WH-R8170 TL carbon clincher disc brake designed to meet pro road race criteriaLightweight clincher full carbon 50 mm deep rim for improved aerodynamics, increased rigidity and excellent inertia for sprinters and TT specialistsEasy to use Center Lock rotor mount for use with disc brakesStainless steel butted (2.0-1.8-2.0) and bladed straight pull spokes for optimal balance and rigidityElbow-less spokes make for a strong yet compliant wheelHigh lateral rigidity is produced with a wide flange spacingLabyrinth double-contact sealing effectively shuts out water and dirtAlloy cone with integrated steel Borozon treated bearing races - super mirror finish reduces frictionCold forged, machined aluminium hub shell and oversized 7075 alloy axle keep the wheel weight to a minimumFor 100 x 12 mm axle700C clincher compatible.
WH-R8170 TL carbon clincher disc brake designed to meet pro road race criteriaLightweight clincher full carbon 60 mm deep rim for improved aerodynamics, increased rigidity and excellent inertia for sprinters and TT specialistsEasy to use Center Lock rotor mount for use with disc brakesStainless steel butted (2.0-1.8-2.0) and bladed straight pull spokes for optimal balance and rigidityElbow-less spokes make for a strong yet compliant wheelHigh lateral rigidity is produced with a wide flange spacingLabyrinth double-contact sealing effectively shuts out water and dirtAlloy cone with integrated steel Borozon treated bearing races - super mirror finish reduces frictionCold forged, machined aluminium hub shell and oversized 7075 alloy axle keep the wheel weight to a minimumFor 100 x 12 mm axle700C tubless clincher compatible.
All-new lever ergonomics on the Dura-Ace ST-R9270 dual control levers bring new levels of comfort and control to road cycling. With the fastest wireless shifting available and even more precise brake modulation, Dura-Ace redefines performance. Now featuring Servo Wave Action brake technology, the new Dura-Ace ST-R9270 brake lever delivers modulation and control like never before. Wireless shifting keeps your bike looking clean while offering the fastest, most precise gear changes available. All of this resides in a Dual Control Lever to employs the most advanced materials to offer lightweight and refined ergonomics that provide comfort and control for the most demanding conditions. Servo Wave Precise Braking Control When you pull a Servo Wave brake lever, initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved control. Shimano DCL Dual Control Lever DCL stands for Dual Control Lever. It has brake and shifting functions in the system and enables easy operation. Ergonomic innovation is as critical to higher standard performance as the added gearing. The shift internals borrows the robustness from Shimano's MTB technology and is so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration and simply has to be experienced to be understood. Shimano E-Tube E-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano. Shimano's genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application.
The Dura-Ace FC-R9200 chainset is the driving force at the heart of the bicycle. This chainset ensures that no portion of your pedal stroke is wasted. With hollow arms and chainrings, weight is kept to a minimum but stiffness and shifting precision is maximized. Hollowtech II Technology for World-Class Strength at a Low Weight The Dura-Ace FC-R9200 crank performs two vital functions: transferring your pedalling effort into the drivetrain and ensuring the fastest, most precise front shifting available. With Hollowtech II crank arms to ensure lightweight and Shimano's class-leading chainring designs, the FC-R9200 won't let you down. And the FC-R9200 12 Speed Chainset is offered in even shorter crank arm lengths to ensure there are options to fit any rider. Hollowglide Chainring Technology Hollow technology on the outer chainring. The Hollowglide construction ensures high rigidity while its hollow structure cuts down on weight yet maintains strength. This provides better power transfer and quicker and more precise front shifting performance. Hollowtech II Forged Crank Arms A lightweight crankset not only reduces the bike’s weight but decreases rotating mass to aid in acceleration. The challenge is to reduce the weight of the crank without reducing its strength and rigidity. Shimano's advanced forging technology has solved the problem through the HOLLOWTECH crank. Just like high-quality frame tubing, a hollow crank arm can provide amazing strength and rigidity at very lightweight. The Best Balance of Stiffness, Strength and Weight The concept of Hollowtech II technology is focused on producing a superior crankset that will maximize a rider’s power transfer. The rigidity of the crankset ensures pedalling efficiency while its low weight, a key element of the crankset, aids in cycling longer distances over which the rider needs to pedal more. Naturally, Shimano strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedalling stability, allowing for more efficient power transfer. The Shimano Dura-Ace R9200 12 Speed Chainset has been developed by pursuing the optimum balance of stiffness & rotating performance in a lightweight and beautiful crankset design.
With stunning acceleration, the new Dura-Ace R9270 C36 wheelset will change the way you experience climbs, corners, even stoplights. This is because it isn't just how much a wheel weighs but where the weight is on the wheel that matters. The all-new C36 design shaves mass at every opportunity but especially at the rim. The result is a lively wheelset that can transform your ride. Lighter, Wider and Faster Carbon Road Race Wheel With both a lighter, wider all-carbon rim and a lighter hub, the new Dura-Ace C36 won't shy away from a day of climbing. The new rim is 36 mm deep and still delivers good aerodynamic efficiency despite its gossamer weight. Meanwhile, the hub features an alloy freehub body and a new engagement mechanism for increased 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.
Shimano Dura-Ace R9270 Di2 12 Speed Disc BrakeThe Dura-Ace R9270 Di2 12 Speed Disc Brake from Shimano features Servo Wave technology and is compatible with Shimano Di2 electronic drivetrain systems. Plus, it guarantees powerful all-weather stopping power and flex-free lightweight braking performance thanks to its carbon fibre brake lever and titanium hardware.All-new lever ergonomics on the Dura-Ace ST-R9270 dual control levers bring new levels of comfort and control to road cycling. With the fastest wireless shifting available and even more precise brake modulation, Dura-Ace redefines performance. Now featuring Servo Wave Action brake technology, the new Dura-Ace ST-R9270 brake lever delivers modulation and control like never before. Wireless shifting keeps your bike looking clean while offering the fastest, most precise gear changes available. All of this resides in a Dual Control Lever to employs the most advanced materials to offer lightweight and refined ergonomics that provide comfort and control for the most demanding conditions. Servo Wave Precise Braking ControlWhen you pull a Servo Wave brake lever, initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved control. Shimano DCL Dual Control LeverDCL stands for Dual Control Lever. It has brake and shifting functions in the system and enables easy operation. Ergonomic innovation is as critical to higher standard performance as the added gearing. The shift internals borrows the robustness from Shimano's MTB technology and is so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration and simply has to be experienced to be understood. Shimano E-TubeE-Tube is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and Shimano. Shimano's genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application. Features: Quick and intuitive shifting Series: Dura-Ace R9200 Series Drivetrain: Shimano Di2 Electronic Speeds: 12-Speed Carbon fibre brake lever and titanium hardware SERVO WAVE technology optimizes brake control Raised hood peak improves ergonomics, while a longer hood body increases hand support Compatible with satellite shifters 1.5 to 2 years of battery life with easy-to-change CR1632 shifter batteriesA 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
DT Swiss PR 1400 Dicut Oxic 21mm Rear WheelAn advanced wheel for the distance road rider, this PR1400 comes equipped with a sturdy aluminium rim and an advanced braking surface to give a controlled and reliable performance through every mile. Designed with an 18mm internal width, the rim rolls with poise and strength over flat courses and intense climbs and deals brilliantly with the stresses of fast-paced road journeys. Strong and Lightweight, Aluminium Road Wheel Coated with a ceramic OXiC formula for a longer-lasting performance, the rim brake surface delivers a dependable and durable stopping experience and enhances your speed control. Spinning on a DT240 hub with SINC ceramic bearings, this excellent road wheel moves with minimal friction, resulting in a composed and easy-to-handle experience on smooth and rougher terrains. The hub is also laced with Aero Comp spokes for improved stiffness and aerodynamics. A Ratchet System freehub gives this strong back wheel additional thrust when you need it most while the tubeless-ready profile helps to minimise the overall weight. The DT Swiss PR 1400 Dicut Oxic 21mm Rear Wheel is an efficient and fast-rolling choice for the modern road rider. Features: Rim Material: Aluminium Rim Type: Clincher Internal Rim Width: 18mm External Rim Width: 21.5mm Rim Height: 21mm Spokes: DT Aero Comp Wide straightpull with DT ProLock Squorx ProHead aluminium nipples, 2-cross lacing Hub Type: DT240 Hub Axle Type: 130x5mm QRFreehub: Ratchet System, 36 SL, Shimano 11-speed Tubeless-Ready: Yes Brake Standard: Rim Brake Recommended Maximum Weight: 120kg Includes: RWS Titan, Tubeless tape 21mm, SRAM XDR Road freehub body kit, Swissstop BXP, tubeless valve and refill kit Weight: 807g Buy DT Swiss Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano Dura-Ace R9200 12 Speed ChainsetThe Dura-Ace R9200 12 Speed Chainset from Shimano provides the optimum balance of strength and rigidity at a low weight. Shimano's Hollowtech II and Hollowglide technologies provide outstanding power transfer and smooth gear shifts while it's engineered to excel specifically with the Shimano 12-Speed road groupset systems.The Dura-Ace FC-R9200 chainset is the driving force at the heart of the bicycle. This chainset ensures that no portion of your pedal stroke is wasted. With hollow arms and chainrings, weight is kept to a minimum but stiffness and shifting precision is maximized.Hollowtech II Technology for World-Class Strength at a Low WeightThe Dura-Ace FC-R9200 crank performs two vital functions: transferring your pedalling effort into the drivetrain and ensuring the fastest, most precise front shifting available. With Hollowtech II crank arms to ensure lightweight and Shimano's class-leading chainring designs, the FC-R9200 won't let you down. And the FC-R9200 12 Speed Chainset is offered in even shorter crank arm lengths to ensure there are options to fit any rider.Hollowglide Chainring TechnologyHollow technology on the outer chainring. The Hollowglide construction ensures high rigidity while its hollow structure cuts down on weight yet maintains strength. This provides better power transfer and quicker and more precise front shifting performance.Hollowtech II Forged Crank ArmsA lightweight crankset not only reduces the bike's weight but decreases rotating mass to aid in acceleration. The challenge is to reduce the weight of the crank without reducing its strength and rigidity.Shimano's advanced forging technology has solved the problem through the HOLLOWTECH crank. Just like high-quality frame tubing, a hollow crank arm can provide amazing strength and rigidity at very lightweight.The Best Balance of Stiffness, Strength and WeightThe concept of Hollowtech II technology is focused on producing a superior crankset that will maximize a rider's power transfer. The rigidity of the crankset ensures pedalling efficiency while its low weight, a key element of the crankset, aids in cycling longer distances over which the rider needs to pedal more. Naturally, Shimano strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank.The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedalling stability, allowing for more efficient power transfer.The Shimano Dura-Ace R9200 12 Speed Chainset has been developed by pursuing the optimum balance of stiffness and rotating performance in a lightweight and beautiful crankset design.Features: Series: Dura-Ace R9200 Series Optimal balance of stiffness, strength, weight and rotational performance Hollowglide structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting New 54-40T option to realize the most efficient drivetrain Hollowtech II crank arms for strength at a low weight Recommended Bottom Bracket: Press-Fit: SM-BB92-41B; Threaded: BB-R9100 Q-Factor: 148mm Drivetrain Rear Speeds: 12-Speed Chainline: 44.5mm Weight: 714g (54-40T); 692g (52-36T); 685g (50-34T)A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano Dura-Ace R9200 12 Speed ChainsetThe Dura-Ace R9200 12 Speed Chainset from Shimano provides the optimum balance of strength and rigidity at a low weight. Shimano's Hollowtech II and Hollowglide technologies provide outstanding power transfer and smooth gear shifts while it's engineered to excel specifically with the Shimano 12-Speed road groupset systems.The Dura-Ace FC-R9200 chainset is the driving force at the heart of the bicycle. This chainset ensures that no portion of your pedal stroke is wasted. With hollow arms and chainrings, weight is kept to a minimum but stiffness and shifting precision is maximized.Hollowtech II Technology for World-Class Strength at a Low WeightThe Dura-Ace FC-R9200 crank performs two vital functions: transferring your pedalling effort into the drivetrain and ensuring the fastest, most precise front shifting available. With Hollowtech II crank arms to ensure lightweight and Shimano's class-leading chainring designs, the FC-R9200 won't let you down. And the FC-R9200 12 Speed Chainset is offered in even shorter crank arm lengths to ensure there are options to fit any rider.Hollowglide Chainring TechnologyHollow technology on the outer chainring. The Hollowglide construction ensures high rigidity while its hollow structure cuts down on weight yet maintains strength. This provides better power transfer and quicker and more precise front shifting performance.Hollowtech II Forged Crank ArmsA lightweight crankset not only reduces the bike's weight but decreases rotating mass to aid in acceleration. The challenge is to reduce the weight of the crank without reducing its strength and rigidity.Shimano's advanced forging technology has solved the problem through the HOLLOWTECH crank. Just like high-quality frame tubing, a hollow crank arm can provide amazing strength and rigidity at very lightweight.The Best Balance of Stiffness, Strength and WeightThe concept of Hollowtech II technology is focused on producing a superior crankset that will maximize a rider's power transfer. The rigidity of the crankset ensures pedalling efficiency while its low weight, a key element of the crankset, aids in cycling longer distances over which the rider needs to pedal more. Naturally, Shimano strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank.The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedalling stability, allowing for more efficient power transfer.The Shimano Dura-Ace R9200 12 Speed Chainset has been developed by pursuing the optimum balance of stiffness and rotating performance in a lightweight and beautiful crankset design.Features: Series: Dura-Ace R9200 Series Optimal balance of stiffness, strength, weight and rotational performance Hollowglide structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting New 54-40T option to realize the most efficient drivetrain Hollowtech II crank arms for strength at a low weight Recommended Bottom Bracket: Press-Fit: SM-BB92-41B; Threaded: BB-R9100 Q-Factor: 148mm Drivetrain Rear Speeds: 12-Speed Chainline: 44.5mm Weight: 714g (54-40T); 692g (52-36T); 685g (50-34T)A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano Dura-Ace R9200 12 Speed ChainsetThe Dura-Ace R9200 12 Speed Chainset from Shimano provides the optimum balance of strength and rigidity at a low weight. Shimano's Hollowtech II and Hollowglide technologies provide outstanding power transfer and smooth gear shifts while it's engineered to excel specifically with the Shimano 12-Speed road groupset systems.The Dura-Ace FC-R9200 chainset is the driving force at the heart of the bicycle. This chainset ensures that no portion of your pedal stroke is wasted. With hollow arms and chainrings, weight is kept to a minimum but stiffness and shifting precision is maximized.Hollowtech II Technology for World-Class Strength at a Low WeightThe Dura-Ace FC-R9200 crank performs two vital functions: transferring your pedalling effort into the drivetrain and ensuring the fastest, most precise front shifting available. With Hollowtech II crank arms to ensure lightweight and Shimano's class-leading chainring designs, the FC-R9200 won't let you down. And the FC-R9200 12 Speed Chainset is offered in even shorter crank arm lengths to ensure there are options to fit any rider.Hollowglide Chainring TechnologyHollow technology on the outer chainring. The Hollowglide construction ensures high rigidity while its hollow structure cuts down on weight yet maintains strength. This provides better power transfer and quicker and more precise front shifting performance.Hollowtech II Forged Crank ArmsA lightweight crankset not only reduces the bike's weight but decreases rotating mass to aid in acceleration. The challenge is to reduce the weight of the crank without reducing its strength and rigidity.Shimano's advanced forging technology has solved the problem through the HOLLOWTECH crank. Just like high-quality frame tubing, a hollow crank arm can provide amazing strength and rigidity at very lightweight.The Best Balance of Stiffness, Strength and WeightThe concept of Hollowtech II technology is focused on producing a superior crankset that will maximize a rider's power transfer. The rigidity of the crankset ensures pedalling efficiency while its low weight, a key element of the crankset, aids in cycling longer distances over which the rider needs to pedal more. Naturally, Shimano strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank.The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedalling stability, allowing for more efficient power transfer.The Shimano Dura-Ace R9200 12 Speed Chainset has been developed by pursuing the optimum balance of stiffness and rotating performance in a lightweight and beautiful crankset design.Features: Series: Dura-Ace R9200 Series Optimal balance of stiffness, strength, weight and rotational performance Hollowglide structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting New 54-40T option to realize the most efficient drivetrain Hollowtech II crank arms for strength at a low weight Recommended Bottom Bracket: Press-Fit: SM-BB92-41B; Threaded: BB-R9100 Q-Factor: 148mm Drivetrain Rear Speeds: 12-Speed Chainline: 44.5mm Weight: 714g (54-40T); 692g (52-36T); 685g (50-34T)A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Key Features:With Di2 technology shifting is easy and precise - just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear,The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also provides effortless gear shifts,Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold,Shifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, and a titanium clamp band / fixing bolt,Drop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STI,Brake lever pivot is positioned to be used with super SLR brake callipers, increase power providing excellent ergonomics when riding on the hoods,Finely tuneable reach adjusters for the levers enable custom fitment for all hands,Levers are supplied without electrical cables, as these need to be ordered separately to suit,Two ports for use with E-tube electric cables, plus port for remote sprinter shifters,Comes complete with SLR brake cable set,Weight is 230 grams a pair.
Fulcrum Racing 3 C17 Clincher WheelsetThe Fulcrum Racing 3 C17 Clincher Wheelset ticks all the boxes. Designed for Training, Racing and long-distance Endurance riding, it is perfect for the training cyclist who won't compromise on quality and performance. It's also ideal for long-distance riding and benefits from a reliable and durable construction. Stiff, Flex-Free & LightThis wheelset features a high-end aluminium rim construction, which provides stiffness, and flex-free performance while being lightweight. The braking profile has been precision machined and offers exceptional braking performance and consistency. This will provide a superbly comfortable and stable ride no matter how long your journey, or how rigorous your training or race session may be.Features: Material: Rim, Hubs: Aluminium; Spokes: Stainless Steel Rim Height: Front: 25mm; Rear: 30mm Internal Rim Width: 17mm External Rim Width: 23mm Braking System: Rim Brake Braking Surface: Aluminium Turned Axle Compatibility: Quick Release Spoke Count: Front: 16; Rear: 21 Spoke Type: Aero Straight-Pull Bearings: Adjustable, Cup & Cone System Freehub: Shimano 11-Speed Weight: 1560gTechnologies: 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. 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. Directional 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. Rim Dynamic Balance: Simple and Elegant, the weight of the rim gasket is balanced on the opposite side with an item of similar weight.Buy Fulcrum Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.