SRAM XS-1275 GX Eagle T-Type Cassette 10-52T

The SRAM XS-1275 GX Eagle T-Type cassette is designed specifically for SRAM’s Eagle Transmission drivetrain, delivering faster, smoother, and more reliable shifting than ever before. Built around a 12-speed 10-52T range, this cassette provides a massive 520% gear range to tackle steep climbs while maintaining efficient high-speed gearing.

Unlike traditional Eagle cassettes, the XS-1275 was engineered around SRAM’s Transmission architecture, optimizing shifting performance both under power and across the entire cassette range. The full X-SYNC tooth profile helps guide the chain smoothly, allowing riders to shift confidently even while pushing hard on technical climbs.

The cassette uses an XD driver body interface and features a unique gear progression with larger 38T and 44T cogs before reaching the 52T climbing gear. This creates smoother jumps between easier gears and improves cadence control on demanding terrain.

Why We Like It

At Fanatyk Co, we like the SRAM XS-1275 GX Eagle T-Type cassette because it brings Transmission-level performance to one of the most important components of your drivetrain.

For Whistler and aggressive BC riding, shifting under load is a huge advantage. When you are halfway up a technical climb, pushing through roots and rocks, the ability to shift smoothly without backing off the pedals makes a noticeable difference.

The GX Eagle Transmission cassette offers an excellent balance of performance, durability, and value. It delivers many of the same technologies found in SRAM’s higher-end Transmission cassettes while remaining practical for riders who put serious mileage on their bikes.

The 10-52T range is another standout feature. Whether you are climbing fire roads, technical singletrack, or steep alpine terrain, the 52-tooth cog gives you the low-end gearing needed to keep spinning.

Key Features

• SRAM Eagle Transmission (T-Type) compatible
• 12-speed drivetrain
• 10-52T gearing range
• 520% gear range
• XD driver body compatible
• Full X-SYNC tooth profile
• Optimized shifting under load
• Designed around a 55mm chainline
• Improved gear progression with 38T and 44T intermediate cogs
• Black finish
• Approximate weight: 445g

Gear Range

SRAM XS-1275 GX Eagle T-Type 10-52T:

10T → 12T → 14T → 16T → 18T → 21T → 24T → 28T → 32T → 38T → 44T → 52T

Best For

✅ SRAM Eagle Transmission builds
✅ Enduro bikes
✅ Trail bikes
✅ E-MTB applications (where compatible)
✅ Riders who shift under heavy load
✅ Whistler Bike Park and aggressive BC terrain

Not ideal for:
❌ Non-T-Type Eagle drivetrains
❌ Riders using Shimano or non-XD driver hubs