Sram Red XG-1090 PowerDome Cassette - 10 Speed - Silver / 11-23 / 10 Speed

The Sram Powerdome in the most advance cassette ever made. Its super light, deadly silent and delivers an undeniable performance advantage. The eight cogs in the middle are machined from a single block of high grade tool steel, increasing stiffness while weighing even less than a titanium cassette. Between each cog in the block there is a StealthRing elastomer to reduce vibration and noice. Cutouts on the rear cog further reduce weight and add stiffness.  Powerdome Inspired from the combination of OG-1090 and the XG-1099 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 weâve ever built.  StealthRing Specially designed and incredibly durable elastomers placed in between the cassetteâs cogs to eliminate vibrations and noise.  Features Aluminium cog: lighter, stiffer, stronger due to the choice of design, material and product