SRAM XX1 Eagle AXS 12sp Rear DerailleurFeaturing a strong carbon cage construction and steel pulley bearings, this high-quality mountain bike (MTB) rear derailleur is designed to handle the demands that are associated with modern cross country (XC) and mountain bike (MTB) trail-riding. Thanks to its wireless AXS enabled technology, riders also will benefit from easy personalisation and control wherever their ride takes them. Coming equipped with SRAM's finest technologies including Cage Lock, Overload Clutch Protection, X-Horizon and X-SYNC, this is a great choice of upgrade for riders who want the highest level of performance and durability.Rear Derailleur with AXS Wireless ConnectivityMore than a mechanical derailleur with a battery and a motor bolted on, the Eagle AXS derailleur is the heart of the whole AXS system. It features a shorter cage for 10mm more ground clearance, with more chain wrap on the cassette to sit slightly further forward, and further inboard from mechanical Eagle. Instantaneous shifts from a single touch even while under World Cup-winning chain loads recorded in the heat of racing and affirmed in the test lab. Tested to IP69K water and dust proofing standard, so whatever race day brings, you’re ready.Features: Cage Material: Carbon Hardware Material: Titanium Pulley Bearing Material: Steel Use: XC, MTB Speed: 12 speed Max Tooth: 52T Battery Included: No, available separately XC focus and trail-ready Rainbow colourway Eagle technology Overload Clutch protection System is completely water and dust proof to IPX7 AXS enabled componentry software that makes it possible to both program and personalise new SRAM and RockShox componentsTechnologies: Cage Lock: With Cage Lock technology in the rear derailleur, wheel removal and installation as well as chain installation becomes faster and simpler. Just push the cage forward to create slack and lock it into place. Roller Bearing Clutch: Roller Bearing Clutch technology eliminates derailleur bounce and chain slap without sacrificing precision. X-Horizon: This rear derailleur’s “straight parallelogram” design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. For quicker, more exact shifting, the large upper pulley offset design maintains a constant chain gap across all gears. X-SYNC: SRAM X-SYNC 1x chainrings 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 chainrings 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. Accept no imitation. Chainrings sold separately. Eagle: Eagle technology represents SRAM's updated 1x drivetrain technology. Eagle is a lighter, simpler, more durable, and easier to use drivetrain. Eagle features revised 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 520%, which is equal to 2x11 drivetrains. AXS: AXS is SRAM’s bike component integration system that connects electronic bicycle components and software. The SRAM AXS app allows riders to see battery status, change component behaviour, personalise controls, get maintenance reminders, and update firmware.Manufacturer's Part Number: 00.7518.125.000Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM Universal Derailleur HangerIf you’ve ever snapped a gear hanger in the woods you know how infuriating it can be, so SRAM brings you its pivoting Universal Derailleur Hanger (UDH), which is compatible with a wide range of bike frames and all major drivetrain brands. The pivoting design of this rear mechanism hanger rotates slightly in the event of a sudden impact, protecting your expensive shifting component. It then enables you to position your chain on to your smallest cog so you can get rolling again in no time.Features: Material: Aluminium Compatibility: Many frame brands/models and SRAM, Shimano, Box and Sunrace rear derailleurs Use: Mountain Bike (MTB), electric mountain bike (E-MTB) Protects against chain jams Improves shifting performance Guarantees better alignment Consolidates thousands of mountain bike derailleur standards Offers unparalleled derailleur protection and perfect alignment Rotates rearward on impact and features the ability to “re-rail” the chain back onto the small cog Part Number: AC-DRHG-MTB-A1Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM X01 Eagle AXS 12 Speed Rear DerailleurThis off-road rear mech can be used for MTB or enduro riding as it features a hard-wearing forged aluminium and stainless-steel construction, that's more than capable of handling all the abuse that's associated with long days on the trails. SRAM has packed this model with its finest technologies such as Overload Clutch protection, where in the event of an impact, the motor gearbox disengages, giving the derailleur freedom to move, and instantly returns back to its position for a seamless experience for the rider.SRAM has also equipped this trail-ready rear mech with its renowned AXS technology. AXS lets you connect your AXS-enabled components to a mobile app, where you can assign custom actions to your controls. Everything speaks the same language, and you can even combine road and mountain bike parts to build the bike of your dreams.Part of the top-level Eagle series, this MTB rear derailleur is a lighter, simpler, more durable, and easier to use model. Eagle features 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 500%, while is equal to 2x11 drivetrains. - Eagle technology - Overload Clutch protection - AXS enabled componentry software that makes it possible to both program and personalise SRAM and RockShox components - System is completely water and dust proof to IP69K- Battery sold separatelyIt's a MTB derailleur that's specifically designed and optimized to be motor-driven instead of cable-actuated. AXS powered components enable customization and scale to an individual rider's liking via the AXS App. It features a shorter cage for 10mm more ground clearance, with more chain wrap on the cassette to sit slightly further forward, and further inboard from mechanical Eagle. The Eagle AXS derailleur is smart enough to protect itself thanks to its incredibly resilient Overload Clutch. In the event of an impact, the motor gearbox disengages, giving the derailleur freedom to move, and instantly returns back to its position for a seamless experience for the rider. The system is tested to IP69K water and dust proofing standard for creek crossings, mud splatterings and the resulting post-ride pressure washings. Features: Material: Cage: Forged Aluminum; Pulley Bearings: Steel; Hardware: Stainless Steel Use: MTB, Enduro Speed: 12 speed Max Tooth: 52 Mount: Standard Single or Pair: Single Type: Rear derailleur Part Numbers: Lunar: RD8126001; Red: RD8126002Technologies: AXS: When SRAM launched the original RED eTap in 2015, one of its most exciting features was that it was wireless. Now, we've taken eTap wireless to the next level with AXS. AXS is SRAM's bike component integration system that connects electronic bicycle components and software. AXS lets you connect your AXS-enabled components to a mobile app, where you can assign custom actions to your controls. Everything speaks the same language, and you can even combine road and mountain bike parts to build the party bike of your dreams. Wireless controls open the door to new levels of customization. With AXS, you can personalize your component behavior to match your riding style and preferences. Turn on enhanced shifting modes, or reassign shifting actions. The AXP Mobile App and AXS Web allow you to monitor your bike's performance and readiness. It's an easy way to keep tabs on your battery levels—including the CR2032 batteries in eTap shift levers—and keep AXS component firmware up-to-date. AXS Web analyzes your ride files specific to shifting, gear use, power zones, and tyre pressure, so that you can quickly and easily learn more about how your bike is working for you and consider adjustments. Cage Lock: With Cage Lock technology in the rear derailleur, wheel removal and installation - as well as chain installation - becomes faster and simpler. Just push the cage forward to create slack and lock it into place. Overload Clutch Protection: The Eagle AXS derailleur is smart enough to protect itself thanks to its incredibly resilient Overload Clutch. In the event of an impact, the motor gearbox disengages, giving the derailleur freedom to move, and instantly returns back to its position for a seamless experience for the rider. The primary purpose of the Overload Clutch is to protect the derailleur shift motor, but it serves to protect your derailleur and derailleur hanger from damage as a by-product. A very helpful by-product. Horizon: This rear derailleur's "straight parallelogram" design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. For quicker, more exact shifting, the large upper pulley offset design maintains a constant chain hap across all gears. X-Sync: SRAM X-Sync 1X 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. Eagle: Eagle technology represents our newest 1x drivetrain technology. Eagle is a lighter, simpler, more durable, and easier to use drivetrain. Eagle features all-new 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 500%, while is equal to 2x11 drivetrains. Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM X01 Eagle 12 Sp Rear DerailleurThis rear MTB derailleur features a rock-solid aluminium inner and outer construction, which makes it ideal at handling all the abuse that's associated with all-day epics in the mountains. SRAM has also equipped this top-tier Eagle series model with some of their finest technology, so you can benefit from faster and smoother shifting performance on your mountain bike. One final highlight is its updated cage design that provides superior chain retention and more precise shifts as you weave between the trails at speed.- Updated cage provides better chain retention and more precise shifts- Comes in X01 Eagle master colourway as part of Eagle Coloursystem - to go with all cassette and chain colour options- Backwards compatible, works with 10-50t and new 10-52t cassettesElevating the shift, expanding the capable, the X01 Eagle derailleur features an updated cage architecture, to provide better chain management than ever. The X01 Eagle rear derailleur works with the new 10-52t cassettes and is backwards compatible to also work with 10-50t options. As part of the new Eagle Coloursystem, it comes in X01 Eagle master colourway to go perfectly with any colour cassette and chain a rider wants.Features: Material: Aluminium Use: MTB Speed: 12 speed Mount: Standard Cable Pull Ratio: X-Actuation Max Tooth: 52 Type: Rear derailleur Part Number: Red: RD8138000; Lunar: RD8138001Technologies: X-Actuation: Developed specifically for SRAM 1x, X-ACTUATION keeps shifting sharp and consistent across the entire cassette. Eagle: Eagle technology represents our newest 1x drivetrain technology. Eagle is a lighter, simpler, more durable, and easier to use drivetrain. Eagle features all-new 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 500%, while is equal to 2x11 drivetrains. Cage Lock: With Cage Lock technology in the rear derailleur, wheel removal and installation - as well as chain installation - becomes faster and simpler. Just push the cage forward to create slack and lock it into place.Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM X01 Eagle 12 Sp Rear DerailleurThis rear MTB derailleur features a rock-solid aluminium inner and outer construction, which makes it ideal at handling all the abuse that's associated with all-day epics in the mountains. SRAM has also equipped this top-tier Eagle series model with some of their finest technology, so you can benefit from faster and smoother shifting performance on your mountain bike. One final highlight is its updated cage design that provides superior chain retention and more precise shifts as you weave between the trails at speed.- Updated cage provides better chain retention and more precise shifts- Comes in X01 Eagle master colourway as part of Eagle Coloursystem - to go with all cassette and chain colour options- Backwards compatible, works with 10-50t and new 10-52t cassettesElevating the shift, expanding the capable, the X01 Eagle derailleur features an updated cage architecture, to provide better chain management than ever. The X01 Eagle rear derailleur works with the new 10-52t cassettes and is backwards compatible to also work with 10-50t options. As part of the new Eagle Coloursystem, it comes in X01 Eagle master colourway to go perfectly with any colour cassette and chain a rider wants.Features: Material: Aluminium Use: MTB Speed: 12 speed Mount: Standard Cable Pull Ratio: X-Actuation Max Tooth: 52 Type: Rear derailleur Part Number: Red: RD8138000; Lunar: RD8138001Technologies: X-Actuation: Developed specifically for SRAM 1x, X-ACTUATION keeps shifting sharp and consistent across the entire cassette. Eagle: Eagle technology represents our newest 1x drivetrain technology. Eagle is a lighter, simpler, more durable, and easier to use drivetrain. Eagle features all-new 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 500%, while is equal to 2x11 drivetrains. Cage Lock: With Cage Lock technology in the rear derailleur, wheel removal and installation - as well as chain installation - becomes faster and simpler. Just push the cage forward to create slack and lock it into place.Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM XX1 Eagle 12 Sp Rear DerailleurWhether you're competing in a cross-country event or shredding the MTB trails for leisure, this rear mech is engineered for fast and smooth operation. It features a carbon outer cage and a tough aluminium inner cage, which allows you to enjoy its fantastic durability, without sacrificing any weight. SRAM has also equipped this model with updated cage geometry that offers superior chain retention as well as crisper shifting. Another highlight is its backwards compatibility with 10-50T and more recent 10-52T cassettes.- Updated cage geometry provides better chain retention and crisper shifting- Comes in XX1 Eagle master colourway as part of Eagle Colour system - to go with all cassette and chain colour options- Backwards compatible, works with 10-50T and new 10-52T cassettesFeatures: Material: Outer Cage: Carbon; Inner Cage: Aluminium Use: MTB, Cross-Country Speed: 12 speed Type: Rear derailleur Max Tooth: 52T Mount: Standard Cable Pull Ratio: X-Actuation Single or Pair: SinglePart Number: RD8139000Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM GX Eagle 12 Sp Rear DerailleurBringing you the versatility, toughness and slick shifting you need for dominating your local trails, the GX Eagle rear mechanism brings 12-Speed compatibility to your mountain bike (MTB) at a more wallet-friendly price point. Built to handle the roughest trails, SRAM has added steel bearings into the pulley wheels for a smooth performance that lasts. Plus, its long cage design means it works with 10-50 and 10-52 tooth cassettes, giving you the range to ride efficiently in any situation. SRAM has also updated the design of the cage to give you increased chain retention and faster shifts as you blast your way through the forest.Finished with the GX Eagle™ master colourway, it compliments any cassette and chain colourway a rider wants from the Eagle™ Colour system. Further proof that the GX Eagle™ derailleur is there for one thing - to do the job.Features:Material: Cage: Aluminium; Pulley Bearings: SteelSpeed: 12-SpeedUse: All-Mountain (AM), Cross Country (XC) and EnduroMount: Standard hanger mountCage Type: LongMax Tooth: 52TCable Pull Ratio: X-ActuationClutch Type: YesBackwards compatible, works with both 10-50T and 10-52T cassettesUpdated cage architecture provides better chain retention and precise shiftsPart of Eagle™ Colour system and goes with all colours of Eagle cassettes & chainsManufacturer's Part Number: RD-GX-1-B2Weight: 680gBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM Rival eTap AXS 12 Speed Rear DerailleurBenefitting from wireless electronic eTap shift logic, this 12 speed rear derailleur provides intuitive shifting, easy setup and reliability on your road bike. SRAM has also equipped this model with a rock-solid aluminium cage with steel pulley bearings, so you'll benefit from the best balance of strength, durability and performance on every mile of road. SRAM AXS Enabled Road Bike Rear DerailleurThis rear derailleur is low on complexity, but rich with features. SRAM has equipped it with its renowned AXS wireless technology, which allows for easy personalisation and control on your road bike. Thanks to its eTap shift logic, it delivers intuitive shifting, easy setup and reliability that has been proven at the highest levels. AXS technology means personalisation is in your hands.The precision and reliability of 12-speed eTap AXS, now at a whole new level. On any surface you can imagine, in any drivetrain configuration, the Rival eTap AXS rear derailleur will handle it. Secure chain management and fast, precise shifting make for a smooth and quiet ride, every time.- Wireless electronic eTap shift logic for intuitive shifting, easy setup and reliability- Compatible with both 1x and 2x drivetrains- 36t cog max derailleur works with 10-28, 10-30, 10-33, and 10-36 cassettes- SRAM AXS enabled, allowing easy personalisation- Chain management keeps the drivetrain quiet and secure- X-SYNC pulleys for increased durability and efficiencyFeatures: Cage Material: Aluminium Pulley Bearings Material: Steel Use: Road Speed: 12 speed Cage: Medium cage Max Tooth: 36 Battery Included: Not included, battery available separatelyTechnologies: AXS Enabled: AXS is SRAM's bike component integration system that connects electronic bicycle components and software. Control: AXS lets you connect your AXS-enabled components to a mobile app, where you can assign custom actions to your controls. Everything speaks the same language, and you can even combine road and mountain bike parts to build the party bike of your dreams. Personalise: Wireless controls open the door to new levels of customisation. With AXS, you can personalise your component behavior to match your riding style and preferences. Turn on enhanced shifting modes, or reassign shifting actions. Measure: The AXP Mobile App and AXS Web allow you to monitor your bike's performance and readiness. It's an easy way to keep tabs on your battery levels—including the CR2032 batteries in eTap shift levers—and keep AXS component firmware up-to-date. AXS Web analyses your ride files specific to shifting, gear use, power zones, and tyre pressure, so that you can quickly and easily learn more about how your bike is working for you and consider adjustments.Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM Rival eTap AXS 2x12 Front DerailleurDelivering crisp, accurate front shifting operation, this front derailleur benefits from wireless electronic eTap shift logic for a more rider-tuned experience on your road bike. Thanks to its eTap shift logic, it delivers intuitive shifting, easy setup and reliability that has been proven at the highest levels. Low on complexity, but rich with features, it's equipped with SRAM's renowned AXS wireless technology that allows for easy personalisation and control. AXS technology means personalisation is in your hands.X-Range Optimised and Yaw TechnologyDue to today's drop bar bikes being faster and more capable than ever before, riders want a shifting set-up with wide-range gearing to match their wide range of cycling pursuits. But, as the range is only half of the equation, they also want a drivetrain that offers the right gear for any situation. This front derailleur is optimised for use with X-Range chainrings, so riders can enjoy fewer, faster front shifts, which makes it easier for you to find the right gear and offers a distinct performance advantage in comparison to traditional drivetrains.SRAM has also equipped this model with Yaw technology, where the front derailleur cage rotates to maintain a consistent angular relationship with your chain while eliminating the need for shifter trim. As a result, shifts feel more direct and precise, delivering an unmatched performance advantage in front shifting.SRAM AXS Enabled Road Bike Front DerailleurThe precision and reliability of eTap AXS, now at a whole new level. The Rival eTap AXS front derailleur is optimised for X-Range chainrings and uses Yaw technology so there's no need for trim. Never miss a shift.- Wireless electronic eTap shift logic for intuitive shifting, easy setup and reliability- AXS enabled for easy personalisation- Crisp and accurate front shifts- SRAM Yaw trimless cage technology optimised for use with 46/33 or 48/35 X-Range chainrings- Designed for standard chainline eTap AXS cranksPlease note: A battery and charger are available to purchase separately for this product.Features: Use: Road Speed: 2x12 speed Compatible Chainring: Road-Yaw Mount Type: Braze-on Cable Routing: Wireless Chainstay Angle: 61-66 degrees Not Included: Battery and charger are available to purchase separatelyTechnologies: AXS Enabled: AXS is SRAM's bike component integration system that connects electronic bicycle components and software. Control: AXS lets you connect your AXS-enabled components to a mobile app, where you can assign custom actions to your controls. Everything speaks the same language, and you can even combine road and mountain bike parts to build the party bike of your dreams. Personalise: Wireless controls open the door to new levels of customisation. With AXS, you can personalise your component behavior to match your riding style and preferences. Turn on enhanced shifting modes, or reassign shifting actions. Measure: The AXP Mobile App and AXS Web allow you to monitor your bike's performance and readiness. It's an easy way to keep tabs on your battery levels—including the CR2032 batteries in eTap shift levers—and keep AXS component firmware up-to-date. AXS Web analyses your ride files specific to shifting, gear use, power zones, and tyre pressure, so that you can quickly and easily learn more about how your bike is working for you and consider adjustments. Yaw: With a front derailleur cage that rotates to maintain a consistent angular relationship with the chain, Yaw technology eliminates the need for shifter trim. As a result, shifts feel more direct and precise, delivering an unmatched performance advantage in front shifting.Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM Eagle AXS Rear Derailleur Battery CoverKeeping your SRAM AXS rear derailleur safe on demanding mountain bike (MTB) rides, the SRAM Eagle AXS Rear Derailleur Battery Cover provides secure protection wherever your next adventure takes you. It features a lightweight cowling that's specifically designed to protect your battery while installed on your SRAM AXS rear derailleur. The AXS Battery Cover fits all AXS mountain bike derailleurs.Features: Use: MTB Speed: 12 speed Compatibility: Battery Protector for Eagle AXS Rear Derailleurs Genuine SRAM spare partBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM GX Eagle AXS 12 Speed Rear DerailleurThis 12 speed mountain bike (MTB) rear derailleur is part of SRAM's high-performance AXS ecosystem, which offers faster, more consistent operation, and lets you shift when you want, even under load, without having to plan around the terrain. It also features a tough steel construction, which makes it more than ready to tackle whatever the mountain terrain has to offer. Wireless Electronic ShiftingDeveloped for use with the GX Eagle AXS range, this model boasts many of the features that you would expect from the Eagle ecosystem such as 520% range, mix and match compatibility and the ability to customise your set-up using the SRAM AXS app. Its AXS enabled componentry software and AXS mobile app also allows for personalisation of the component controls and to serve as a single access point for all SRAM AXS connected products. Thanks to its wireless electronic shifting technology with engineered hardware, riders will benefit from a new ergonomic experience that's based on touching a button rather than pushing a lever.MTB Rear Derailleur with Overload Clutch ProtectionRiders want a derailleur that shifts on command, whether under climbing load or sprinting to the stage finish. The GX Eagle AXS derailleur gets it done with everything you have come to expect from SRAM AXS connect components. The GX Eagle AXS derailleur is smart enough to protect itself thanks to its incredibly resilient Overload Clutch. Engineered with a variety of rider preferences in mind, it is compatible with SRAM's updated expanded range 10-52t cassette as well as its 10-50t cassette. Showcasing its lineage from the proven GX Eagle mechanical line, the GX Eagle AXS derailleur is there for one thing - to do the job.- AXS enabled componentry software that makes it possible to both program and personalise new SRAM and RockShox components Eagle technology.- Overload Clutch protection.- Finished with the GX Eagle master colourway.- Battery sold separately.Features: Cage Material: Steel Pulley Bearings Material: Steel Use: MTB Speed: 12 speed Max Tooth: 52 Battery Included: No, available separately Manufacturer's Part Number: 00.7518.151.000Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM Force eTap AXS 12 Speed Rear DerailleurFeaturing a tough aluminium cage construction and steel pulley bearings, this versatile rear derailleur is built to withstand the challenges that are associated with road and gravel riding. SRAM has also ensured that this model is AXS enabled, so riders can benefit from easy personalisation and control wherever their journey takes them. Another highlight is its Orbit chain management technology that's specifically designed to keep your drivetrain quiet and secure when travelling on rough roads and gravel. This makes it a great choice of upgrade for riders who want to explore further when the tarmac comes to an end.SRAM AXS Enabled Road Bike Rear DerailleurFast, precise rear shifting is now more attainable than ever. Whether you ride 2x or 1x, tarmac or gravel, the SRAM Force eTap AXS rear derailleur is up for the task. It features Orbit damper technology for quiet, secure chain management over rough roads and capitalizes on larger X-SYNC pulleys for improved durability and efficiency.- Orbit chain management technology keeps the drivetrain quiet and secure- Compatible with both 1x and 2x drivetrains- SRAM AXS enabled, allowing easy personalisation- 36t-max derailleur option is compatible with 10-36, 10-33, and 10-28 cassettes- 33t-max derailleur option is compatible with 10-26, 10-28, and 10-33 cassettes- Larger X-SYNC pulleys for increased durability and efficiency- Compatible with existing eTap batteriesFeatures: Cage Material: Aluminium Pulley Bearings Material: Steel Use: Road, Gravel Speed: 12 speed Max Tooth: Multiple options available to selectTechnologies: AXS Enabled: AXS is SRAM's bike component integration system that connects electronic bicycle components and software. Control: AXS lets you connect your AXS-enabled components to a mobile app, where you can assign custom actions to your controls. Everything speaks the same language, and you can even combine road and mountain bike parts to build the party bike of your dreams. Personalise: Wireless controls open the door to new levels of customisation. With AXS, you can personalise your component behavior to match your riding style and preferences. Turn on enhanced shifting modes, or reassign shifting actions. Measure: The AXP Mobile App and AXS Web allow you to monitor your bike's performance and readiness. It's an easy way to keep tabs on your battery levels—including the CR2032 batteries in eTap shift levers—and keep AXS component firmware up-to-date. AXS Web analyses your ride files specific to shifting, gear use, power zones, and tyre pressure, so that you can quickly and easily learn more about how your bike is working for you and consider adjustments. X-Sync: SRAM X-SYNC chainrings 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 chainrings 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. Accept no imitation. Orbit: Orbit technology is an innovative form of derailleur motion control. It utilises silicon fluid as part of an elegant and ultra-lightweight damper system. Compared to a standard friction clutch system, Orbit technology places no additional resistance on the rear derailleur's spring when under slow or light movement. This means easier shifting and rear wheel removal. And while riding, the fluid damper reduces chain bounce. It's rock-solid reliability for both 1x and 2x systems.Manufacturer's Part Numbers: 00.7518.121.001 Grey Short Cage Max 33t 00.7518.136.000 Grey Medium Cage Max 36tBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.