US$ 139.99
Zinc-alloy plated outer link surface treatment
they also work well with other drive trains
Tri Doc provides a stable platform for wrenching on the bike
DARTs can’t be felt while riding
Offers no 'weak' link in the chain
NEW e*thirteen Helix R Steel Cluster - 11-Speed, 9-39t, Nickel cassette_7speed Zinc-alloy plated outer link surfaceHelix R Clusters can be used to service e*thirteen Helix R cassettes. Designed to pair with aluminum large cog cluster to create a complete cassette Cassette Body Type: SRAM XD 11 12 Speed Drivetrain Speeds: 11 Material: Steel Tooth Count: 9 39