It's the final piece in the drivetrain puzzle, and paired with SRAM RED eTap and RED rear derailleurs, it delivers ultra-fast, ultra-quiet shifts that will always put you in the right gear.

• Technology Highlight(s)
• PowerdomeX™/ X-Glide™ Cogs/ StealthRings™
• Weight
• 151g (11-25T), 185g (11-30T), 196g (11-32T)
• Material
• High grade tool steel cog cluster, Heat treatment process, Heat treated aluminum lowest range cog, Elastomer rings
• Gear Ratios
• 11-25: 11,12,13,14,15,16,17,19,21,23,25,
  11-26: 11,12,13,14,15,16,17,19,21,23,26,
  11-28: 11,12,13,14,15,16,17,19,22,25,28,
  11-30: 11,12,13,14,15,17,19,21,24,27, 30,
  11-32: 11,12,13,14,15,17,19,22,25,28,32
• 
  Speeds
• 11
• Recommended Chain
• SRAM RED® 22 chain, SRAM PC-1170 chain
• Recommended Group
• SRAM RED®
• Available in
• 11-25, 11-26, 11-28, 11-30, 11-32

PowerdomeX

Inspired from the combination of OG1090 (SRAM RED) and the XG 1099 (SRAM XX) cassettes, the heat-treated high-grade tool steel features hollow construction with CNC-machined cogs and rear cut-outs for reduced weight and added stiffness. The result is the stiffest and lightest cassette we’ve ever built.

StealthRing

Specially designed and incredibly durable elastomers placed in between the cassette’s cogs to eliminate vibrations and noise.

X-Glide

Imagine being able to shift smoothly at any time, no matter what. We’re talking full-power shifts. Up, down, whatever the trail demands. The benefit of the X-Glide drivetrain is simple, yet, when you think about it, incredibly impactful to the way you ride. Flawless shifting means you’ll never again compromise your speed and power in unpredictable off-road terrain.

Here’s how we did it: TRUVATIV’s crank engineers threw away the old standards and developed a new chainring geometry from the ground up. They precisely paired the different-sized chainrings and redesigned where and how the chain engages with the rings. By aligning the chainring pick-up rivets to the chain pivot pin—rather than the middle of the chain link—you get double the shift opportunities.

No more missed shifts, ever. X-Glide puts you in THE RIGHT GEAR, right now.