X01 Eagle is the drivetrain for riders and racers who push for the purpose of gaining elevation. Whether having fun progressing skills or taking the win—X01 Eagle is designed and refined to support riders with the power of expanded capability. FEATURES SRAM AXS software allows for user customisation of inboard and outboard shift options System is completely water and dustproof to IP69K Ergonomic design for effortless shifting Discrete clamp MatchMaker X compatible Designed for aggressive enduro and all-mountain riding Durable design based on the mechanical X01 range Overload Clutch protection helps prevent impact damage Compatible with both wide-range 10-52t and 10-50t cassettes Derailleur battery cover improves security Finished with the XO1 Eagle colourway INCLUDES SRAM XO1 AXS rear derailleur Battery SRAM XO1 AXS controller with clamp Battery charger and cord Chain gap tool
Riders seeking a strong durable and lightweight wheelset for rugged road and gravel adventures will find this 650B/27.5 diameter wheel with wider rims a perfect choice. It makes no compromises on responsiveness durability and ease of use.The lightweight aluminum rims feature ISM4D technology which strategically removes material from the rim where it’s not needed but keeps it around the spokes where tension is applied. Double butted spokes further reduce weight and make the wheel feel more responsive. The spokes have an aero elliptical shape that can save 5 watts of energy while maintaining your speed. Super-wide rims (25mm internal) are compatible with tubeless tires up to 64mm to absorb road shocks and vibrations. You get 5cm of “tire travel” to cushion your ride and the smaller-diameter rims allow you to retain the agile handling you want with a drop-bar bike.Our UST system has been improved with a new rim bed shape that makes it easier than ever to install and change tires. Fore technology attaches the spokes to the rim without the need to drill the upper rim bed so no tape is required. No hassles no added weight. Our new Infinity hub platform optimizes spoke lacing with highly controlled tension for maximum power transfer and the Instant Drive 360 freewheel coupled with our automatic bearing preload adjustment (QRM Auto) provides fast engagement stiffness and added durability. The wheels use center lock brake rotors and are available with Shimano or SRAM XD-Road driver bodies and can convert to Campagnolo with an optional driver body. The front hub is a 12mm thru-axle that can convert to 15mm or quick release. The rear is a 12x142 and can also convert to quick release. Key benefits Traction rolling efficiency and confidence on all types of terrain Wider 650B/27.5 rims let you run larger high-volume tires and still maintain the responsive handling of a normal road bike 5cm of plush “tire travel” improves traction and comfort prevents pinch flats and lets you dial in the perfect tire pressure for the terrain UST Tubeless compatibility for lower rolling resistance Superlight and durable ISM4D rim is only 440g Patented lightweight aero spokes Automatic bearing preload (QRM Auto) requires no adjustment and guarantees long-term durability Fore drilling doesn't require the use of rim tape - 30g saved per wheel Laterally stiff and vertically compliant for a dynamic ride quality Fore technology keeps the rim upper bridge solid to make the rim stiffer 17mm axle and new hub design ID360 freewheel technology is 12mm compatible convertible to quick release (15mm axle option through axle replacement) Rims Material: Maxtal Tire: UST Tubeless and tubetype Disc brake specific profile SUP welding technology Fore tapeless tubeless technology UST tubeless technology Weight reduction: ISM 4D Internal width: 25 mm Hookless profile Height: 22 mm ETRTO size : 584x25TSS Spokes Count: 24 front and rear Nipples: Fore integrated aluminum Material: steel Shape: straight pull elliptical aero double butted (patented) Lacing: front and rear crossed 2 contactless Delivered with User guide UST valve and accessories Multifonction adjustment wrench (delivered with rear wheel) Intended use Recommended tire sizes: 28 to 64 mm (11 to 25) ASTM CATEGORY 2 : road and offroad with jumps less than 15cm For a longer longevity of the wheel Mavic recommends that the total weight supported by the wheels doesn't exceed 120kg bike included Max Pressure: see indication on wheel and tire If they differ use the lowest of the 2 Minimum and maximum allowed tyre width: see indication on wheel Maximum tyre pressure: 41bar/59PSI with a 28mm tyre - 245bar/36PSI with a 64mm tyre Hubs Axle material: aluminum Front and rear bodies: aluminum Instant Drive 360 freewheel technology Rear: Quick Release 12x142 and 12x135 compatible Front: Quick release 12x100 and 15x100 through axle compatible QRM Auto bearing preload technology Infinity hubs Compatibility Freewheel: Shimano/Sram convertible to Campagnolo ED11 N3W and XD-R with optional driver bodies Rear axle: 12mm thru axle convertible to Quick Release with optional adapters and axle replacement Front axle: 12mm thru axle easily convertible to quick release with optional adapters Convertible to 15mm with complete axle replacement Versions Disc standard: Center Lock® only Freewheel: Shimano/Sram or XD-Road Compatible Adapters and freewheel bodies 12 to 9mm front adapter for quick release (V2680301) 15mm axle (V2373501) ID360 Shimano / Sram Light freewheel body (V3850101) ID360 Campagnolo freewheel body (V3440101) ID360 XD-R freewheel body (V2580101) ID360 Shimano / Sram freewheel body (V3430101) 15mm axle (LVXXXXXX) 12 to 9mm rear adapter for quick release (V2510801 (with axle V2373401) ID360 N3W freewheel body (V4270101) Information on specified weight The weight of the wheels is announced at +/-5% in XD/XD-R and Center Lock version without quick release nor valve nor rim tape
The SRAM Quarq AXS Aero Power Meter Kit makes use of a unique direct mount aerodynamic X-SYNC chainring with an integrated Quarq Dzero power meter that improves aerodynamic performance, while providing impeccable chain retention and accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelySingle chainring design simplifies functionality and reduces weightX-SYNC chainrings provides impeccable chain retention8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksThe X-Sync chainring features a special laser-etched finish that is more durable, improving the usable life of the chainring; this isn't just for race day only. The unique X-Sync narrow-wide too profile is not only supremely efficient and durable, but it also provides impeccable chain retention. Unlike other SRAM chainrings, the Quarq AXS Power Meter uses a unique 8-bolt direct mount interface that is only compatible with SRAM Red D1 and Force D1 cranks.The integrated Quarq Dzero is cleverly packaged as part of the chainring, reducing weight and making it possible to switch the power meter between compatible Red chainsets. The power meter has a power balance feature, that measures power from left and right legs separately and is accurate within +/- 1.5%, giving a highly accurate reading to help you train and ride harder.
The SRAM Quarq AXS Aero Power Meter Kit makes use of a unique direct mount aerodynamic X-SYNC chainring with an integrated Quarq Dzero power meter that improves aerodynamic performance, while providing impeccable chain retention and accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelySingle chainring design simplifies functionality and reduces weightX-SYNC chainrings provides impeccable chain retention8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksThe X-Sync chainring features a special laser-etched finish that is more durable, improving the usable life of the chainring; this isn't just for race day only. The unique X-Sync narrow-wide too profile is not only supremely efficient and durable, but it also provides impeccable chain retention. Unlike other SRAM chainrings, the Quarq AXS Power Meter uses a unique 8-bolt direct mount interface that is only compatible with SRAM Red D1 and Force D1 cranks.The integrated Quarq Dzero is cleverly packaged as part of the chainring, reducing weight and making it possible to switch the power meter between compatible Red chainsets. The power meter has a power balance feature, that measures power from left and right legs separately and is accurate within +/- 1.5%, giving a highly accurate reading to help you train and ride harder.
The SRAM Quarq AXS Aero Power Meter Kit makes use of a unique direct mount aerodynamic X-SYNC chainring with an integrated Quarq Dzero power meter that improves aerodynamic performance, while providing impeccable chain retention and accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelySingle chainring design simplifies functionality and reduces weightX-SYNC chainrings provides impeccable chain retention8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksThe X-Sync chainring features a special laser-etched finish that is more durable, improving the usable life of the chainring; this isn't just for race day only. The unique X-Sync narrow-wide too profile is not only supremely efficient and durable, but it also provides impeccable chain retention. Unlike other SRAM chainrings, the Quarq AXS Power Meter uses a unique 8-bolt direct mount interface that is only compatible with SRAM Red D1 and Force D1 cranks.The integrated Quarq Dzero is cleverly packaged as part of the chainring, reducing weight and making it possible to switch the power meter between compatible Red chainsets. The power meter has a power balance feature, that measures power from left and right legs separately and is accurate within +/- 1.5%, giving a highly accurate reading to help you train and ride harder.
The SRAM Quarq AXS Aero Power Meter Kit makes use SRAM's new X-Range gearing technology, offering smoother shifting and a wider gear range. The rings are combined with an integrated Quarq Dzero power meter that provides accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelyX-Range gearing provides more range and smoother gear progression, so you're always in the right gear8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksUsing a unique one-piece design that bolts straight to the crank arms, the X-Range rings work in conjunction with the X-Range XG-1290 and XG-1270 cassettes to provide a wider gear range and smoother progression between gears, meaning you'll always be in the right gear. The unique 10t start of the cassettes means you can use smaller chainrings than normal while retaining a similar gear for top speed. The smaller chainrings also mean you'll have a lower bottom gear for punishing climbs. Unlike other SRAM chainrings, the Quarq AXS Power Meter uses a unique 8-bolt direct mount interface that is only compatible with SRAM Red D1 and Force D1 cranks.The integrated Quarq Dzero is cleverly packaged as part of the chainring, reducing weight and making it possible to switch the power meter between compatible Red chainsets. The power meter has a power balance feature, that measures power from left and right legs separately and is accurate within +/- 1.5%, giving a highly accurate reading to help you train and ride harder.
The SRAM Quarq AXS Aero Power Meter Kit makes use SRAM's new X-Range gearing technology, offering smoother shifting and a wider gear range. The rings are combined with an integrated Quarq Dzero power meter that provides accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelyX-Range gearing provides more range and smoother gear progression, so you're always in the right gear8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksUsing a unique one-piece design that bolts straight to the crank arms, the X-Range rings work in conjunction with the X-Range XG-1290 and XG-1270 cassettes to provide a wider gear range and smoother progression between gears, meaning you'll always be in the right gear. The unique 10t start of the cassettes means you can use smaller chainrings than normal while retaining a similar gear for top speed. The smaller chainrings also mean you'll have a lower bottom gear for punishing climbs. Unlike other SRAM chainrings, the Quarq AXS Power Meter uses a unique 8-bolt direct mount interface that is only compatible with SRAM Red D1 and Force D1 cranks.The integrated Quarq Dzero is cleverly packaged as part of the chainring, reducing weight and making it possible to switch the power meter between compatible Red chainsets. The power meter has a power balance feature, that measures power from left and right legs separately and is accurate within +/- 1.5%, giving a highly accurate reading to help you train and ride harder.
Zipp’s 404 Firecrest Tubeless Disc-brake is the icon of speed with three decades of use. The 404’s heritage as Zipp’s icon of speed extends back decades, and its future is even brighter. At 58mm deep, the 404 Firecrest Tubeless is ideal for road races, time trial and triathlon, and gran fondos. The wheelset’s 23mm internal width is perfect for running wider tubeless tires at reduced air pressure. That is a vital component of Total System Efficiency, or TSE, an approach to speed on ever-changing roads and riding conditions. Specifically, TSE focuses on overcoming specific barriers to speed: wind resistance, gravity, rolling resistance, and vibration losses. Zipp’s ABLC Sawtooth Technology uses an intricate dimpling pattern to improve aero efficiency. Zipp’s use of hookless (straight side) rims in the 404 Firecrest is integral to Making You Faster. With hookless, the transition between the tire and the rim is more seamless and aero. Zipp’s hookless rims have more efficient resin distribution, which means lighter, stronger wheels. Outdoor testing commissioned by Zipp revealed the real-world gains of Zipp TSE. A bike- and-rider system weighing 85kg (187lbs) on the new 404 Firecrest with 25mm tires required 286 watts to maintain a speed of 40kph. That’s a 4-watt savings compared with the previous model 404 Firecrest. At the center of the 404 Firecrest Tubeless Disc-brake is a versatile and durable hubset, the German-engineered ZR1 DB. If you had to choose just one wheel for road riding and racing, the 404 Firecrest Tubeless Disc brake is a savvy and speedy choice. Technology: Total System Efficiency ABLC Dimples Features: Versatile race wheelset for the modern road race bike with tubeless and hookless rim profile Optimized tire bed for easy tire installation Wide 23mm rim profile creates a better tire interface to be fast on or off the road New ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement Ships with 12mm front and rear end caps Center locking rotor interface. Lockring is included with the wheels XDR or SRAM/Shimano driver bodies Campagnolo driver body sold separately The 404 Firecrest Tubeless Disc-brake is about 370 grams lighter than its predecessor 1450g wheelset* Front 660g Rear 790g Lifetime Warranty *Lightest configuration: 12mm through axles and XDR body. No tape or valve included in weight
Zipp’s 303 Firecrest® Tubeless Disc-brake wheelset is designed for the real world… a world of imperfect conditions, road surfaces, and elements where the bottom line is simple. Efficiency = speed. It’s faster, lighter, and more capable over varied terrain—whether the surface is pavement in all its conditions or no pavement at all. Deeply rooted in Zipp’s drive to conquer the Spring Classics, the new 303 Firecrest is remade with a purpose-made approach for the demands of modern road bikes. When it comes to going fast on a bicycle, efficiency means reduced: Wind resistance, rolling resistance, rider fatigue, weight. The 303 Firecrest Tubeless Disc-brake was designed using real-world direct measurements (vs. primarily wind tunnel or computer simulation). The results were huge. Its rim is slightly more bulbous in design than its predecessor, with a 32mm outside width, a 25mm internal width, and a 40mm rim depth. The profile provides low drag and an improved transition between rim and tire, boosting aero efficiency on the road. The wide rim stance also features less tire deflection for reduced rolling resistance. The combination of the wider tire, increased tire volume, and lower tire pressure helps to reduce rider fatigue by smoothing out the ride over imperfect pavement and road conditions—the tire and wheel system absorbs the shaking, not the rider. At the center of the 303 Firecrest Tubeless Disc brake is a versatile and durable new hubset, the German-engineered ZR1 DB. This hubset features 66 points of engagement for quicker response. The 303 Firecrest Tubeless Disc-brake wheelset is for dedicated cyclists who aspire to the latest in technology. Its competitors… in races, against peers, or simply conquering personal limits. This is about becoming faster and matching your motivation to the most advanced technology. Features: New Zipp graphics and cosmetic identity that scream speed Versatile endurance wheelset for the modern road bike with tubeless and hookless rim profile Lighter Weight than its predecessor, making it nimble and fast. Tubeless Made Easy, optimized tire bed sign allows for simple tool-free installation and removal with no need for an air compressor to seat the tire. Ultra-wide 25mm rim profile creates a better tire interface to be fast on or off the road New 40mm rim depth makes a light and aero wheel in every situation New ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement Ships with 12mm front and rear end caps Center locking rotor interface. Lockring is included with the wheels XDR™ or SRAM/Shimano driver bodies Campagnolo driver body sold separately
Zipp 303 Firecrest Carbon Tubeless Rear WheelEngineered to meet the demands of modern road bike adventures, this rear wheel features a hookless carbon rim construction, which allows it to deliver incredibly fast and smooth rolling performance. Zipp has equipped this model with tubeless tyre compatibility, so you can enjoy the benefits of superior stability and control as well as a lighter overall weight. Another highlight of this version is its disc brake compatibility, which means that you'll benefit from powerful and consistent braking performance during the most unpredictable of road conditions.Zipp's 303 Firecrest Tubeless Disc-brake rear wheel is designed for the real world… a world of imperfect conditions, road surfaces, and elements where the bottom line is simple. Efficiency = speed. It's faster, lighter, and more capable over varied terrain—whether the surface is pavement in all its conditions or no pavement at all. Deeply rooted in Zipp's drive to conquer the Spring Classics, the 303 Firecrest is remade with a purpose-made approach for the demands of modern road bikes. When it comes to going fast on a bicycle, efficiency means reduced: Wind resistance, rolling resistance, rider fatigue, weight. Designed using real-world direct measurements (vs. primarily wind tunnel or computer simulation). The results were huge. Its rim is slightly more bulbous in design than its predecessor, with a 30mm outside width, a 25mm internal width, and a 40mm rim depth. The profile provides low drag and an improved transition between rim and tyre, boosting aero efficiency on the road. The wide rim stance also features less tyre deflection for reduced rolling resistance. The combination of the wider tyre, increased tyre volume, and lower tyre pressure helps to reduce rider fatigue by smoothing out the ride over imperfect pavement and road conditions—the tyre and wheel system absorbs the shaking, not the rider. At the centre of the 303 Firecrest Tubeless Disc brake rear wheel is a versatile and durable hubset, the German-engineered ZR1 DB. This hubset features 66 points of engagement for quicker response. The 303 Firecrest Tubeless Disc-brake rear wheel is for dedicated cyclists who aspire to the latest in technology. Its competitors… in races, against peers, or simply conquering personal limits. This is about becoming faster and matching your motivation to the most advanced technology.Features: Rim Material: Hookless Carbon Tyre Compatibility: Tubeless tyres only Brake Compatibility: Disc (Center Lock) Rim Inside Width: 25mm Rim Profile: Symmetrical Rim Finish: UD fibre, adhesive decals Nipple Material: Aluminium Spoke Type: CX-Ray Spoke Count: 24 Spoke Pattern: 2 Cross Driver Body Type: Multiple options available to select Axle Type: TA 12x142 Bearings: Cartridge - Steel Driver Mechanism: 6 Pawls Leaf Spring Weight: 842g (approx)Technologies: Zipp graphics and cosmetic identity that scream speed Versatile endurance wheelset for the modern road bike with tubeless and hookless rim profile Lighter Weight than its predecessor, making it nimble and fast Tubeless Made Easy, optimised tyre bed sign allows for simple tool-free installation and removal with no need for an air compressor to seat the tyre Ultra-wide 25mm rim profile creates a better tyre interface to be fast on or off the road 40mm rim depth makes a light and aero wheel in every situation ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement Center locking rotor interface. Lockring is included with the wheels XDR or SRAM/Shimano driver bodies Campagnolo driver body sold separatelyBuy Zipp Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
Zipp 303 Firecrest Carbon Tubeless Rear WheelEngineered to meet the demands of modern road bike adventures, this rear wheel features a hookless carbon rim construction, which allows it to deliver incredibly fast and smooth rolling performance. Zipp has equipped this model with tubeless tyre compatibility, so you can enjoy the benefits of superior stability and control as well as a lighter overall weight. Another highlight of this version is its disc brake compatibility, which means that you'll benefit from powerful and consistent braking performance during the most unpredictable of road conditions.Zipp's 303 Firecrest Tubeless Disc-brake rear wheel is designed for the real world… a world of imperfect conditions, road surfaces, and elements where the bottom line is simple. Efficiency = speed. It's faster, lighter, and more capable over varied terrain—whether the surface is pavement in all its conditions or no pavement at all. Deeply rooted in Zipp's drive to conquer the Spring Classics, the 303 Firecrest is remade with a purpose-made approach for the demands of modern road bikes. When it comes to going fast on a bicycle, efficiency means reduced: Wind resistance, rolling resistance, rider fatigue, weight. Designed using real-world direct measurements (vs. primarily wind tunnel or computer simulation). The results were huge. Its rim is slightly more bulbous in design than its predecessor, with a 30mm outside width, a 25mm internal width, and a 40mm rim depth. The profile provides low drag and an improved transition between rim and tyre, boosting aero efficiency on the road. The wide rim stance also features less tyre deflection for reduced rolling resistance. The combination of the wider tyre, increased tyre volume, and lower tyre pressure helps to reduce rider fatigue by smoothing out the ride over imperfect pavement and road conditions—the tyre and wheel system absorbs the shaking, not the rider. At the centre of the 303 Firecrest Tubeless Disc brake rear wheel is a versatile and durable hubset, the German-engineered ZR1 DB. This hubset features 66 points of engagement for quicker response. The 303 Firecrest Tubeless Disc-brake rear wheel is for dedicated cyclists who aspire to the latest in technology. Its competitors… in races, against peers, or simply conquering personal limits. This is about becoming faster and matching your motivation to the most advanced technology.Features: Rim Material: Hookless Carbon Tyre Compatibility: Tubeless tyres only Brake Compatibility: Disc (Center Lock) Rim Inside Width: 25mm Rim Profile: Symmetrical Rim Finish: UD fibre, adhesive decals Nipple Material: Aluminium Spoke Type: CX-Ray Spoke Count: 24 Spoke Pattern: 2 Cross Driver Body Type: Multiple options available to select Axle Type: TA 12x142 Bearings: Cartridge - Steel Driver Mechanism: 6 Pawls Leaf Spring Weight: 842g (approx)Technologies: Zipp graphics and cosmetic identity that scream speed Versatile endurance wheelset for the modern road bike with tubeless and hookless rim profile Lighter Weight than its predecessor, making it nimble and fast Tubeless Made Easy, optimised tyre bed sign allows for simple tool-free installation and removal with no need for an air compressor to seat the tyre Ultra-wide 25mm rim profile creates a better tyre interface to be fast on or off the road 40mm rim depth makes a light and aero wheel in every situation ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement Center locking rotor interface. Lockring is included with the wheels XDR or SRAM/Shimano driver bodies Campagnolo driver body sold separatelyBuy Zipp Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM AXS Aero Powermeter Kit Offering simplicity, strength and durability, this chainring powermeter kit meets the demands of competing time trial and triathlon riders. It features a robust aluminium construction that's also CNC-machined, so riders can benefit from its fantastic strength to weight ratio on every training session. SRAM has integrated the powermeter into this direct mount chainring, so you can enjoy its tighter gearing range that's perfect for racing and areas with flatter terrain. Coming equipped with Quarq DZero power measurement, you'll also enjoy its accurate readings within +/-1.5% that aren't affected by climate conditions during a ride.- AXS enabled for easy monitoring and firmware upgrades- Single-ring drivetrain simplifies functionality- Fully integrated power meter into a direct mount aero chainring- Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride- Power balance measures left and right legs separately- SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control- Laser-etched chainring finish is more durable- 8-bolt direct mount compatibility only to new RED and Force eTap AXS cranksFeatures: Material: CNC-machined Aluminium Use: Road, Time Trial, Triathlon Speed: 12 speed Type: Integrated Chainring Powermeter BCD: Direct Mount Chain line: 45mm Accuracy: +/- 1.5% Chainring Size: Multiple options available to select Connectivity: ANT+, BluetoothTechnologies: AXS: AXS is SRAM's bike component integration system that connects electronic bicycle components and software. This SRAM AXS app allows riders to see battery status, change component behaviour, personalise controls, get maintenance reminders and update firmware. X-SYNC: SRAM X-SYNC chain rings provide the highest level of performance and durability. The SRAM X-SYNC tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC chain rings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNC rings are an integral part of the SRAM 1x drivetrain. DZERO: The Quarq platform for powermeters, DZero, is certified according to the DZero experiment, one of the most accurate and innovative Projects of science to study subatomic particles moving at the speed of light. With a new measuring circuit, a revised DMSDesign, improved accuracy throughout the entire Pedal rotation and software progress represented DZero represents the state of the art in power measurement technology.Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.