SRAM XG-1275 GX Eagle Cassette 12 Speed 10-52T Black - Wide Range MTB Gear | Cycling Gears Hub

Upgrade your mountain bike drivetrain with the SRAM XG-1275 GX Eagle Cassette, a wide range 12 speed cassette built for riders who prioritize all-day function, reliable climbing power, and dependable trail performance over anything else. Offering the performance characteristics of SRAM's higher-end cassette lineup at a more accessible price point, the XG-1275 is engineered for trail, enduro, and long-mileage mountain bikers who need a cassette that delivers, ride after ride.

Wide Range 520 Percent Gearing:
The standout feature of the XG-1275 is its expansive 10-52T gear range, providing an impressive 520 percent gear spread. This wide range allows riders to spin and recover comfortably on the steepest, longest climbs, while still maintaining strong top-end gearing for fast flats and descents. The cog progression of 10-12-14-16-18-21-24-28-32-36-42-52 ensures smooth, evenly spaced gear steps throughout the entire range, giving riders the flexibility to dial in the perfect cadence no matter the terrain.

FULL PIN Technology:
This cassette is built using SRAM's FULL PIN technology, which uses lightweight, precision engineered stamped steel cogs that are permanently connected using high-strength stainless steel pins. This construction method delivers a cassette that is both incredibly light and exceptionally durable, capable of withstanding the demands of aggressive trail riding, enduro racing, and heavy e-bike use without compromising on performance or longevity.

Open Design for Mud Clearance:
Similar in design philosophy to SRAM's premium X-DOME cassettes, the XG-1275 features an open architecture that actively sheds mud, dirt, and debris rather than allowing it to pack into the cassette body. This open design results in cleaner, more consistent shifting performance in wet and muddy trail conditions, while also extending the overall service life of the cassette and reducing drivetrain wear over time.

X-GLIDE 2 Shifting Technology:
The SRAM XG-1275 incorporates X-GLIDE 2 technology, the next generation evolution of SRAM's original X-GLIDE system, specifically optimized for Eagle 12 speed cassettes. This technology improves both inboard and outboard shifting performance across the entire gear range, while significantly increasing chain retention on the larger cogs, an especially important feature for riders tackling rough, technical, and high-speed descents where chain security matters most.

E-Bike Durability:
The XG-1275 cassette meets the specific durability requirements for E-MTB applications, making it a reliable choice not just for traditional pedal-powered mountain bikes, but also for e-bike drivetrains that experience higher torque loads and more demanding riding conditions.

Compatibility:
This cassette is designed to work exclusively with a SRAM XD or XDR driver body, which is standard across most modern Eagle-compatible wheelsets. Riders upgrading from an older Shimano HG-style freehub will need to install a compatible XD or XDR driver body before mounting this cassette. It is compatible with SRAM Eagle 12 speed drivetrains, including both mechanical and AXS electronic Eagle groupsets, provided the rear derailleur is rated to handle a 52 tooth largest cog.

Weight and Finish:
Weighing approximately 450 grams, the SRAM XG-1275 offers a solid balance between strength, durability, and manageable weight for a wide-range 12 speed cassette. Finished in a sleek, understated black colorway, it fits cleanly into virtually any mountain bike build, from cross country and trail bikes to enduro rigs and e-mountain bikes.

Ideal Use Cases:
This cassette is ideal for trail riders, enduro racers, and e-mountain bike owners who need a dependable, wide-range 12 speed cassette capable of handling long days in the saddle, steep technical climbs, and demanding descents. It is also a great choice for riders upgrading from narrower range cassettes who want more climbing gears without sacrificing high speed performance on flats and downhills.

Key Specifications Summary:
Brand: SRAM
Model: XG-1275 (GX Eagle)
Product Type: Cassette
Number of Speeds: 12 Speed
Gear Range: 10-52T (520 Percent Range)
Cog Configuration: 10-12-14-16-18-21-24-28-32-36-42-52
Cog Material: Stamped Steel with Aluminum Largest Cog
Color: Black
Cassette Body Compatibility: SRAM XD/XDR Driver Body
Designed for E-Bike Use: Yes
Weight: Approximately 450 grams
Technology: FULL PIN Construction, X-GLIDE 2, Open Mud-Shedding Design
Intended Use: Trail, Enduro, and E-Mountain Bike Riding

The SRAM XG-1275 GX Eagle Cassette delivers a wide 520 percent gear range, durable FULL PIN construction, and reliable X-GLIDE 2 shifting performance, making it an excellent upgrade for trail, enduro, and e-MTB riders who demand dependable climbing power and consistent shifting in all conditions.