Zefal Swan Road Bike Rear MudguardQuick and easy to install and remove, the versatile and adaptable Swan Rear Mudguard gives the coverage you need for riding your road bike in wet conditions. Coming with Zefal’s MD-Turn mounting collar, it suits all the commonly used seatpost sizes, even on classic bikes. There’s also a reflective section on the mount to make you more visible at night.Adjustable Clip-On MudguardTo ensure maximum protection, the mudguard arm can be adjusted up or down. The shape of the guard follows the wheel, to give you the best protection from spray and dirt. Fitting the Swan couldn't be easier - the MD-Turn system requires no tools and is adjustable for seat posts from 25 to 32mm in diameter.Features: Material: Technopolymer Resin Wheel Size: 28"/700c and 650c Maximum Tyre Size: 700x32c Dimensions: 530x45mm Blade Width: 48mm / 1/8" Use: Road Rear mudguard can be fitted quickly and easily to all road bikes Reflective ring offers increased visibility Can be fitted without tools Quick screw-on mounting system on seat posts from 25 to 35mm Adjustable angle Weight: 150g Buy Zefal Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.
The Zefal Swan Road rear mudguard is a low cost and effective way to keep your behind dry and free from road spray during the winter months. The guard can be fitted/removed in seconds thanks to the quick screw-on mounting system that attaches to the seat post from 25 to 32mm diameter. The fully adjustable tail ensures you can get an optimal fit while the reflective ring gives you better visibility in low light conditions.
A package combination of the Swan Road (rear) and Croozer Road (front) mudguards for road/hybrid bikesSwan Road Rear Mudguard - The 45mm wide Swan Road features the unique MD-Turn fitting system and is designed to blend aesthetically with the narrower tyres on road bikes and sports hybridsCroozer Road Front Mudguard - Elegant mud protection with the conveniance of a fast fit, tool free mounting system. A narrow width at the top to prevent fouling of cables, the Croozer Road tapers out to be 20mm wider at the end - where it counts when your wheel turnsFront:Material: Technopolymer resin with dual material spoiler,Fixation: MD-Quick - On fork and stays - Adjustable up to 75mm,Blade Width: From 50 to 70mm,Wheel Dia: 700c / 28 inch,Weight: 60g.Rear:Material: Technopolymer resin,Fixation: MD-Turn: On seat post, adjustable for 25 to 32mm dia',Blade Width: 45mm,Wheel Dia: 700c / 28 inch,Weight: 150g.
Swan Road Rear Mudguard - A 45mm wide version of the Swan, the Swan Road features the same unique fitting system, but is designed to blend better aesthetically with the narrower tyres on road bikes and sports hybrids. Croozer Road Front Mudguard - Elegant mud protection with the conveniance of a fast fit, tool free mounting system. A narrow width at the top to prevent fouling of cables, the Croozer Road tapers out to be 20mm wider at the end - where it counts when your wheel turns.
Zefal Tyre Liners offer outstanding value for money, they sit in between the inner tube and tyre to provide an extra level of protection against sharp objects on the road or trail. One pack contains enough liner to protect 2 Wheels. One of the best ways to prevent those dreaded punctures! Green Kit - Designed for MTB use, has 34mm wide liners and fits 24/26 inch WheelsBlue Kit - Aimed at MTB's and fits 29 inch wheels with 34mm thick liner strip Grey Kit Purely for Road bike use at 19mm thick fitting 700c and 27 inch Wheel SizesOrange Kit - Aimed at hybrid bikes and fits 700c and 27 inch wheels with 27mm thick liner strip
Tame Wind, Scale MountainsZipp’s 202 Tubular is a versatile wheelset that climbs like a mountain goat and descends like an eagle. Its confirmation comes in the form of numerous Grand Tour stage wins, including AG2R LA MONDIALE’s Alexis Vuillermoz and Romain Bardet in the 2015 Tour de France. Now, with the 77/177 hubset, this climber’s wheelset is even better.To get to the base of the climb, the 202’s 32 mm toroidal profile was developed in the wind tunnel to roll on the flats as efficiently as many 45- to 50mm-deep rims. When the tarmac tilts upward, with superior stiffness and weight of only 1,180 grams, the 202 flies. Beyond the summit, the 202’s high lateral stiffness delivers precise handling on tricky descents and crisp accelerations to finish off the competition.While the 202 Tubular is renowned for its prowess on steep terrain, it’s pro proven for all kinds of speed needs and deeds. Zipp pro triathlete Jan Frodeno won gold in Beijing riding the 202. This wheelset even was ridden to fourth place at Paris-Roubaix. Now the inclusion of the 77/177 hubset gives best-in-class durability and improved bearing protection with no pre-load adjustment needed to raise the 202 to an even higher level: Optimized flange geometry and spoke hole attachment pattern with Sapim® CX-Ray spokes to optimize torsional and lateral stiffness without sacrificing weight or robustness., Includes newly designed quick-release skewers with a wider more ergonomic handle to give more leverage for opening and closing. When closed, lever contours neatly with the frame., New robust hub platform with distinctive graphics., For those looking for a wider gear range, or tackling especially extreme terrain, a XD driver body for 177 is sold separately and easily installed to allow for more cassette options including a 10-42. â�¨The hubset is designed to swap driver bodies without re-dishing wheel.,Max recommended rider weight 225lbs.Available in two decal options, the stealthy Matte Black or the distinctive Matte White decals. Each 202 Tubular wheel comes with Tangente Platinum Pro Evo brake pads, Zipp Integrated Valve Extender with valve-core wrench, and quick release. Weight 670g Hub Used 177 Rim Depth 32.0mm Brake Track Width (center) 22.56mm Max Width 22.61mm Spokes Sapim® CX-Ray Spoke Count 24 Spoke Length Non-Drive 284mm Spoke Pattern Non-Drive 2 cross Spoke Pattern Drive 2 cross Spoke Length Drive 284mm 11-speed compatible hub Yes Track Adaptable No Dimpled Surface Yes Nipples Sapim® External Nipples Yes
From the engineers at Zipp, comes the all-new 302 Carbon Clincher. With a 45mm deep Indianapolis-made carbon rim, optimized for low aerodynamic drag and precise handling in all riding conditions, the 302 Carbon Clincher delivers the ride that Zipp wheels are renowned for at a price that makes Zipp carbon quality and performance more attainable than ever.To keep the wheels light and easy to service we’ve used a center locking brake rotor mounting interface on our 76D/176D hubs. The 76D/176D hubset also features replaceable axle end caps for thru-axle compatibility. Add in the 302’s XDR driver body compatibility, and you have a wheelset that can meet the needs of virtually everyone. And like all of our carbon clinchers, the 302 uses the same rim bed design that makes tire removal and installation as easy as possible.The 302’s smooth carbon rim is hand assembled to Zipp’s new 76D/176D hubs using Belgian CX-Sprint spokes and brass spoke nipples to build a wheel that is both fast and reliable—tough enough to survive the Spring Classics or the road less travelled, yet light enough to tackle the steepest grades.302 rims, like all of our carbon clinchers, are proudly made in Indianapolis. Since Zipp’s inception in 1988 we’ve chosen to handcraft our carbon rims here for one reason: Precision. With complete control of the manufacturing process from start to finish, we build wheels that set the industry standard for precision. Rigorously inspected at our Indianapolis factory, we ensure that only the world’s best wheels receive the Zipp label—and we are proud to make this level of quality more attainable than ever with the 302. The 45mm rim depth provides proven aero benefits with high stability, yet the 302 remains nimble to make this a wheel for all terrain and wind conditions.To keep the wheels light and easy to service we’ve used a splined brake rotor mounting interface for quick and easy rotor installation and removal. The 76D/176D hubs also feature replaceable axle end caps for through-axle compatibility. Add in the 302’s XDR driver body compatibility, and you have a wheelset that can meet the needs of virtually everyone. And like all of our carbon clinchers, the 302 uses the same rim bed design that makes tire removal and installation as easy as possible.Experience Zipp speed with the 302 Disc-Brake.,Each 302 Disc-Brake Wheel Includes:,Zipp valve extenders,Zipp rim tape,SRAM XDR driver body for 176D hub available separately.
*Please Note: Images for display purposes only - check description for specifications.Without LimitsRoad bikes are going where they’ve never gone before, are expected to do more, and are being ridden harder than ever. At the same time disc brakes are rewriting the rules of what’s possible with rim design. For this new era, the Zipp® 303 Firecrest Tubeless Disc-brake wheelset sets the new standard. With an all-new disc-specific, tubeless rim, the 303 Firecrest Carbon Clincher is now internally 21mm wide and faster than ever. Designed from the start as a tubeless rim, the 303 Firecrest features a rim bed made with internal ridges to lock the tire’s bead in place, ensuring secure performance, even when ridden at lower tire pressures. A new carbon fibre layup keeps weight low while maintaining the 303’s legendary durability. The rim’s lightweight design allows the 303 to glide up the steepest climbs while our robust 77/177D hubset, keep the wheels stiff and responsive.Things To RememberAero, durable, Light weight, Tubeless,77/177 hubset,Thru-axle compatible,. Features And BenefitsFirecrest rim Technology provides world class handling and stability,77/177d hubset, with its best-in-class durability and improved bearing protection, all with no pre-load adjustment needed,Aero performance, durable and Light Weight,To ensure compatibility with any bike, our versatile 77/177D hubs come with swappable end caps to work with QR’s and thru-axles,ISO 4210 compliant.,. SpecificationsSize (wheels): 650B, 700c,Rim construction: Carbon,Tire compatibility: Clincher Tubeless Ready,Brake compatibility: Disc (6-bolt),Rim - inside width: 21mm,Rim profile: Symmetrical,Rim finish: UD fibre, adhesive decals,Colour (Decal): Black, Blue, White,Nipple material: Aluminium,Spoke type: CX-Ray - Black,Spoke count: 24,Spoke pattern: 2 Cross,Axle type (Wheels): Conversion Caps included,Bearings: Cartridge - Carbon Steel,.
Wide Carbon Fibre Road Bike Wheel Expanding greatly on its heritage of conquering the Spring Classics, this 303 wheel maintains its ideal-for-every-terrain 45mm rim depth. However, this model adds a significantly wider internal width to provide greater performance and ride quality in almost every measurable way. Road bikes are more versatile than ever no matter the road surface, but just as fast as before. The 303 S offers an entirely new rim profile and design to optimise rider performance on this new breed of bike. This wheelset is tubeless compatible and designed for disc-brake bikes, allowing the ability to run wide tires at lower pressures for race-ready speed on or off the tarmac. 45mm Deep Front Wheel The 303 S is among Zipp's lightest wheelsets, optimised for top aero performance with a 28mm tyre but capable of handling gravel tyres up to 50mm wide. The key innovation is in the 303 S’s rim design. Its 45mm rim depth is the same as its predecessor, the 302 Disc brake. But its external rim width is 2mm wider, at 27mm, and its tyre bed is a full 7mm wider, at 23mm internal width. That rim platform is designed to be the fastest with a 28mm tyre. The wide rim optimises tyre profile to allow lower tyre pressure. That helps to reduce rolling resistance and provides a more compliant ride. The result of all this is a 10 watt savings vs. a top peer wheel in total power required to ride 40kph on a flat road with a 28mm tire, according to internal Zipp testing. This groundbreaking wheelset also features all-new cosmetics, setting the rider apart from the pack, and comes at a very attractive price. Additional Features: Provides today’s cyclists the versatility they demand with the speed they crave Updated Zipp graphics and cosmetic identity Fastest with 28mm, fits wide gravel tyres Wide rims optimise tyre profile to allow lower tyre pressure, especially with tubeless. This results in a larger contact patch for increased grip Lower tyre pressures and larger volume provides a compliant ride with fewer vibrations Significant watt savings when running larger tyres at lower pressure Wide hookless rims create a seamless transition to the tyre, reducing drag 76 DB hub with centre locking interface Lifetime Warranty
Zipp 353 NSW Carbon TL Front Road Disc Wheel This road bike front wheel features a high-quality carbon hookless rim construction, which offers increased stiffness, strength and an overall lower weight as you conquer the demands of modern road cycling. Developed for greater versatility and speed, it's equipped with many of Zipp's finest performance-enhancing technologies including a Sawtooth rim shape and Total System Efficiency (TSE) that offer reduced wind resistance, rolling resistance and gravity vibration losses. Coming kitted out with 45mm deep rim shape, this model delivers fantastic speed on every terrain with best-in-class aerodynamic efficiency and crosswind stability. Tubeless, Hookless Road Bike Front WheelThe 353 NSW is Zipp's lightest tubeless wheel yet, making it a fast-puncher ready to fight its way into the breakaway. Zipp's use of a hookless (straight side) rim in the 353 NSW is integral to achieving the brand's mission of Making You Faster. With hookless, the transition between the tyre and the rim is more seamless and aerodynamic. Zipp's hookless rims have more efficient resin distribution, which results in a lighter and highly durable front wheel. Thanks to its 25mm internal rim width, its ideal for running wider tubeless tyres at reduced air pressure for improved stability, greater comfort and fewer chances of flats or punctures.Sawtooth Rim Shape with HyperFoilsZipp's 353 NSW's Sawtooth rim shape with Hyperfoils optimises aerodynamic efficiency and crosswind stability. The Sawtooth design also allows the rim to be structurally strong but remain lightweight, which will help you snap out of corners and maintain your speed no matter the terrain. Centre Lock Disc Brake CompatibilityReady for clocking up the miles, this front wheel is equipped with Centre Lock disc brake compatibility, so riders can enjoy powerful and consistent braking operation wherever their ride takes them. This makes the Zipp 353 NSW Carbon TL Disc Centre Lock Front 2021 a great choice of upgrade for faster, smoother and more dependable performance on your road bike.Features: Rim Material: Carbon Rim Finish: Unidirectional (UD) Fibre Rim Graphics: Impress technology Axle Size: 12x100mm Use: Road Inner Rim Width: 25mm Rim Depth: 45mm Rim Shape: Symmetrical, Sawtooth Rim Profile: Hookless, Tubeless Clincher Hub: Cognition V2 Drive Side Spoke Length: 258mm, 266mm Non Drive Side Spoke Length: 264mm, 266mm Size: 700c Tyre Compatibility: Tubeless tyres only Brake Compatibility: Centre Lock disc brake Single or Pair: Single Lifetime warranty Weight: 580gTechnologies: Impress: Zipp has employed ImPress graphics technology on this model, which prints graphics directly on the wheel, to help allow the dimples to do what they were design to do - help control vortex shedding, the rate at which air sheds off the wheel. Managing this is crucial to stability. Sawtooth: SawTooth is the name given to Zipp NSW's patented variable depth 53/58mm rims. Developed utilising the principles of the emerging science of biomimicry, Zipp engineers began the rigorous aero development process of SawTooth utilising the wind tunnel, CFD, and real-world testing. The result is a rim shape that takes nature's most elegant design solutions and combines engineering precision to deliver a wheel that performs unlike any made before. This patented rim shape achieves something conventional aero wheels cannot; it simultaneously reduces both aerodynamic drag and side force for the ultimate in AeroBalance. Sawtooth accomplishes this with a series of patented fin-shaped Hyperfoil nodes along the inner diameter of the rim that work together with HexFin ABLC dimples for improved airflow. The result is Zipp's highest performing wheel ever released with both aero-drag reduction and reduced side force at all wind yaw angles. This is important because higher wind yaw angles are where bike handling is most affected by the wind. Hyperfoil: Hyperfoil is the name given to the individual nodes on Zipp NSW variable depth Sawtooth rims. Each of these patented structures features Zipp's HexFin ABLC dimples that help to stabilize handling in gusting wind by increasing wind vortex shedding frequency. The higher frequency vortex shedding produced by Sawtooth creates a greater number of smaller, less powerful, yet more predictable vortices leading to greater wheel stability. This added stability translates into greater rider control, thereby saving energy that is typically expended trying to hold a line in gusting wind. The result is a faster, more confident riding experience whether you are laying down power or descending sinuous mountain roads. TSE Technology: Zipp's TSE Technology (Total System Efficiency) was developed by its engineers in the Nest Advanced Development Lab in Indy. This approach to carbon-wheel manufacturing means the wheel's precise rim layup results in greater all-around efficiency for greater speed through reduced: Wind resistance, rolling resistance and gravity (weight + durability) vibration losses.Manufacturer's Part Number: ZPWH8612000Buy Zipp Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Zipp 353 NSW Carbon TL Rear Road Disc Wheel Offering increased stiffness, strength and an overall lower weight, this road bike rear wheel features a high-quality carbon hookless rim construction for conquering the demands of modern road cycling. Developed for greater versatility and speed, it's equipped with many of Zipp's finest performance-enhancing technologies including a Sawtooth rim shape and Total System Efficiency (TSE) that offer reduced wind resistance, rolling resistance and gravity vibration losses. Coming kitted out with 45mm deep rim shape, this model delivers fantastic speed on every terrain with best-in-class aerodynamic efficiency and crosswind stability. Tubeless, Hookless Road Bike Rear WheelThe 353 NSW is Zipp's lightest tubeless wheel yet, making it a fast-puncher ready to fight its way into the breakaway. Zipp's use of a hookless (straight side) rim in the 353 NSW is integral to achieving the brand's mission of Making You Faster. With hookless, the transition between the tyre and the rim is more seamless and aerodynamic. Zipp's hookless rims have more efficient resin distribution, which results in a lighter and highly durable rear wheel. Thanks to its 25mm internal rim width, its ideal for running wider tubeless tyres at reduced air pressure for improved stability, greater comfort and fewer chances of flats or punctures.Sawtooth Rim Shape with HyperFoilsZipp's 353 NSW's Sawtooth rim shape with Hyperfoils optimises aerodynamic efficiency and crosswind stability. The Sawtooth design also allows the rim to be structurally strong but remain lightweight, which will help you snap out of corners and maintain your speed no matter the terrain. Centre Lock Disc Brake CompatibilityReady for clocking up the miles, this rear wheel is equipped with Centre Lock disc brake compatibility, so riders can enjoy powerful and consistent braking operation wherever their ride takes them. This makes the Zipp 353 NSW Carbon TL Disc Center Lock Rear 2021 a great choice of upgrade for faster, smoother and more dependable performance on your road bike.Features: Rim Material: Carbon Rim Finish: Unidirectional (UD) Fibre Rim Graphics: Impress technology Axle Size: 12x142mm Use: Road Inner Rim Width: 25mm Rim Depth: 45mm Rim Shape: Symmetrical, Sawtooth Rim Profile: Hookless, Tubeless Clincher Hub: Cognition V2Freehub Compatibility: Multiple options available to select Drive Side Spoke Length: 258mm, 266mm Non Drive Side Spoke Length: 264mm, 266mm Size: 700c Tyre Compatibility: Tubeless tyres only Brake Compatibility: Centre Lock disc brake Single or Pair: Single Lifetime warranty Weight: 675gTechnologies: Impress: Zipp has employed ImPress graphics technology on this model, which prints graphics directly on the wheel, to help allow the dimples to do what they were design to do - help control vortex shedding, the rate at which air sheds off the wheel. Managing this is crucial to stability. Sawtooth: SawTooth is the name given to Zipp NSW's patented variable depth 53/58mm rims. Developed utilising the principles of the emerging science of biomimicry, Zipp engineers began the rigorous aero development process of SawTooth utilising the wind tunnel, CFD, and real-world testing. The result is a rim shape that takes nature's most elegant design solutions and combines engineering precision to deliver a wheel that performs unlike any made before. This patented rim shape achieves something conventional aero wheels cannot; it simultaneously reduces both aerodynamic drag and side force for the ultimate in AeroBalance. Sawtooth accomplishes this with a series of patented fin-shaped Hyperfoil nodes along the inner diameter of the rim that work together with HexFin ABLC dimples for improved airflow. The result is Zipp's highest performing wheel ever released with both aero-drag reduction and reduced side force at all wind yaw angles. This is important because higher wind yaw angles are where bike handling is most affected by the wind. Hyperfoil: Hyperfoil is the name given to the individual nodes on Zipp NSW variable depth Sawtooth rims. Each of these patented structures features Zipp's HexFin ABLC dimples that help to stabilize handling in gusting wind by increasing wind vortex shedding frequency. The higher frequency vortex shedding produced by Sawtooth creates a greater number of smaller, less powerful, yet more predictable vortices leading to greater wheel stability. This added stability translates into greater rider control, thereby saving energy that is typically expended trying to hold a line in gusting wind. The result is a faster, more confident riding experience whether you are laying down power or descending sinuous mountain roads.Hexfin ABLC: HexFin ABLC dimples are the hexagonally shaped depressions found at each Hyperfoil of our Sawtooth shaped NSW rims. The angular shape of each dimple increases boundary layer mixing to help keep airflow attached to the rim for reduced aerodynamic drag and improved stability in crosswinds. To further improve the effectiveness of the hexagonal dimples, they are arranged in fin-shaped clusters made up of variable sized dimples that work in concert with each Hyperfoil of a Sawtooth rim.Axial Clutch: With Cognition's Axial Clutch technology, Zipp reduced drag by disengaging the ratchet mechanism when coasting. With less internal hub drag a rider can pedal less when drafting in a headwind, achieve higher speeds when coasting in an aero tuck, or opt to stop pedalling a moment sooner before entering a corner and bank that wattage for use exiting the corner. Axial Clutch technology also allows riders to maintain speed through corners that don't require braking input, thereby increasing corner exit speeds. Inside the Axial Clutch mechanism Zipp use magnets, rather than steel springs, to move and engage the lightweight Metal Injection Molded (MIM) ratchet rings for unmatched reliability and consistent operation. With 36 points of engagement that all interlock simultaneously, there isn't a more secure freehub mechanism on the market. TSE Technology: Zipp's TSE Technology (Total System Efficiency) was developed by its engineers in the Nest Advanced Development Lab in Indy. This approach to carbon-wheel manufacturing means the wheel's precise rim layup results in greater all-around efficiency for greater speed through reduced: Wind resistance, rolling resistance and gravity (weight + durability) vibration losses.Manufacturer's Part Numbers: Shimano HG 10/11 speed: ZPWH8613000 SRAM XD 10/11/12 speed: ZPWH8613001Buy Zipp Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Zipp 353 NSW Carbon TL Rear Road Disc Wheel Offering increased stiffness, strength and an overall lower weight, this road bike rear wheel features a high-quality carbon hookless rim construction for conquering the demands of modern road cycling. Developed for greater versatility and speed, it's equipped with many of Zipp's finest performance-enhancing technologies including a Sawtooth rim shape and Total System Efficiency (TSE) that offer reduced wind resistance, rolling resistance and gravity vibration losses. Coming kitted out with 45mm deep rim shape, this model delivers fantastic speed on every terrain with best-in-class aerodynamic efficiency and crosswind stability. Tubeless, Hookless Road Bike Rear WheelThe 353 NSW is Zipp's lightest tubeless wheel yet, making it a fast-puncher ready to fight its way into the breakaway. Zipp's use of a hookless (straight side) rim in the 353 NSW is integral to achieving the brand's mission of Making You Faster. With hookless, the transition between the tyre and the rim is more seamless and aerodynamic. Zipp's hookless rims have more efficient resin distribution, which results in a lighter and highly durable rear wheel. Thanks to its 25mm internal rim width, its ideal for running wider tubeless tyres at reduced air pressure for improved stability, greater comfort and fewer chances of flats or punctures.Sawtooth Rim Shape with HyperFoilsZipp's 353 NSW's Sawtooth rim shape with Hyperfoils optimises aerodynamic efficiency and crosswind stability. The Sawtooth design also allows the rim to be structurally strong but remain lightweight, which will help you snap out of corners and maintain your speed no matter the terrain. Centre Lock Disc Brake CompatibilityReady for clocking up the miles, this rear wheel is equipped with Centre Lock disc brake compatibility, so riders can enjoy powerful and consistent braking operation wherever their ride takes them. This makes the Zipp 353 NSW Carbon TL Disc Center Lock Rear 2021 a great choice of upgrade for faster, smoother and more dependable performance on your road bike.Features: Rim Material: Carbon Rim Finish: Unidirectional (UD) Fibre Rim Graphics: Impress technology Axle Size: 12x142mm Use: Road Inner Rim Width: 25mm Rim Depth: 45mm Rim Shape: Symmetrical, Sawtooth Rim Profile: Hookless, Tubeless Clincher Hub: Cognition V2Freehub Compatibility: Multiple options available to select Drive Side Spoke Length: 258mm, 266mm Non Drive Side Spoke Length: 264mm, 266mm Size: 700c Tyre Compatibility: Tubeless tyres only Brake Compatibility: Centre Lock disc brake Single or Pair: Single Lifetime warranty Weight: 675gTechnologies: Impress: Zipp has employed ImPress graphics technology on this model, which prints graphics directly on the wheel, to help allow the dimples to do what they were design to do - help control vortex shedding, the rate at which air sheds off the wheel. Managing this is crucial to stability. Sawtooth: SawTooth is the name given to Zipp NSW's patented variable depth 53/58mm rims. Developed utilising the principles of the emerging science of biomimicry, Zipp engineers began the rigorous aero development process of SawTooth utilising the wind tunnel, CFD, and real-world testing. The result is a rim shape that takes nature's most elegant design solutions and combines engineering precision to deliver a wheel that performs unlike any made before. This patented rim shape achieves something conventional aero wheels cannot; it simultaneously reduces both aerodynamic drag and side force for the ultimate in AeroBalance. Sawtooth accomplishes this with a series of patented fin-shaped Hyperfoil nodes along the inner diameter of the rim that work together with HexFin ABLC dimples for improved airflow. The result is Zipp's highest performing wheel ever released with both aero-drag reduction and reduced side force at all wind yaw angles. This is important because higher wind yaw angles are where bike handling is most affected by the wind. Hyperfoil: Hyperfoil is the name given to the individual nodes on Zipp NSW variable depth Sawtooth rims. Each of these patented structures features Zipp's HexFin ABLC dimples that help to stabilize handling in gusting wind by increasing wind vortex shedding frequency. The higher frequency vortex shedding produced by Sawtooth creates a greater number of smaller, less powerful, yet more predictable vortices leading to greater wheel stability. This added stability translates into greater rider control, thereby saving energy that is typically expended trying to hold a line in gusting wind. The result is a faster, more confident riding experience whether you are laying down power or descending sinuous mountain roads.Hexfin ABLC: HexFin ABLC dimples are the hexagonally shaped depressions found at each Hyperfoil of our Sawtooth shaped NSW rims. The angular shape of each dimple increases boundary layer mixing to help keep airflow attached to the rim for reduced aerodynamic drag and improved stability in crosswinds. To further improve the effectiveness of the hexagonal dimples, they are arranged in fin-shaped clusters made up of variable sized dimples that work in concert with each Hyperfoil of a Sawtooth rim.Axial Clutch: With Cognition's Axial Clutch technology, Zipp reduced drag by disengaging the ratchet mechanism when coasting. With less internal hub drag a rider can pedal less when drafting in a headwind, achieve higher speeds when coasting in an aero tuck, or opt to stop pedalling a moment sooner before entering a corner and bank that wattage for use exiting the corner. Axial Clutch technology also allows riders to maintain speed through corners that don't require braking input, thereby increasing corner exit speeds. Inside the Axial Clutch mechanism Zipp use magnets, rather than steel springs, to move and engage the lightweight Metal Injection Molded (MIM) ratchet rings for unmatched reliability and consistent operation. With 36 points of engagement that all interlock simultaneously, there isn't a more secure freehub mechanism on the market. TSE Technology: Zipp's TSE Technology (Total System Efficiency) was developed by its engineers in the Nest Advanced Development Lab in Indy. This approach to carbon-wheel manufacturing means the wheel's precise rim layup results in greater all-around efficiency for greater speed through reduced: Wind resistance, rolling resistance and gravity (weight + durability) vibration losses.Manufacturer's Part Numbers: Shimano HG 10/11 speed: ZPWH8613000 SRAM XD 10/11/12 speed: ZPWH8613001Buy Zipp Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.