SRAM XPLR XG-1251 12 Speed Cassette | The Bike Affair
SRAM XPLR XG-1251 12 Speed Cassette | The Bike Affair
SRAM XPLR XG-1251 12 Speed Cassette | The Bike Affair

SRAM XPLR XG-1251 12 Speed Cassette


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SRAM XPLR XG-1251 12 Speed Cassette: Versatility for Every Terrain

Elevate Your Ride with Unmatched Range

The SRAM XPLR XG-1251 12 Speed Cassette is engineered for the adventurers who crave variety in their rides, blending the worlds of asphalt and off-road with seamless precision. Offering an expansive 440% range, this cassette ensures smooth gear progression on challenging gravel climbs and provides the tight gear jumps necessary for powering through on the pavement.

Optimized for Smooth, Precise Shifting

Designed with electronic shifting in mind, the XPLR XG-1251 cassette features shift enhancements on each cog, delivering fast, smooth, and precise shifts every time. This optimization ensures a responsive and reliable shifting experience that keeps you focused on the ride, not on your gear.

Versatile Performance for Mixed Surfaces

Whether you're exploring gravel backroads, tackling dirt trails, or cruising on asphalt, the XPLR XG-1251 cassette is your companion for smooth transitions between terrains. Its broad gear range and precise shifting capabilities make it ideal for riders looking to push their limits and explore without boundaries.

Durable Construction for Lasting Reliability

Crafted with SRAM's commitment to quality, the XPLR XG-1251 cassette is built to withstand the rigors of mixed-terrain riding. Its durability ensures that you can count on reliable performance ride after ride, allowing you to focus on the adventure ahead.

Enhance Your Cycling Experience

With the SRAM XPLR XG-1251 12 Speed Cassette, you're not just upgrading your drivetrain; you're enhancing your entire cycling experience. Its versatility, smooth shifting, and expansive gear range invite you to explore further and climb higher, making every ride an opportunity for adventure. Embrace the freedom to roam across all terrains with confidence and precision.


Features of SRAM XPLR XG-1251 12 Speed Cassete

  • 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
  • MINI CLUSTER technology for light weight and durability

Specifications of SRAM XPLR XG-1251 12 Speed Cassete

Model ID CS-XG-1251-D1
Speed(CS) 12s
Gearing 10-44T
Cog Finish(Cassette) Nickel Chrome
Cog Sizes 10-44T: 10,11,13,15,17,19,21,24,28,32,38,44

Technologies of SRAM XPLR XG-1251 12 Speed Cassete

Mini Cluster:

The Mini Cluster hybrid cassette construction combines four small cogs that are CNC machined out of a single block of billet steel with an additional eight cogs that are individually pinned together. The result: a cassette that's light, durable and equipped with a gear range that's a perfect fit for any ride.


The XDR driver body is a universal mounting system for cassettes that incorporate cogs with fewer than 11 teeth. It allows for lighter and more versatile drivetrains without requiring new rear axle standards, cassette tools or hub redesigns. The XDR interface is 1.85 mm longer than XD and is designed for road hub applications. XDR driver bodies are compatible with all XD cassettes when the cassette is installed when the cassette is installed with a 1.85 mm spacer.


Road bikes are faster and more capable than ever before and riders are expanding what's possible with drop bar bike. X-Range is gearing for today's road riding. We completely reimagined road gearing for wider range, more useful and smoother gear progression, as well a smarter shift settings-enabled by AXS. With X-Range, you're always in the right gear.

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