SRAM

Features

1. Cassette's 9 core cogs are machined from a single block of high grade tool steel, increasing stiffness yet weighing less than a titanium cassette
2. Between each cog is StealthRing elastomer to reduce vibration and noise for a smooth, quiet ride
3. Hollow steel dome makes for the stiffest gear cluster ever at the lightest weight; cutouts on the rear cog further reduce weight and add stiffness
4. Lowest range cog is heat-treated aluminum
5. Compatible with SRAM RED eTap, RED, Force, Apex