SRAM

XG-1275 Eagle Cassette - 12-Speed, 10-50t, XD Driver, Black, C1

SRAM XG-1275 Eagle Cassette delivers wide-range gearing and reliable shifting for modern 12-speed mountain bike drivetrains, built for riders who want consistent performance on long rides and steep climbs. The 10-50t spread provides a true 500% gear range, pairing a fast 10t top gear with a bailout 50t for sustained, low-cadence climbing without sacrificing trail-ready cadence steps.

Built around FULL PIN construction, this 12-speed cassette uses precision-engineered steel cogs permanently connected with stainless steel pins for a strong, service-friendly design that’s designed to keep shifting crisp under load. An open, mud-shedding layout helps maintain performance in messy conditions, and the understated black finish fits cleanly on most builds. Requires an XD driver freehub body.

Trail-focused advantages for Eagle 12-speed

1. 10-50t (500% range) - Broad gearing for steep climbs and high-speed sections without changing chainrings
2. XD Driver Compatibility - Uses SRAM’s XD interface to support a 10t small cog and secure cassette fit
3. FULL PIN Construction - Steel cogs and stainless pins balance durability and weight for all-day riding and repeated hard shifts
4. Open Mud-Clearing Design - Helps reduce debris buildup for more consistent shifting in wet and gritty conditions
5. Black Finish - Low-key colorway that matches contemporary MTB drivetrain aesthetics