e*thirteen Helix Race 12-Speed 9-50T Cassette - Bronze Size:9-50 NOT GoPro Compatible

NOT GoPro Compatible

Built to make the surge stick

which facilitates breathing

Powered by a CR2032 lithium battery offering up to 200 hours of operating time

MotionControl (MoCo)

e*thirteen Helix Race 12-Speed 9-50T Cassette - Bronze Size:9-50 NOT GoPro CompatibleThe HELIX Race Cassette is an upgrade to any SRAM Eagle or Shimano shifter and derailluer combination*, 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. Features Compatible with SRAM, Shimano and TRP shifters and derailleurs of the same gearing count and similar cage