SRAM XG-1251 12-Speed Cassette

Make 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 optimized for electronic shifting, so you’ll get fast, smooth and precise shifts every time.

Technology

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.

XDR

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 1.85mm longer than XD and is designed for road hub applications. XDR driver bodies are compatible with all XD cassettes when the cassette is installed with a 1.85mm spacer.

X-Range

Road bikes are faster and more capable than ever before, and riders are expanding what’s possible with drop bar bikes. 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 as smarter shift settings—enabled by AXS. With X-Range, you’re always in the right gear.

Features

• 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

• Speed: 12
• Cog Finish: Nickel Chrome
• Technology: XG
• Driver Body Interface: XDR