E-Thirteen Helix 12 Speed Race Cassette - XD Driver - Grey - 9-50T - 12 Speed Images Uploaded - Ready for Review Closure or Slip-on: These are

Closure or Slip-on: These are a simple slip-on design

Materials: Features a lightweight plastic construction

Pros: It's breathable and still offers a good level of protection for your chest and spine

A clever solution that allows you to replace your Specialized rear shock with a regular standard sized shock

Installation: See the video below for the complete walkthrough

E-Thirteen Helix 12 Speed Race Cassette - XD Driver - Grey - 9-50T - 12 Speed Images Uploaded - Ready for Review Closure or Slip-on: These areThe 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. The improved tooth profile of the Helix cassette's features Shimano 12 speed level shifting performance with the improved reliability of a steel and