Use this hanger kit to make your new or existing Boost Chumba Frame compatible with the new SRAM Transmission Drivetrain (T-Type for short). These should be paired to a 55mm chain line crankset for Boost 148×12 MTB and a 52mm chain line for standard 142×12.

If you order a SRAM Transmission from us, we will include the insert set for free! Note the silver inserts are samples, they will ship as black.

PS don’t forget to order the corresponding axle available here: https://chumbausa.com/components/wolf-tooth-rear-thru-axle Does not come with the 4 main bolts. You can use your existing hardware for that.