Well-Balanced Road Wheelset The carbon-construction and "Twill" finish on the rim ensures superb stiffness and top-notch handling as you take it to the tarmac, with the overall wheel structure strengthened by the stainless-steel spokes and durably-made hubs. With USB ceramic bearings, the carbon front hub and aluminium rear hub ensure a super-smooth spin on every road-riding terrain, with the rear model also housing a Shimano 9/10/11-speed-compatible freehub for added thrust. The addition of rim brake compatibility to this lightning-quick wheelset gives excellent stopping power and control to every rapid road run. This dynamically-deep set of high-performance wheels is an essential choice for the fast and focused racer. Features: Rim Material: Full Carbon, "Twill" Carbon-Fibre finish Rim Depth: Front: 40mm; Rear: 55mm Brake Type: Rim Brake Spoke Type: Stainless-Steel, double-butted, aero, straightpull Spoke Count: Front: 18; Rear: 21, 2:1 lacing Hub Material: Front: Carbon with Aluminium flanges; Rear: Aluminium with Aluminium flanges Freehub: Shimano 9/10/11-speed Axle Compatibility: Front: QR, Rear: QR, AluminiumBuy Fulcrum Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Fulcrum SPEED 40C C17 Carbon Road WheelsetThis versatile Road Wheelset from Fulcrum benefits from a lightweight construction, reliable all-weather control and a 40mm rim profile for exceptional rolling performance. Perfect Tyre to Rim InterfaceThis wheelset is capable on any terrain you come across. Featuring a 17mm internal rim width, it is perfectly suited to both 25 and 28c tyres. It has been designed to create the perfect tyre to rim interface with these modern tyre sizes, placing it firmly in the modern competitive race wheel category.Stiff and ReactiveThe Longitudinal Twill carbon rim design has been implemented into the creation of these wheels. The fibres and the orientation in which they are structured pushes the boundaries of carbon fibre construction, resulting in a stiffer, more reactive rim that can also absorb higher levels of road vibration.Exceptional Braking PerformanceIn addition to the technology that Fulcrum has developed to make their wheel go amazingly fast. They have also applied the AC3 braking surface to this model, which makes slowing down noticeably more responsive and powerful. This advanced coating on the braking surface provides exceptional braking performance and as a bonus, it also reduces rim wear.Features:Material: Rim: Carbon Twill; Front Hub: Carbon, Aluminium flanges; Rear Hub: Aluminium; Spokes: Stainless Steel; Nipples: AluminiumDiscipline: Road, TriathlonTyre Type: ClincherRim Profile: 40mmRim External Width: 24.2mmRim Internal Width: 17mmBraking Surface: Twill, AC3 TreatmentAxle Compatibility: Quick ReleaseSpoke Type: Aero, Double ButtedSpoke Count: Front: 18; Rear: 21Bearings: USB Ceramic, Cup and ConeFreewheel: Plasma CoatedQuick Release: YesWeight Limit: 109kgWeight: 1.42kgTechnologies:AC3 - All Conditions Carbon Control: AC3 enables surprising braking performance, which is very noticeable in difficult weather conditions. Rather than using the traditional machined brake track approach, Fulcrum uses micro laser incisions on the brake track surface to remove resins and create a smooth surface. Lab tests have shown that this process improves braking power by an improvement of 6%. However, in the wet this performance increase jumps to 43%. Bringing braking in the wet closer to the performance experienced when riding in dry conditions.USB (Ceramic Ultra Smooth Bearings): Using high-end ceramic balls, which perform continually thanks to the absence of lubricating grease and the precise machining of the cup and cone technology, the friction is reduced drastically and in turn increases the smoothness of triathlon and road bike wheels by as much as 9 times compared to standard bearings.Rim Dynamic Balance: Simple and Elegant, the weight of the rim gasket is balanced on the opposite side with an item of similar weight.2:1 Two-To-One: Every push on the pedals from the rider will force most of that energy on the drive side of the rear wheel. To combat this loss of rim tension and power transfer, Fulcrum has solved this cycling problem with their 2:1 spoke ratio pattern by doubling the spoke count in crucial zones on the wheel.Direction Rim-Spoke Coupling: An exclusive rim/spoke mounting system. It allows the rim, spokes, hub and nipples to align perfectly, guaranteeing the precise spoke tension in all areas around the wheel.Anti-Rotation System: This system locks the spoke in place once the correct tension is achieved. Engineers at Fulcrum have designed this system to ensure the spokes never lose their initial tension and to remain in the position that has been proven to provide the perfect aerodynamic properties.Unrolled Rim Bed: Featuring no holes on the central section of the rim means that the rim is uniform at every point, free from critical areas subject to stress. The advantages are immediately clear: less weight, longer lasting rims, greater resistance to fatigue, the possibility of giving the spokes more tension and more stiffness which, in terms of performance, means improved responsiveness and acceleration.Plasma Freehub: The freehub body has been Plasma treated, which makes the aluminium especially hard and resistant to surface abrasion and wear. This means the thickness of materials used can be to be reduced to a minimum, achieving a lighter weight, while maintaining lifespan and reliability.Buy Fulcrum Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Representing the best in the business, the SPEED 40C C17 Carbon Road Wheelset delivers high-end performance and incredible versatility. Describing their creation as the pinnacle of wheel design, Fulcrum have used a solid and incredibly responsive structure with rear oversized flanges and a two-to-one spoke pattern. Capable of tackling any conditions, acceleration and braking are consistently at the top of their game come rain or shine. Perfect Tyre to Rim Interface This wheelset is capable on any terrain you come across. Featuring a 17mm internal rim width, it is perfectly suited to both 25 and 28c tyres. It has been designed to create the perfect tyre to rim interface with these modern tyre sizes, placing it firmly in the modern competitive race wheel category. Stiff and Reactive The Longitudinal Twill carbon rim design has been implemented into the creation of these wheels. The fibres and the orientation in which they are structured pushes the boundaries of carbon fibre construction, resulting in a stiffer, more reactive rim that can also absorb higher levels of road vibration. Exceptional Braking Performance In addition to the technology that Fulcrum has developed to make their wheel go amazingly fast. They have also applied the AC3 braking surface to this model, which makes slowing down noticeably more responsive and powerful. This advanced coating on the braking surface provides exceptional braking performance and as a bonus, it also reduces rim wear. Added features: Axle - Front Axle Compatibility: QR Rear Axle Compatibility: QR Aluminium Bearings - USB ceramic bearings. Adjustable Cup & Cones bearing system Rim Material - Full carbon, "Twill" -carbon fibre finishing Tyres - Clincher Width: From 25mm to 50mm Size: 28" Weight - 1420g Technologies: AC3 - All Conditions Carbon Control: AC3 enables surprising braking performance, which is very noticeable in difficult weather conditions. Rather than using the traditional machined brake track approach, Fulcrum uses micro laser incisions on the brake track surface to remove resins and create a smooth surface. Lab tests have shown that this process improves braking power by an improvement of 6%. However, in the wet this performance increase jumps to 43%. Bringing braking in the wet closer to the performance experienced when riding in dry conditions. USB (Ceramic Ultra Smooth Bearings): Using high-end ceramic balls, which perform continually thanks to the absence of lubricating grease and the precise machining of the cup and cone technology, the friction is reduced drastically and in turn increases the smoothness of triathlon and road bike wheels by as much as 9 times compared to standard bearings. Rim Dynamic Balance: Simple and Elegant, the weight of the rim gasket is balanced on the opposite side with an item of similar weight. 2:1 Two-To-One: Every push on the pedals from the rider will force most of that energy on the drive side of the rear wheel. To combat this loss of rim tension and power transfer, Fulcrum has solved this cycling problem with their 2:1 spoke ratio pattern by doubling the spoke count in crucial zones on the wheel. Direction Rim-Spoke Coupling: An exclusive rim/spoke mounting system. It allows the rim, spokes, hub and nipples to align perfectly, guaranteeing the precise spoke tension in all areas around the wheel. Anti-Rotation System: This system locks the spoke in place once the correct tension is achieved. Engineers at Fulcrum have designed this system to ensure the spokes never lose their initial tension and to remain in the position that has been proven to provide the perfect aerodynamic properties. Unrolled Rim Bed: Featuring no holes on the central section of the rim means that the rim is uniform at every point, free from critical areas subject to stress. The advantages are immediately clear: less weight, longer lasting rims, greater resistance to fatigue, the possibility of giving the spokes more tension and more stiffness which, in terms of performance, means improved responsiveness and acceleration. Plasma Freehub: The freehub body has been Plasma treated, which makes the aluminium especially hard and resistant to surface abrasion and wear. This means the thickness of materials used can be to be reduced to a minimum, achieving a lighter weight, while maintaining lifespan and reliability.
Fulcrum Speed 55 Comptz Disc Carbon WheelsetFeaturing two high-quality full carbon rims with a "Twill" carbon fibre finish and a 55mm rim height, this road bike wheelset is the choice of Elia Viviani of Team Cofidis. Ready for the demands of modern road cycling, each rim's carbon build also delivers increased strength, improved rolling resistance and an overall lower weight on your ride, so you can benefit from easier climbing and faster sprinting when on the flat.Road Bike Wheelset with CULT BearingsFulcrum has kitted out this wheelset with its renowned CULT bearings, which allow for further weight savings and achieve unequalled levels of rolling resistance by up to nine times compared to traditional solutions, with a saving of up to 3.5 watts per pedal stroke. Along with the considerable improvement in terms of mechanical performance, this model is also equipped with an updated carbon front hub and an aluminium rear hub, both with an oversized aluminium flange. This means that riders will enjoy smoother, faster and more dependable rolling performance, wherever their ride takes them.2-Way Fit TechnologyFeaturing many of Fulcrum's finest technologies, this version is well-equipped for every mile of road thanks to 2-Way Fit technology. This technology allows riders to choose whether they run the wheelset as tubeless or as a standard clincher. By running tubeless, riders will enjoy performance advantages such as lower rolling resistance, greater stability and fewer chances of punctures or flats. This flexibility also means that you can personally test which of the solutions works best for you, as some riders prefer to use the clincher set-up for training and a tubeless setup for racing. One final highlight is the Fulcrum Speed 55 Comptz Disc Brake Carbon Wheelset has a 19mm internal rim width, which gives you additional freedom in terms of the tyres that can be fitted.Features: Material: Full Carbon with "Twill" Carbon Fibre finish Use: Road Axle Size: Front: 12x100mm; Rear: 12x142mm Rim Width: 26.5mm Inner Rim Width (Channel): 19mm Rim Profile Height: High Rim Height: Front and Rear: 55mm Tyre Width: From 23mm to 50mm Braking System: Disc brake Braking Surface/Option: AFS Spokes Material: Stainless Steel, double-butted Spokes Profile: Rounded Front Wheel Spokes: 21, Two-to-one (14 left - 7 right) Rear Wheel Spokes: 21, Two-to-one (7 left - 14 right) Nipples: Aluminium Front Hub: Carbon, Oversized Aluminium flange Rear Hub: Aluminum, Oversized Aluminium flange Bearings: Ceramic CULT bearings, cup & cone system, adjustable Freehub: Multiple options available to select Others: Plasma treated freewheel. Aluminium Axle Tyre Type: 2-Way Fit (for clincher and tubeless) Tyre Size: 28" Weight Limit: 120kg (rider,bike, equipment and luggage) ASTM Category: 2 Single or Pair: Pair Weight: 1570gManufacturer's Part Number: FULCWF407BAP1A110 Black 700c Shimano FULCWF407BAP5A110 Black 700c SRAM XDBuy Fulcrum Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Fulcrum Speed 55 Comptz Disc Carbon WheelsetFeaturing two high-quality full carbon rims with a "Twill" carbon fibre finish and a 55mm rim height, this road bike wheelset is the choice of Elia Viviani of Team Cofidis. Ready for the demands of modern road cycling, each rim's carbon build also delivers increased strength, improved rolling resistance and an overall lower weight on your ride, so you can benefit from easier climbing and faster sprinting when on the flat.Road Bike Wheelset with CULT BearingsFulcrum has kitted out this wheelset with its renowned CULT bearings, which allow for further weight savings and achieve unequalled levels of rolling resistance by up to nine times compared to traditional solutions, with a saving of up to 3.5 watts per pedal stroke. Along with the considerable improvement in terms of mechanical performance, this model is also equipped with an updated carbon front hub and an aluminium rear hub, both with an oversized aluminium flange. This means that riders will enjoy smoother, faster and more dependable rolling performance, wherever their ride takes them.2-Way Fit TechnologyFeaturing many of Fulcrum's finest technologies, this version is well-equipped for every mile of road thanks to 2-Way Fit technology. This technology allows riders to choose whether they run the wheelset as tubeless or as a standard clincher. By running tubeless, riders will enjoy performance advantages such as lower rolling resistance, greater stability and fewer chances of punctures or flats. This flexibility also means that you can personally test which of the solutions works best for you, as some riders prefer to use the clincher set-up for training and a tubeless setup for racing. One final highlight is the Fulcrum Speed 55 Comptz Disc Brake Carbon Wheelset has a 19mm internal rim width, which gives you additional freedom in terms of the tyres that can be fitted.Features: Material: Full Carbon with "Twill" Carbon Fibre finish Use: Road Axle Size: Front: 12x100mm; Rear: 12x142mm Rim Width: 26.5mm Inner Rim Width (Channel): 19mm Rim Profile Height: High Rim Height: Front and Rear: 55mm Tyre Width: From 23mm to 50mm Braking System: Disc brake Braking Surface/Option: AFS Spokes Material: Stainless Steel, double-butted Spokes Profile: Rounded Front Wheel Spokes: 21, Two-to-one (14 left - 7 right) Rear Wheel Spokes: 21, Two-to-one (7 left - 14 right) Nipples: Aluminium Front Hub: Carbon, Oversized Aluminium flange Rear Hub: Aluminum, Oversized Aluminium flange Bearings: Ceramic CULT bearings, cup & cone system, adjustable Freehub: Multiple options available to select Others: Plasma treated freewheel. Aluminium Axle Tyre Type: 2-Way Fit (for clincher and tubeless) Tyre Size: 28" Weight Limit: 120kg (rider,bike, equipment and luggage) ASTM Category: 2 Single or Pair: Pair Weight: 1570gManufacturer's Part Number: FULCWF407BAP1A110 Black 700c Shimano FULCWF407BAP5A110 Black 700c SRAM XDBuy Fulcrum Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Fulcrum Speed 55 Disc Road WheelsetFeaturing two high-quality full carbon rims, this road bike wheelset ensures maximum stiffness and strength without any weight penalty. Thanks to its carbon rim construction and carbon fibre finishing, this model makes climbing easier and when it's time to descend, you won't have to worry about any excess grams holding you back. Fulcrum has also equipped this version with many of its finest technologies, including 2-Way Fit so it can be used with or without tubeless tyres. With the ability to run lower tyre pressures, riders will enjoy performance benefits such as greater stability, increased comfort and fewer chances of flats or punctures as they race for the podium.Wind Tunnel Tested Carbon Fibre WheelsetThe manufacturing process of the carbon fibre rim without holes in the internal channel - a patented construction technology - also allows a stronger and sturdier construction capable of withstanding even the most extreme racing conditions. The rim with a 19mm inner width perfectly matches recent trends of using increasingly wider tyres - a choice that further improves the aerodynamic performance of the wheel/tyre system. This data has been validated by intensive wind tunnel studies and trials where new projects are tested on a regular basis. Speed 55 DB proved to be the best option in terms of aerodynamic penetration indexes in the Fulcrum range and is derived from the profiles developed for the tubular version used by World Tour teams.Lightweight and Aerodynamic PerformanceThe Speed range not only responds in terms of aerodynamic performance. Optimising performance also requires the wheels to be light and run smooth. The Fulcrum Speed 55 Disc Road Wheelset weighs in at only 1580g and comes complete with ceramic USB bearings, so riders can enjoy smooth and dependable rolling performance as they race towards victory. Features: Rim Material: Full Carbon Rim Finish: Carbon Fibre finishing Axle Compatibility: Front: 12-100mm; Rear: 12-142mm Use: Road, Triathlon Rim Profile Height: Deep section Rim Height: Front and Rear: 55mm Rim Width: 26.5mm Inner Rim Width (Channel): 19mm Tyre Type: 2-Way Fit (for clincher and tubeless) Tyre Size: 700c Tyre Width: From 23mm to 50mm Braking System: Disc brake Braking Surface: AFS Spoke Count: Front: 21, Two-to-one (14 left - 7 right); Rear: 21, Two-to-one (7 left - 14 right) Spokes Material: Stainless Steel, double-butted Spokes Profile: Rounded Nipples: Aluminium Front Hub: Carbon, Oversized Aluminium flange Rear Hub: Aluminium, Oversized Aluminium flange Bearings: USB ceramic bearings. Adjustable Cup & Cones system Freehub Type: Shimano ASTM Category: 2 Others: Plasma treated HG freewheel. Aluminium Axle Weight Limit: 120kg (rider,bike, equipment and luggage) Single or Pair: Pair Weight: 1580g Manufacturer's Part Number: FULC0146726 Black 700c ShimanoBuy Fulcrum Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Fulcrum SPEED 55C C17 Carbon Road WheelsetThe Fulcrum SPEED 55C features a 55mm deep profile, which not only provides exceptional aerodynamic performance but also offers optimized rolling efficiency and race ready stability. Although the deep section rim makes these wheels ideal for flatter terrain, the 1.47kg weight makes them extremely capable for courses that involve a lot of climbing, which benefit massively from lighter aerodynamic wheels.Optimal Tyre to Rim InterfaceThis wheelset features a 17mm internal rim width, making it perfectly suited to both 25 and 28c width tyres. It has been designed to create the optimal tyre to rim interface with these modern tyre sizes, placing it firmly in the modern competitive race wheel category. This wider rim/tyre setup grants additional rolling efficiency, traction, stability and comfort no matter what event or situation you end up being involved in.Unique Carbon Fibre ConstructionThese wheels feature the Longitudinal Twill carbon rim design, which is unique to Fulcrum. The fibres and the orientation in which they are structured pushes the boundaries of carbon fibre construction, resulting in a stiffer, more reactive rim that can also absorb higher levels of road vibration with minimal flex.Optimised Braking PerformanceIn addition to the technology that give the SPEED 55C exceptional stability, aerodynamic finesse and high-end race performance, it also features the AC3 braking surface. This braking surface makes slowing down noticeably more responsive and powerful, which overall makes overall race times faster as you can brake later into corners with precise accuracy. This advanced coating on the braking surface provides optimised braking performance and as a bonus, it also reduces rim wear.Features: Material: Rim: Carbon; Front Hub: Carbon, Aluminium flanges; Rear Hub: Aluminium; Spokes: Stainless Steel; Nipples: Aluminium Discipline: Road, Triathlon Tyre Type: Clincher Rim Profile: 55mm Rim External Width: 24.2mm Rim Internal Width: 17mm Braking Surface: Twill, AC3 Treatment Axle Compatibility: Quick Release Spoke Type: Aero, double butted, straight pull Spoke Count: Front: 18; Rear: 21 Bearings: USB Ceramic, Cup and Cone Freewheel: Plasma Coated Weight: 1.47kgTechnologies: AC3 - All Conditions Carbon Control: AC3 enables surprising braking performance, which is very noticeable in difficult weather conditions. Rather than using the traditional machined brake track approach, Fulcrum uses micro laser incisions on the brake track surface to remove resins and create a smooth surface. Lab tests have shown that this process improves braking power by an improvement of 6%. However, in the wet this performance increase jumps to 43%. Bringing braking in the wet closer to the performance experienced when riding in dry conditions. USB (Ceramic Ultra Smooth Bearings): Using high-end ceramic balls, which perform continually thanks to the absence of lubricating grease and the precise machining of the cup and cone technology, the friction is reduced drastically and in turn increases the smoothness of triathlon and road bike wheels by as much as 9 times compared to standard bearings. Rim Dynamic Balance: Simple and Elegant, the weight of the rim gasket is balanced on the opposite side with an item of similar weight. 2:1 Two-To-One: Every push on the pedals from the rider will force most of that energy on the drive side of the rear wheel. To combat this loss of rim tension and power transfer, Fulcrum has solved this cycling problem with their 2:1 spoke ratio pattern by doubling the spoke count in crucial zones on the wheel. Directionated Rim-Spoke Coupling: An exclusive rim/spoke mounting system. It allows the rim, spokes, hub and nipples to align perfectly, guaranteeing the precise spoke tension in all areas around the wheel. Anti-Rotation System: This system locks the spoke in place once the correct tension is achieved. Engineers at Fulcrum have designed this system to ensure the spokes never lose their initial tension and to remain in the position that has been proven to provide the perfect aerodynamic properties. Unrilled Rim Bed: Featuring no holes on the central section of the rim means that the rim is uniform at every point, free from critical areas subject to stress. The advantages are immediately clear: less weight, longer lasting rims, greater resistance to fatigue, the possibility of giving the spokes more tension and more stiffness which, in terms of performance, means improved responsiveness and acceleration. Plasma Freehub: The freehub body has been Plasma treated, which makes the aluminium especially hard and resistant to surface abrasion and wear. This means the thickness of materials used can be to be reduced to a minimum, achieving a lighter weight, while maintaining lifespan and reliability.Buy Fulcrum Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.