Helix Plus Cassette 12s AL Cogs 42-50T e*thirteen S3-Cat-EffettoMariposa-FrameProtection UK: (M) 3-12

UK: (M) 3-12

Integrated 7-Speed Cassette: Direct-mount 9-24t gear range designed specifically for downhill racing efficiency

The handles are designed to be used as tire levers

The waterproof material ensures durability and protection from the elements

BMX / Dirt Helmet

Helix Plus Cassette 12s AL Cogs 42-50T e*thirteen S3-Cat-EffettoMariposa-FrameProtection UK: (M) 3-12e*thirteen 12 Speed Aluminum Replacement cluster 42 50T for a 9 50 Helix Cassette Black Helix Plus cassettes have replaceable gear clusters. That means ongoing service and replacement costs will be less than half that of SRAM cassettes. As an added bonus, Helix 12s clusters are backward compatible with and can be used to upgrade your existing TRS+ 9 50 cassette. When installing the Helix Plus cassette, as with any cassette, we recommend checking chain