The Zipp Service Course 70 XPLR bar’s moniker XPLR exemplifies the desire to explore the world with an expanded definition of cycling on a drop bar bicycle… from paved roads onto gravel mud dirt and even single track. The Service Course 70 XPLR help you go faster by placing your body starting with your hands in an optimal “comfort zone” position for hours of rough riding over mixed terrain. Today’s riders demand a few things out of their cockpit whether they are doing a two hour training ride from home or a 200 mile gravel adventure: comfort control and the ability to carry what they need. We met these needs by creating a bar with shallow and wide drops specifically focusing on two crucial metrics—outsweep and flare. Outsweep is created by rotating the drop below the brake perch outward. Flare is created by rotating the entire drop above the brake perch outward. FEATURES Two cosmetic options bead-blast black or distinctive silver 70mm reach and 115mm drop allow a comfortable hoods position and a shallow drops position 5° drop flare and 11° drop outsweep creates a drops position 6cm wider than hoods Ergonomic top with 3° backsweep 100mm clamping area on top of bar Di2® bar end junction compatible Lifetime warranty SPECIFICATIONS MATERIAL (HB) AL-6061 CLAMP DIAM 31.8mm CLIP COMPATIBLE Yes WIDTH (CENTER-TO-CENTER) 42cm 44cm 46cm REACH (HB) 70mm DROP (HB) 115mm RAMP ANGLE 10° OUTSWEEP 11° FINISH (HB) Bead Blast Black Bright Silver
This is Zipp’s innovative all-road handlebar the Service Course SL 70 XPLR. The bar’s moniker XPLR exemplifies the desire to explore the world with an expanded definition of cycling on a drop bar bicycle… from paved roads onto gravel mud dirt and even single track. The Service Course SL 70 XPLR help you go faster by placing your body starting with your hands in an optimal “comfort zone” position for hours of rough riding over mixed terrain. Today’s riders demand a few things out of their cockpit whether they are doing a two-hour training ride from home or a 200-mile gravel adventure: comfort control and the ability to carry what they need. We met these needs by creating a bar with shallow and wide drops specifically focusing on two crucial metrics—outsweep and flare. Outsweep is created by rotating the drop below the brake perch outward. Flare is created by rotating the entire drop above the brake perch outward. FEATURES Updated distinctive Zipp cosmetics 70mm Reach and 115mm drop allow a comfortable hoods position and a shallow drops position 5° drop Flare and 11° drop outsweep creates a drops position 6cm wider than hoods Ergonomic top with 3° backsweep Matte Black nano blast aluminium Lifetime warranty SPECIFICATIONS MATERIAL (HB) AL-6061 CLAMP DIAM 31.8mm CLIP COMPATIBLE No Yes WIDTH (CENTER-TO-CENTER) 38cm 40cm 42cm 44cm REACH (HB) 70mm DROP (HB) 128mm RAMP ANGLE 10° OUTSWEEP 4° FINISH (HB) Bead Blast Black Bright Silver
A dropper post made for gravel riding? That's right! Once you try it, you'll wonder why it took us this long! The new Reverb™ AXS® XPLR seat post delivers more control, more confidence, and more fun to the emerging breed of lycra-loving or baggy-wearing gravel, free spirits. We created an all-new design complete with new air internals and compliance features to enhance the gravel experience. Reverb AXS XPLR is enabled by SRAM AXS™ technology, a new level of interaction, personalization, and connectivity across all AXS enabled components.Features:ActiveRide™ - Air only internals provide a fully rigid extended position with built-in compliance in the middle to ensure comfort and control over the roughest sections of gravel,Drop force is tunable based on rider weight,AXS™ Technology allowing for customization to an individual rider’s liking via the AXS™ Mobile App,AXS handlebar controls (drop or flat bar) and battery sold separately,Shared battery with all other SRAM AXS enabled components,System is completely water and dust proof to IP69K,Saddle clamps compatible with 7x10, 7x9 Oval carbon and 7mm round rails,Travel options include 75mm and 50mm,Seatpost length includes 400mm and 350mm (50mm drop only).
SpecificationsMaterial (HB): Al-7050,Reach (HB): 70mm,Drop (HB): 115mm,Width (centre-to-centre): 40cm, 42cm, 44cm, 46cm,Clip compatible: Yes,Clamp diam: 31.8mm,Ramp angle: 10°,Outsweep: 11°,Backsweep (degrees): 3,Drop shape: Variable,Clamp width: 100mm,Finish (HB): Matte with stealth decals,Drop Flare: 5°.
SpecificationsMaterial (HB): AL-6061,Reach (HB): 70mm,Drop (HB): 115mm,Width (centre-to-centre): 42cm, 44cm, 46cm,Clip compatible: Yes,Clamp diam: 31.8mm,Ramp angle: 10°,Outsweep: 11°,Backsweep (degrees): 3,Drop shape: Variable,Clamp width: 100mm,Finish (HB): Bead Blast Black,Drop Flare: 5°.
If your ride doesn’t feel complete until you get a little dirt on your tires, you know the importance of capable components that can tackle anything. The Rival XPLR eTap AXS rear derailleur is a dedicated 1x-specific unit designed for use with the XPLR 10-44 cassette. It makes for an uncluttered drivetrain that takes on pavement and singletrack with equal aplomb. Wireless and proven eTap shift logic, AXS connectivity and advanced chain management mean this derailleur does exactly what you want when you need it.Key Features:Wireless electronic eTap shift logic for intuitive shifting, easy setup and reliability,1x specific for use with 10-44 XPLR and 10-36 cassettes,SRAM AXS™ enabled, allowing easy personalization,Chain management keeps the drivetrain quiet and secure,Larger X-SYNC™ pulleys for increased durability and efficiency,Compatible with existing eTap® batteries.
RockShox Rudy Ultimate XPLR Race Day ForkEngineered for modern gravel and E-gravel bike riding, this versatile suspension fork features 30mm straight wall aluminium upper tubes for maximum strength and durability on every mile. RockShox has also equipped this model with magnesium lower legs for additional stiffness, while also keeping its overall weight reduced. This means that riders will enjoy its superior strength to weight ratio wherever their next adventure takes them.Solo Air Spring and Charger Race Day DamperWhether you're wanting to explore the countryside back roads further or planning an epic weekend gravel adventure, this fork is kitted out with some of RockShox's finest technologies to make the ride comfortable, smoother and more rider-tuned. Its Solo Air spring is tuned for short travel, which makes it ideal for handling mixed terrains and mountain gravel road climbs. Another benefit is its adjustable Charger Race Day damper that provides a rock-solid lockout and a full range of rebound adjust. As a result, riders can use its external rebound and two-position (open/lock) compression to dial in their preferred settings to match their riding style as well as the terrain conditions.Versatile Gravel Bike Suspension ForkThe Rudy delivers more control, more confidence, and more fun to the emerging breed of lycra loving, or baggy wearing, gravel free spirits. This isn't a "shrink it" development story, Rudy was built from the ground up to match today's most capable gravel bikes. Going Ultimate means every detail is considered. Rudy Ultimate XPLR features the ultra-lightweight Charger Race Day damper paired with a chiselled machined and anodised crown. Versatility and style are key. That's why Rudy Ultimate XPLR features full fender compatibility, plenty of tyre clearance, and the choice of a "Kwiqsand" Signature colourway or black gloss lower leg finish available to select.- Maxima Lower Leg Performance lube reduces friction and enhances fork performance ride after ride- High performance suspension fork laser-focused on gravel/e-gravel bike- Charger Race Day damper with rock-solid lockout and full range of rebound adjust- Solo Air spring tuned for short travel- Machined and anodised crown- Black Gloss or "Kwiqsand" Signature colourway options- Full fender compatibility using custom stealth stay bosses- 2-bolt mounts to fit a short fender (RockShox fender sold separately)- Maxima Plush damping fluid reduces friction and silences damper noise- Fits up to 700x50 tyres- 30mm and 40mm travel options (available to select separately)Features: Upper Tube Material: 30mm Straight Wall Aluminium with Fast Black finish Lower Leg Material: Magnesium Lower Leg Finish: Black Gloss or Kwiqsand signature colourway options available to select separately Crown Material: Forged, machined and anodised Hollow Aluminium Use: Gravel, E-Gravel bike riding Air Spring: Solo Air Damper Type: Charger Race Day Axle: 12x100mm Steerer Diameter: 1 1/8-1.5" tapered Fork Offset: 45mm Crown OD: 50mm Axle to Crown: 435mm Damper Adjust: Crown Damping Adjustments: External rebound, 2-position compression (open/lock) Volume Reducer: 0/3 Tokens Max Tyre Diameter: 716mm Max Tyre Width: 50mm Brake Type: Direct Flat Mount Disc Maximum Rotor Size: 180mm Minimum Rotor Size: 160mm Fender Compatibility: Full or Short, 3 point and 2 point mounts Maxle Included: Maxle Stealth E-MTB Decal: No Included: Fender, Star nut, Maxle Stealth Wheel Size: 700cManufacturer's Part Numbers: 00.4020.817.000 Black Gloss 700c 40mm 00.4020.817.001 Black Gloss 700c 30mm 00.4020.817.002 Brown Kwiqsand 700c 40mm 00.4020.817.003 Brown Kwiqsand 700c 30mmBuy RockShox Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
RockShox Rudy Ultimate XPLR Race Day ForkEngineered for modern gravel and E-gravel bike riding, this versatile suspension fork features 30mm straight wall aluminium upper tubes for maximum strength and durability on every mile. RockShox has also equipped this model with magnesium lower legs for additional stiffness, while also keeping its overall weight reduced. This means that riders will enjoy its superior strength to weight ratio wherever their next adventure takes them.Solo Air Spring and Charger Race Day DamperWhether you're wanting to explore the countryside back roads further or planning an epic weekend gravel adventure, this fork is kitted out with some of RockShox's finest technologies to make the ride comfortable, smoother and more rider-tuned. Its Solo Air spring is tuned for short travel, which makes it ideal for handling mixed terrains and mountain gravel road climbs. Another benefit is its adjustable Charger Race Day damper that provides a rock-solid lockout and a full range of rebound adjust. As a result, riders can use its external rebound and two-position (open/lock) compression to dial in their preferred settings to match their riding style as well as the terrain conditions.Versatile Gravel Bike Suspension ForkThe Rudy delivers more control, more confidence, and more fun to the emerging breed of lycra loving, or baggy wearing, gravel free spirits. This isn't a "shrink it" development story, Rudy was built from the ground up to match today's most capable gravel bikes. Going Ultimate means every detail is considered. Rudy Ultimate XPLR features the ultra-lightweight Charger Race Day damper paired with a chiselled machined and anodised crown. Versatility and style are key. That's why Rudy Ultimate XPLR features full fender compatibility, plenty of tyre clearance, and the choice of a "Kwiqsand" Signature colourway or black gloss lower leg finish available to select.- Maxima Lower Leg Performance lube reduces friction and enhances fork performance ride after ride- High performance suspension fork laser-focused on gravel/e-gravel bike- Charger Race Day damper with rock-solid lockout and full range of rebound adjust- Solo Air spring tuned for short travel- Machined and anodised crown- Black Gloss or "Kwiqsand" Signature colourway options- Full fender compatibility using custom stealth stay bosses- 2-bolt mounts to fit a short fender (RockShox fender sold separately)- Maxima Plush damping fluid reduces friction and silences damper noise- Fits up to 700x50 tyres- 30mm and 40mm travel options (available to select separately)Features: Upper Tube Material: 30mm Straight Wall Aluminium with Fast Black finish Lower Leg Material: Magnesium Lower Leg Finish: Black Gloss or Kwiqsand signature colourway options available to select separately Crown Material: Forged, machined and anodised Hollow Aluminium Use: Gravel, E-Gravel bike riding Air Spring: Solo Air Damper Type: Charger Race Day Axle: 12x100mm Steerer Diameter: 1 1/8-1.5" tapered Fork Offset: 45mm Crown OD: 50mm Axle to Crown: 435mm Damper Adjust: Crown Damping Adjustments: External rebound, 2-position compression (open/lock) Volume Reducer: 0/3 Tokens Max Tyre Diameter: 716mm Max Tyre Width: 50mm Brake Type: Direct Flat Mount Disc Maximum Rotor Size: 180mm Minimum Rotor Size: 160mm Fender Compatibility: Full or Short, 3 point and 2 point mounts Maxle Included: Maxle Stealth E-MTB Decal: No Included: Fender, Star nut, Maxle Stealth Wheel Size: 700cManufacturer's Part Numbers: 00.4020.817.000 Black Gloss 700c 40mm 00.4020.817.001 Black Gloss 700c 30mm 00.4020.817.002 Brown Kwiqsand 700c 40mm 00.4020.817.003 Brown Kwiqsand 700c 30mmBuy RockShox Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
RockShox Rudy Ultimate XPLR Race Day ForkEngineered for modern gravel and E-gravel bike riding, this versatile suspension fork features 30mm straight wall aluminium upper tubes for maximum strength and durability on every mile. RockShox has also equipped this model with magnesium lower legs for additional stiffness, while also keeping its overall weight reduced. This means that riders will enjoy its superior strength to weight ratio wherever their next adventure takes them.Solo Air Spring and Charger Race Day DamperWhether you're wanting to explore the countryside back roads further or planning an epic weekend gravel adventure, this fork is kitted out with some of RockShox's finest technologies to make the ride comfortable, smoother and more rider-tuned. Its Solo Air spring is tuned for short travel, which makes it ideal for handling mixed terrains and mountain gravel road climbs. Another benefit is its adjustable Charger Race Day damper that provides a rock-solid lockout and a full range of rebound adjust. As a result, riders can use its external rebound and two-position (open/lock) compression to dial in their preferred settings to match their riding style as well as the terrain conditions.Versatile Gravel Bike Suspension ForkThe Rudy delivers more control, more confidence, and more fun to the emerging breed of lycra loving, or baggy wearing, gravel free spirits. This isn't a "shrink it" development story, Rudy was built from the ground up to match today's most capable gravel bikes. Going Ultimate means every detail is considered. Rudy Ultimate XPLR features the ultra-lightweight Charger Race Day damper paired with a chiselled machined and anodised crown. Versatility and style are key. That's why Rudy Ultimate XPLR features full fender compatibility, plenty of tyre clearance, and the choice of a "Kwiqsand" Signature colourway or black gloss lower leg finish available to select.- Maxima Lower Leg Performance lube reduces friction and enhances fork performance ride after ride- High performance suspension fork laser-focused on gravel/e-gravel bike- Charger Race Day damper with rock-solid lockout and full range of rebound adjust- Solo Air spring tuned for short travel- Machined and anodised crown- Black Gloss or "Kwiqsand" Signature colourway options- Full fender compatibility using custom stealth stay bosses- 2-bolt mounts to fit a short fender (RockShox fender sold separately)- Maxima Plush damping fluid reduces friction and silences damper noise- Fits up to 700x50 tyres- 30mm and 40mm travel options (available to select separately)Features: Upper Tube Material: 30mm Straight Wall Aluminium with Fast Black finish Lower Leg Material: Magnesium Lower Leg Finish: Black Gloss or Kwiqsand signature colourway options available to select separately Crown Material: Forged, machined and anodised Hollow Aluminium Use: Gravel, E-Gravel bike riding Air Spring: Solo Air Damper Type: Charger Race Day Axle: 12x100mm Steerer Diameter: 1 1/8-1.5" tapered Fork Offset: 45mm Crown OD: 50mm Axle to Crown: 435mm Damper Adjust: Crown Damping Adjustments: External rebound, 2-position compression (open/lock) Volume Reducer: 0/3 Tokens Max Tyre Diameter: 716mm Max Tyre Width: 50mm Brake Type: Direct Flat Mount Disc Maximum Rotor Size: 180mm Minimum Rotor Size: 160mm Fender Compatibility: Full or Short, 3 point and 2 point mounts Maxle Included: Maxle Stealth E-MTB Decal: No Included: Fender, Star nut, Maxle Stealth Wheel Size: 700cManufacturer's Part Numbers: 00.4020.817.000 Black Gloss 700c 40mm 00.4020.817.001 Black Gloss 700c 30mm 00.4020.817.002 Brown Kwiqsand 700c 40mm 00.4020.817.003 Brown Kwiqsand 700c 30mmBuy RockShox Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
RockShox Rudy Ultimate XPLR Race Day ForkEngineered for modern gravel and E-gravel bike riding, this versatile suspension fork features 30mm straight wall aluminium upper tubes for maximum strength and durability on every mile. RockShox has also equipped this model with magnesium lower legs for additional stiffness, while also keeping its overall weight reduced. This means that riders will enjoy its superior strength to weight ratio wherever their next adventure takes them.Solo Air Spring and Charger Race Day DamperWhether you're wanting to explore the countryside back roads further or planning an epic weekend gravel adventure, this fork is kitted out with some of RockShox's finest technologies to make the ride comfortable, smoother and more rider-tuned. Its Solo Air spring is tuned for short travel, which makes it ideal for handling mixed terrains and mountain gravel road climbs. Another benefit is its adjustable Charger Race Day damper that provides a rock-solid lockout and a full range of rebound adjust. As a result, riders can use its external rebound and two-position (open/lock) compression to dial in their preferred settings to match their riding style as well as the terrain conditions.Versatile Gravel Bike Suspension ForkThe Rudy delivers more control, more confidence, and more fun to the emerging breed of lycra loving, or baggy wearing, gravel free spirits. This isn't a "shrink it" development story, Rudy was built from the ground up to match today's most capable gravel bikes. Going Ultimate means every detail is considered. Rudy Ultimate XPLR features the ultra-lightweight Charger Race Day damper paired with a chiselled machined and anodised crown. Versatility and style are key. That's why Rudy Ultimate XPLR features full fender compatibility, plenty of tyre clearance, and the choice of a "Kwiqsand" Signature colourway or black gloss lower leg finish available to select.- Maxima Lower Leg Performance lube reduces friction and enhances fork performance ride after ride- High performance suspension fork laser-focused on gravel/e-gravel bike- Charger Race Day damper with rock-solid lockout and full range of rebound adjust- Solo Air spring tuned for short travel- Machined and anodised crown- Black Gloss or "Kwiqsand" Signature colourway options- Full fender compatibility using custom stealth stay bosses- 2-bolt mounts to fit a short fender (RockShox fender sold separately)- Maxima Plush damping fluid reduces friction and silences damper noise- Fits up to 700x50 tyres- 30mm and 40mm travel options (available to select separately)Features: Upper Tube Material: 30mm Straight Wall Aluminium with Fast Black finish Lower Leg Material: Magnesium Lower Leg Finish: Black Gloss or Kwiqsand signature colourway options available to select separately Crown Material: Forged, machined and anodised Hollow Aluminium Use: Gravel, E-Gravel bike riding Air Spring: Solo Air Damper Type: Charger Race Day Axle: 12x100mm Steerer Diameter: 1 1/8-1.5" tapered Fork Offset: 45mm Crown OD: 50mm Axle to Crown: 435mm Damper Adjust: Crown Damping Adjustments: External rebound, 2-position compression (open/lock) Volume Reducer: 0/3 Tokens Max Tyre Diameter: 716mm Max Tyre Width: 50mm Brake Type: Direct Flat Mount Disc Maximum Rotor Size: 180mm Minimum Rotor Size: 160mm Fender Compatibility: Full or Short, 3 point and 2 point mounts Maxle Included: Maxle Stealth E-MTB Decal: No Included: Fender, Star nut, Maxle Stealth Wheel Size: 700cManufacturer's Part Numbers: 00.4020.817.000 Black Gloss 700c 40mm 00.4020.817.001 Black Gloss 700c 30mm 00.4020.817.002 Brown Kwiqsand 700c 40mm 00.4020.817.003 Brown Kwiqsand 700c 30mmBuy RockShox Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM XPLR XG1251 CassetteEngineered for the demands of gravel bike riding, this versatile cassette is equipped with a 440% range as well as some of the finest technologies available from SRAM. Whether you're looking to explore countryside backroads or take on an all-day epic ride across mixed terrain conditions, this model's wide range makes gravel mountain climbs less daunting while its tight jumps on its high end make it easy to power up to speed on the asphalt. Developed for use with XPLR 1x rear derailleurs, each cog has shift features that are optimised for electronic shifting. This makes it a great choice of upgrade for getting fast, smooth and accurate shifts, wherever your next gravel bike adventure takes you.X-Range Optimised 12 Speed CassetteDue 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. By starting X-Range cassettes with a 10T cog, SRAM is able to keep the cogs and chainrings smaller overall, eliminating the potential weight gain of a wide-range 11-tooth start drivetrain. It's the best way to expand the range and keep small jumps between cogs.X-Range achieves wider range and tighter jumps by going to a 12-speed cassette, but also by moving some of the gear range from the front of the drivetrain to the back. That means you can stay on the same ring longer, requiring fewer front shifts, which are inherently less efficient than rear shifts. And when a front shift is executed, the smaller jump is smoother and allows you to get to the right cadence with fewer compensation shifts in the rear. Fewer, faster front shifts make it easier for you to find the right gear, and that's a distinct performance advantage relative to traditional drivetrains.440% Range for Gravel RidingMake that daily ride from your front door a little spicier with some dirt. The 440% range of the XPLR XG-1251 cassette provides smooth gear progression when you're sweating up gravel climbs, and tight jumps on the high end for when it's time to drill it on asphalt. Shift features on each cog are optimised for electronic shifting, so you'll get fast, smooth and precise shifts every time.- X-Range gearing gives you more range and a smoother gear progression, so you're always in the right gear- 440% range gives the coverage 1x gravel riders want- For use with XPLR 1x rear derailleurs- Compatible with Flattop chains- Compatible with XDR driver body- All Zipp wheels starting from 2015 are XDR ready- Mini Cluster technology for light weight and durabilityFeatures: Cog Finish: Nickle Chrome Use: Gravel, Road Speed: 12 speed Tooth Count: 10-44T Cog Sizes: 10-44T: 10,11,13,15,17,19,21,24,28,32,38,44 Technology: XG, X-Range gearing Manufacturer's Part Number: 00.2418.119.000 440% range For use with XPLR 1x rear derailleurs Compatible with Flattop chains Compatible with XDR driver bodyBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
SRAM XPLR XG1271 CassettePerfect for gravel riding, this high-quality 12 speed cassette comes fully equipped with some of the finest technologies available from SRAM for maximum performance on every adventure. Ready for exploring countryside backroads with mixed terrain conditions, this model is kitted out with a wide 440% range, which makes gravel mountain climbs less daunting while its tight jumps between its higher cogs allow you to get the power down when accelerating on the asphalt. Specifically designed for use with SRAM XPLR 1x rear derailleurs, each cog has shift features that are optimised for electronic shifting. This means that riders will enjoy electronic benefits such as faster, smoother and more accurate shifts, so you're always in the right gear.X-Range Optimised 12 Speed CassetteDue 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. By starting X-Range cassettes with a 10T cog, SRAM is able to keep the cogs and chainrings smaller overall, eliminating the potential weight gain of a wide-range 11-tooth start drivetrain. It's the best way to expand the range and keep small jumps between cogs.X-Range achieves wider range and tighter jumps by going to a 12-speed cassette, but also by moving some of the gear range from the front of the drivetrain to the back. That means you can stay on the same ring longer, requiring fewer front shifts, which are inherently less efficient than rear shifts. And when a front shift is executed, the smaller jump is smoother and allows you to get to the right cadence with fewer compensation shifts in the rear. Fewer, faster front shifts make it easier for you to find the right gear, and that's a distinct performance advantage relative to traditional drivetrains.440% Range for Gravel RidingMake that daily ride from your front door a little spicier with some dirt. The 440% range of the XPLR XG-1271 cassette provides smooth gear progression when you're sweating up gravel climbs, and tight jumps on the high end for when it's time to drill it on asphalt. Shift features on each cog are optimised for electronic shifting, so you'll get fast, smooth and precise shifts every time.- X-Range gearing gives you more range and a smoother gear progression, so you're always in the right gear- 440% range gives the coverage 1x gravel riders want- For use with XPLR 1x rear derailleurs- Compatible with Flattop chains- Compatible with XDR driver body- All Zipp wheels starting from 2015 are XDR ready- Mini Cluster technology with aluminium large cog for light weight and durabilityFeatures: Cog Finish: Nickle Chrome Use: Gravel, Road Speed: 12 speed Tooth Count: 10-44T Cog Sizes: 10-44T: 10,11,13,15,17,19,21,24,28,32,38,44 Driver Body Interface: XDR Technology: XG, X-Range gearing Manufacturer's Part Number: 00.2418.118.000 440% range For use with XPLR 1x rear derailleurs Compatible with Flattop chainsBuy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.