About SRAM XPLR XG-1251 10-44 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 optimised for electronic shifting, so you’ll get fast, smooth and precise shifts every time.

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

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. SRAM 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.

Specifications
Speed (CS): 12s

Gearing: 10-44t

Cog Finish (Cassette): Nickel Chrome

Technology (Cassette): XG

Cog Sizes: 10-44t: 10,11,13,15,17,19,21,24,28,32,38,44

About SRAM
Founded in 1987, SRAM (an acronym of the 3 founders names, Scott, Ray and Sam) is a privately owned bicycle component manufacturer located in Chicago. They're known for developing many of the inovative technologies used in bikes today including ETAP wireless electric shifting, Grip Shift, dedicated single chain ring drivetrains, narrow wide chainrings and more. Sram also own bicycle component brands Rockshox, Quarq, Zipp and Truvativ.