Vision TC 55 is the newest range of light and versatile carbon racing wheels, with a 55mm rim depth in disc brake format. They have been developed using extensive wind tunnel testing and on the road with professional cyclists of our sponsored teams, offering a great balance of performance and light weight at a competitive price.Full Carbon 55mm depth rim,Tubeless ready - clincher,Centerlock rotor mount,6 sealed cartridge bearings (2F + 4R),J-Bend spokes 24F / 24R,TA-12 and X-12,Artisan built, entirely by hand,Includes rim tape (clincher), spoke protector.FREEHUBAlloy freehub,Shimano 10-11sp,SRAM XDR.ADAPTERSFront - QR and TA-15 (available separately),Rear - QR (available separately).
DVO Suspension Diamond D1 Boost Fork 27.5" 37mm OffsetDesigned with superb suspension technology and top-notch materials, this excellent enduro fork by DVO is the perfect companion for daring downhill endeavours. Made with an aluminium chassis and magnesium-cast lowers, it takes on every trail with 170mm of travel and an assortment of adjustments to keep you composed and in control from top to bottom. Boost-Sized, Downhill MTB ForkCombining six low-speed and 24 high-speed clicks of compression adjustment, the Diamond D1 lets you fine-tune every ride to meet the demands of the route ahead. An OTT (Off The Top) adjustment system on the negative air spring enhances control and composure over smaller bumps while the closed cartridge bladder damper and shim stack-controlled damper absorb bigger shocks. A Boost-sized thru axle gives rigidity and responsiveness when your run gets more rugged, making for a performance-focused fork for the thrill-seeking rider. Features: Steerer Material: Aluminium Crown Material: Forged Aluminium Stanchion Material: Aluminium, 35mm Lower Material: Magnesium casting Suspension: Air, OTT adjustment (negative spring preload) Damping: Closed cartridge bladder system Steerer Diameter: 1 1/8-1.5", tapered Adjustments: High-speed and low-speed compression, rebound, OTT, air pressure Axle to Crown: 565mm Travel: 170mm Axle: 15x110mm Boost thru axle (bolted) Offset: 37mm Buy DVO Suspension Frames & Forks from Chain Reaction Cycles, the World's Largest Online Bike Store.
DVO Suspension Diamond D1 Boost Fork 27.5" 37mm OffsetDesigned with superb suspension technology and top-notch materials, this excellent enduro fork by DVO is the perfect companion for daring downhill endeavours. Made with an aluminium chassis and magnesium-cast lowers, it takes on every trail with 170mm of travel and an assortment of adjustments to keep you composed and in control from top to bottom. Boost-Sized, Downhill MTB ForkCombining six low-speed and 24 high-speed clicks of compression adjustment, the Diamond D1 lets you fine-tune every ride to meet the demands of the route ahead. An OTT (Off The Top) adjustment system on the negative air spring enhances control and composure over smaller bumps while the closed cartridge bladder damper and shim stack-controlled damper absorb bigger shocks. A Boost-sized thru axle gives rigidity and responsiveness when your run gets more rugged, making for a performance-focused fork for the thrill-seeking rider. Features: Steerer Material: Aluminium Crown Material: Forged Aluminium Stanchion Material: Aluminium, 35mm Lower Material: Magnesium casting Suspension: Air, OTT adjustment (negative spring preload) Damping: Closed cartridge bladder system Steerer Diameter: 1 1/8-1.5", tapered Adjustments: High-speed and low-speed compression, rebound, OTT, air pressure Axle to Crown: 565mm Travel: 170mm Axle: 15x110mm Boost thru axle (bolted) Offset: 37mm Buy DVO Suspension Frames & Forks from Chain Reaction Cycles, the World's Largest Online Bike Store.
During the development of the Tripster AT all terrain frame we also worked closely with the late Mike Hall in the design process and gained from Mike s knowledge and love of long distance, multi-terrain riding. The final production model features a number of enhancements thanks to Mike s input and you can see this referenced on the frame graphics. Under Additional Info. tab is an email form Mike showing his input on the graphical styling of the Tripster AT.Tough yet lightweight 7046 series Kinesium tube set with tapered machined headtube31.8mm seat tube for 27.2mm seat post (will add a bit of compliancy)All new colour matched Columbus Futura Carbon fork with 12mm thru axleInboard Shimano Flat-mount disc mounts on frame and frame and fork (maximum 160mm rotors)Seat stay mounts for mudguards and pannier racks. Bridges on chain stay and seat stay for fender mounting, runs 40mm tyres with full mudguards for clean winter riding!Beyond gravel capability with 700c x 45mm or 650b x 52mm tyre clearance3 x bottle boss mounts for extra carrying capacity or storing a tool kegOptimum hydration system multi position down-tube bottle cage mounting to allow for full bottle carry capacity even with a frame bagGW Switch Lever Thru-axles includedInternal cable routing for mechanical and electronic gear systemsBSA threaded BB for real world low maintenance riding22mm long flat mount disc brake bolts required for the frameThe Kinesis Tripster AT All Terrain bike frame boasts cutting edge adventure bike features and versatility, allowing it to be built to excel across a variety of uses. Use it as a commuter bike, gravel bike, go bike packing, touring and ride bridleways on it, ride across continents on it. The new Tripster AT bike frameset will take all of this in its stride and more.With through axles front and rear, clearance for 700c x 45mm or 650B x 52mm tyres and with cable routing for any kind of group set, this bike can be a two wheeled Swiss Army Knife! Add in multiple bottle cage mounting, rack and mudguard mounts and the dependability of a British Standard bottom bracket with Kinesis UK proven geometry and you have a recipe for adventure.New to the Tripster AT is the Columbus Futura Cross fork. Columbus have been making headway into the premium carbon fork market recently and the newly launched Futura Cross fork is the perfect partner to our Tripster AT frame. The Columbus Futura fork is fitted with a flip-chip to allow adjustment of the rake of the fork between 47mm and 52mm. Where you place the chip will depend on how you like your Tripster to handle. As a starting point we recommend that if you have a smaller frame and/or are loaded for bike packing, then you will benefit from a longer wheelbase, and so place the chip in the 52mm position. The Tripster AT All Terrain bike is such a capable and versatile bike that it might well be the one you ride the most of all.Size Chart:
During the development of the Tripster AT all terrain frame we also worked closely with the late Mike Hall in the design process and gained from Mike s knowledge and love of long distance, multi-terrain riding. The final production model features a number of enhancements thanks to Mike s input and you can see this referenced on the frame graphics. Under Additional Info. tab is an email form Mike showing his input on the graphical styling of the Tripster AT.Tough yet lightweight 7046 series Kinesium tube set with tapered machined headtube31.8mm seat tube for 27.2mm seat post (will add a bit of compliancy)All new colour matched Columbus Futura Carbon fork with 12mm thru axleInboard Shimano Flat-mount disc mounts on frame and frame and fork (maximum 160mm rotors)Seat stay mounts for mudguards and pannier racks. Bridges on chain stay and seat stay for fender mounting, runs 40mm tyres with full mudguards for clean winter riding!Beyond gravel capability with 700c x 45mm or 650b x 52mm tyre clearance3 x bottle boss mounts for extra carrying capacity or storing a tool kegOptimum hydration system multi position down-tube bottle cage mounting to allow for full bottle carry capacity even with a frame bagGW Switch Lever Thru-axles includedInternal cable routing for mechanical and electronic gear systemsBSA threaded BB for real world low maintenance riding22mm long flat mount disc brake bolts required for the frameThe Kinesis Tripster AT All Terrain bike frame boasts cutting edge adventure bike features and versatility, allowing it to be built to excel across a variety of uses. Use it as a commuter bike, gravel bike, go bike packing, touring and ride bridleways on it, ride across continents on it. The new Tripster AT bike frameset will take all of this in its stride and more.With through axles front and rear, clearance for 700c x 45mm or 650B x 52mm tyres and with cable routing for any kind of group set, this bike can be a two wheeled Swiss Army Knife! Add in multiple bottle cage mounting, rack and mudguard mounts and the dependability of a British Standard bottom bracket with Kinesis UK proven geometry and you have a recipe for adventure.New to the Tripster AT is the Columbus Futura Cross fork. Columbus have been making headway into the premium carbon fork market recently and the newly launched Futura Cross fork is the perfect partner to our Tripster AT frame. The Columbus Futura fork is fitted with a flip-chip to allow adjustment of the rake of the fork between 47mm and 52mm. Where you place the chip will depend on how you like your Tripster to handle. As a starting point we recommend that if you have a smaller frame and/or are loaded for bike packing, then you will benefit from a longer wheelbase, and so place the chip in the 52mm position. The Tripster AT All Terrain bike is such a capable and versatile bike that it might well be the one you ride the most of all.Size Chart:
During the development of the Tripster AT all terrain frame we also worked closely with the late Mike Hall in the design process and gained from Mike s knowledge and love of long distance, multi-terrain riding. The final production model features a number of enhancements thanks to Mike s input and you can see this referenced on the frame graphics. Under Additional Info. tab is an email form Mike showing his input on the graphical styling of the Tripster AT.Tough yet lightweight 7046 series Kinesium tube set with tapered machined headtube31.8mm seat tube for 27.2mm seat post (will add a bit of compliancy)All new colour matched Columbus Futura Carbon fork with 12mm thru axleInboard Shimano Flat-mount disc mounts on frame and frame and fork (maximum 160mm rotors)Seat stay mounts for mudguards and pannier racks. Bridges on chain stay and seat stay for fender mounting, runs 40mm tyres with full mudguards for clean winter riding!Beyond gravel capability with 700c x 45mm or 650b x 52mm tyre clearance3 x bottle boss mounts for extra carrying capacity or storing a tool kegOptimum hydration system multi position down-tube bottle cage mounting to allow for full bottle carry capacity even with a frame bagGW Switch Lever Thru-axles includedInternal cable routing for mechanical and electronic gear systemsBSA threaded BB for real world low maintenance riding22mm long flat mount disc brake bolts required for the frameThe Kinesis Tripster AT All Terrain bike frame boasts cutting edge adventure bike features and versatility, allowing it to be built to excel across a variety of uses. Use it as a commuter bike, gravel bike, go bike packing, touring and ride bridleways on it, ride across continents on it. The new Tripster AT bike frameset will take all of this in its stride and more.With through axles front and rear, clearance for 700c x 45mm or 650B x 52mm tyres and with cable routing for any kind of group set, this bike can be a two wheeled Swiss Army Knife! Add in multiple bottle cage mounting, rack and mudguard mounts and the dependability of a British Standard bottom bracket with Kinesis UK proven geometry and you have a recipe for adventure.New to the Tripster AT is the Columbus Futura Cross fork. Columbus have been making headway into the premium carbon fork market recently and the newly launched Futura Cross fork is the perfect partner to our Tripster AT frame. The Columbus Futura fork is fitted with a flip-chip to allow adjustment of the rake of the fork between 47mm and 52mm. Where you place the chip will depend on how you like your Tripster to handle. As a starting point we recommend that if you have a smaller frame and/or are loaded for bike packing, then you will benefit from a longer wheelbase, and so place the chip in the 52mm position. The Tripster AT All Terrain bike is such a capable and versatile bike that it might well be the one you ride the most of all.Size Chart:
During the development of the Tripster AT all terrain frame we also worked closely with the late Mike Hall in the design process and gained from Mike s knowledge and love of long distance, multi-terrain riding. The final production model features a number of enhancements thanks to Mike s input and you can see this referenced on the frame graphics. Under Additional Info. tab is an email form Mike showing his input on the graphical styling of the Tripster AT.Tough yet lightweight 7046 series Kinesium tube set with tapered machined headtube31.8mm seat tube for 27.2mm seat post (will add a bit of compliancy)All new colour matched Columbus Futura Carbon fork with 12mm thru axleInboard Shimano Flat-mount disc mounts on frame and frame and fork (maximum 160mm rotors)Seat stay mounts for mudguards and pannier racks. Bridges on chain stay and seat stay for fender mounting, runs 40mm tyres with full mudguards for clean winter riding!Beyond gravel capability with 700c x 45mm or 650b x 52mm tyre clearance3 x bottle boss mounts for extra carrying capacity or storing a tool kegOptimum hydration system multi position down-tube bottle cage mounting to allow for full bottle carry capacity even with a frame bagGW Switch Lever Thru-axles includedInternal cable routing for mechanical and electronic gear systemsBSA threaded BB for real world low maintenance riding22mm long flat mount disc brake bolts required for the frameThe Kinesis Tripster AT All Terrain bike frame boasts cutting edge adventure bike features and versatility, allowing it to be built to excel across a variety of uses. Use it as a commuter bike, gravel bike, go bike packing, touring and ride bridleways on it, ride across continents on it. The new Tripster AT bike frameset will take all of this in its stride and more.With through axles front and rear, clearance for 700c x 45mm or 650B x 52mm tyres and with cable routing for any kind of group set, this bike can be a two wheeled Swiss Army Knife! Add in multiple bottle cage mounting, rack and mudguard mounts and the dependability of a British Standard bottom bracket with Kinesis UK proven geometry and you have a recipe for adventure.New to the Tripster AT is the Columbus Futura Cross fork. Columbus have been making headway into the premium carbon fork market recently and the newly launched Futura Cross fork is the perfect partner to our Tripster AT frame. The Columbus Futura fork is fitted with a flip-chip to allow adjustment of the rake of the fork between 47mm and 52mm. Where you place the chip will depend on how you like your Tripster to handle. As a starting point we recommend that if you have a smaller frame and/or are loaded for bike packing, then you will benefit from a longer wheelbase, and so place the chip in the 52mm position. The Tripster AT All Terrain bike is such a capable and versatile bike that it might well be the one you ride the most of all.Size Chart:
During the development of the Tripster AT all terrain frame we also worked closely with the late Mike Hall in the design process and gained from Mike s knowledge and love of long distance, multi-terrain riding. The final production model features a number of enhancements thanks to Mike s input and you can see this referenced on the frame graphics. Under Additional Info. tab is an email form Mike showing his input on the graphical styling of the Tripster AT.Tough yet lightweight 7046 series Kinesium tube set with tapered machined headtube31.8mm seat tube for 27.2mm seat post (will add a bit of compliancy)All new colour matched Columbus Futura Carbon fork with 12mm thru axleInboard Shimano Flat-mount disc mounts on frame and frame and fork (maximum 160mm rotors)Seat stay mounts for mudguards and pannier racks. Bridges on chain stay and seat stay for fender mounting, runs 40mm tyres with full mudguards for clean winter riding!Beyond gravel capability with 700c x 45mm or 650b x 52mm tyre clearance3 x bottle boss mounts for extra carrying capacity or storing a tool kegOptimum hydration system multi position down-tube bottle cage mounting to allow for full bottle carry capacity even with a frame bagGW Switch Lever Thru-axles includedInternal cable routing for mechanical and electronic gear systemsBSA threaded BB for real world low maintenance riding22mm long flat mount disc brake bolts required for the frameThe Kinesis Tripster AT All Terrain bike frame boasts cutting edge adventure bike features and versatility, allowing it to be built to excel across a variety of uses. Use it as a commuter bike, gravel bike, go bike packing, touring and ride bridleways on it, ride across continents on it. The new Tripster AT bike frameset will take all of this in its stride and more.With through axles front and rear, clearance for 700c x 45mm or 650B x 52mm tyres and with cable routing for any kind of group set, this bike can be a two wheeled Swiss Army Knife! Add in multiple bottle cage mounting, rack and mudguard mounts and the dependability of a British Standard bottom bracket with Kinesis UK proven geometry and you have a recipe for adventure.New to the Tripster AT is the Columbus Futura Cross fork. Columbus have been making headway into the premium carbon fork market recently and the newly launched Futura Cross fork is the perfect partner to our Tripster AT frame. The Columbus Futura fork is fitted with a flip-chip to allow adjustment of the rake of the fork between 47mm and 52mm. Where you place the chip will depend on how you like your Tripster to handle. As a starting point we recommend that if you have a smaller frame and/or are loaded for bike packing, then you will benefit from a longer wheelbase, and so place the chip in the 52mm position. The Tripster AT All Terrain bike is such a capable and versatile bike that it might well be the one you ride the most of all.Size Chart:
During the development of the Tripster AT all terrain frame we also worked closely with the late Mike Hall in the design process and gained from Mike s knowledge and love of long distance, multi-terrain riding. The final production model features a number of enhancements thanks to Mike s input and you can see this referenced on the frame graphics. Under Additional Info. tab is an email form Mike showing his input on the graphical styling of the Tripster AT.Tough yet lightweight 7046 series Kinesium tube set with tapered machined headtube31.8mm seat tube for 27.2mm seat post (will add a bit of compliancy)All new colour matched Columbus Futura Carbon fork with 12mm thru axleInboard Shimano Flat-mount disc mounts on frame and frame and fork (maximum 160mm rotors)Seat stay mounts for mudguards and pannier racks. Bridges on chain stay and seat stay for fender mounting, runs 40mm tyres with full mudguards for clean winter riding!Beyond gravel capability with 700c x 45mm or 650b x 52mm tyre clearance3 x bottle boss mounts for extra carrying capacity or storing a tool kegOptimum hydration system multi position down-tube bottle cage mounting to allow for full bottle carry capacity even with a frame bagGW Switch Lever Thru-axles includedInternal cable routing for mechanical and electronic gear systemsBSA threaded BB for real world low maintenance riding22mm long flat mount disc brake bolts required for the frameThe Kinesis Tripster AT All Terrain bike frame boasts cutting edge adventure bike features and versatility, allowing it to be built to excel across a variety of uses. Use it as a commuter bike, gravel bike, go bike packing, touring and ride bridleways on it, ride across continents on it. The new Tripster AT bike frameset will take all of this in its stride and more.With through axles front and rear, clearance for 700c x 45mm or 650B x 52mm tyres and with cable routing for any kind of group set, this bike can be a two wheeled Swiss Army Knife! Add in multiple bottle cage mounting, rack and mudguard mounts and the dependability of a British Standard bottom bracket with Kinesis UK proven geometry and you have a recipe for adventure.New to the Tripster AT is the Columbus Futura Cross fork. Columbus have been making headway into the premium carbon fork market recently and the newly launched Futura Cross fork is the perfect partner to our Tripster AT frame. The Columbus Futura fork is fitted with a flip-chip to allow adjustment of the rake of the fork between 47mm and 52mm. Where you place the chip will depend on how you like your Tripster to handle. As a starting point we recommend that if you have a smaller frame and/or are loaded for bike packing, then you will benefit from a longer wheelbase, and so place the chip in the 52mm position. The Tripster AT All Terrain bike is such a capable and versatile bike that it might well be the one you ride the most of all.Size Chart:
During the development of the Tripster AT all terrain frame we also worked closely with the late Mike Hall in the design process and gained from Mike s knowledge and love of long distance, multi-terrain riding. The final production model features a number of enhancements thanks to Mike s input and you can see this referenced on the frame graphics. Under Additional Info. tab is an email form Mike showing his input on the graphical styling of the Tripster AT.Tough yet lightweight 7046 series Kinesium tube set with tapered machined headtube31.8mm seat tube for 27.2mm seat post (will add a bit of compliancy)All new colour matched Columbus Futura Carbon fork with 12mm thru axleInboard Shimano Flat-mount disc mounts on frame and frame and fork (maximum 160mm rotors)Seat stay mounts for mudguards and pannier racks. Bridges on chain stay and seat stay for fender mounting, runs 40mm tyres with full mudguards for clean winter riding!Beyond gravel capability with 700c x 45mm or 650b x 52mm tyre clearance3 x bottle boss mounts for extra carrying capacity or storing a tool kegOptimum hydration system multi position down-tube bottle cage mounting to allow for full bottle carry capacity even with a frame bagGW Switch Lever Thru-axles includedInternal cable routing for mechanical and electronic gear systemsBSA threaded BB for real world low maintenance riding22mm long flat mount disc brake bolts required for the frameThe Kinesis Tripster AT All Terrain bike frame boasts cutting edge adventure bike features and versatility, allowing it to be built to excel across a variety of uses. Use it as a commuter bike, gravel bike, go bike packing, touring and ride bridleways on it, ride across continents on it. The new Tripster AT bike frameset will take all of this in its stride and more.With through axles front and rear, clearance for 700c x 45mm or 650B x 52mm tyres and with cable routing for any kind of group set, this bike can be a two wheeled Swiss Army Knife! Add in multiple bottle cage mounting, rack and mudguard mounts and the dependability of a British Standard bottom bracket with Kinesis UK proven geometry and you have a recipe for adventure.New to the Tripster AT is the Columbus Futura Cross fork. Columbus have been making headway into the premium carbon fork market recently and the newly launched Futura Cross fork is the perfect partner to our Tripster AT frame. The Columbus Futura fork is fitted with a flip-chip to allow adjustment of the rake of the fork between 47mm and 52mm. Where you place the chip will depend on how you like your Tripster to handle. As a starting point we recommend that if you have a smaller frame and/or are loaded for bike packing, then you will benefit from a longer wheelbase, and so place the chip in the 52mm position. The Tripster AT All Terrain bike is such a capable and versatile bike that it might well be the one you ride the most of all.Size Chart:
Perfect for flatter courses and time trials, the Dura-Ace C60 prioritizes aerodynamic efficiency and lateral rigidity. The new hub design, stiffer spokes, and deep-section rim are designed specifically to allow you to push harder in corners and ensure that every bit of your effort is translated into forward motion. Like the entire Dura-Ace wheel family, the new C60 started with a blank slate. Different from the C36 and C50, the C60 has a specific front hub design using Shimano's OPTBAL 2:1 spoke pattern to enhance lateral rigidity. The C60 also receives stiffer spokes, 1.8 mm instead of 1.5 mm. Tested by our professional athletes, this focus on the lateral rigidity of C60 allows you to push harder in corners and when manoeuvring at higher speeds. Lastly, the new wind-tunnel tested, deep-section rims feature a faster, more stable cross-section that time trialists, triathletes, and sprinters alike will enjoy. Centre-Lock Disc Rotor Mount The Centre Lock system makes an easy rotor installation possible with a spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency. D2 Aerodynamic Rim Profile Aerodynamic performance is affected by wind direction. To create the D2 rim, Shimano engineers considered both frontal and crosswinds, aiming to achieve optimal performance in real-world riding conditions. Extensive prototype testing, in the wind tunnel and on the road, proved that a wide rim shape with a deep tire bed performs best across a wide range of conditions. At yaw angles ranging from 0 to 15 degrees, the Shimano D2 rim profile reduces air drag better than others aero shape rims. This rim design also boosts lateral wheel stiffness and offers improved vertical compliance for increased control, comfort and durability on the road. Rear Wheel OPTBAL Spoke System The OPTBAL rear wheel spoke system features 21 spokes—14 on the drive side and 7 on the non-drive side. Cassette spacing in today’s wheels produces unbalanced tension in traditional 1:1 spoke systems. This unbalance is intensified with the 11-speed cassette, producing nearly double the tension on the drive side spokes. Generally, high and low tension spokes have respectively tendency toward breaking down and coming loose spoke nipples. Unbalanced tension affects durability and strength. The OPTBAL design rebalances spoke tension, enhancing wheel rigidity and strength for a more durable wheel. Shimano E-Thru Axle System The tool-less type thru-axle skewer system optimizes rigidity and weight balance and enables easy operation with a reliable internal cam mechanism. The 15 mm thru-axle system is 15% stiffer torsionally and 25% stiffer in transverse shear than a traditional 9 mm quick release front axle system. High rigidity is secured while keeping the optimum weight balance. The E-Thru axle hub system minimizes the distortion of suspension while maintaining lightweight for riding around sharp corners at high speed.
The all-rounder of the new Dura-Ace wheel lineup, the C50 is both lighter than the previous C40 model and nearly as aerodynamic as the previous C60. It's a wheelset at home in a wide range of conditions. From time trials to criteriums, on rolling terrain or attempting a personal best, the new C50 is the ideal wheel for spirited road riding. The perfect blend of low weight and aerodynamic performance, the all-new Dura-Ace C50 features an updated all-carbon tubeless rim and new hub design that drops weight while enhancing rigidity. Centre-Lock Disc Rotor Mount The Centre Lock system makes an easy rotor installation possible with a spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency. D2 Aerodynamic Rim Profile Aerodynamic performance is affected by wind direction. To create the D2 rim, Shimano engineers considered both frontal and crosswinds, aiming to achieve optimal performance in real-world riding conditions. Extensive prototype testing, in the wind tunnel and on the road, proved that a wide rim shape with a deep tire bed performs best across a wide range of conditions. At yaw angles ranging from 0 to 15 degrees, the Shimano D2 rim profile reduces air drag better than others aero shape rims. This rim design also boosts lateral wheel stiffness and offers improved vertical compliance for increased control, comfort and durability on the road. Rear Wheel OPTBAL Spoke System The OPTBAL rear wheel spoke system features 21 spokes—14 on the drive side and 7 on the non-drive side. Cassette spacing in today’s wheels produces unbalanced tension in traditional 1:1 spoke systems. This unbalance is intensified with the 11-speed cassette, producing nearly double the tension on the drive side spokes. Generally, high and low tension spokes have respectively tendency toward breaking down and coming loose spoke nipples. Unbalanced tension affects durability and strength. The OPTBAL design rebalances spoke tension, enhancing wheel rigidity and strength for a more durable wheel. Shimano E-Thru Axle System The tool-less type thru-axle skewer system optimizes rigidity and weight balance and enables easy operation with a reliable internal cam mechanism. The 15 mm thru-axle system is 15% stiffer torsionally and 25% stiffer in transverse shear than a traditional 9 mm quick release front axle system. High rigidity is secured while keeping the optimum weight balance. The E-Thru axle hub system minimizes the distortion of suspension while maintaining lightweight for riding around sharp corners at high speed.