e*thirteen Helix Race Cluster 12-Speed 9-50 Nickel/Grey Cassette

The HELIX R Cassette is an upgrade to any SRAM™ Eagle™ or Shimano™ drivetrain*, with more range than any other cassette on the market. The 9 tooth cog lets you step down one chainring size while keeping the same top end gearing and provides not only better ground clearance, but an overall lighter drivetrain.- Additionally, if your wheel has a SRAM™ XD™ Driver and you want to upgrade to Shimano™ 12s, you not only save money on the cassette and don't have to spend the extra on a new hub driver.- All e*thirteen cassettes require XD drivers for mounting- Please reference our hub compatibility article to ensure the e*thirteen cassette will work on the hub you have before purchase.Specifications:Compatibility:- Works flawlessly with Shimano™ and SRAM™ 12s drivetrains*, despite the challenges in designing for the different cog spacing and chain behavior.- Freehub Mount: XD™ and XDR™ Drivers Only- Material: 2 aluminum cogs, 10 steel cogs. PVD finishing on Intergalactic model improves durability and wear life.- Range: 556%- Speeds: 12 Speed- Weight: 375 Grams