Box One DH 7sp Drivetrain MTB GroupsetThis top-quality groupset is specifically designed for MTB use as it offers amazing power and control on intense mountain bike trails. It features a blended aluminium, carbon fibre and nylon composite construction, which makes it capable of handling the abuse associated with extreme off-road riding. Ready for any MTB riding situation, this 7 speed groupset is a perfect choice of upgrade for completing your dream bike build. Features: Material: 6061-T6 Aluminium, Carbon Fibre/Nylon Composite Hardware: Aluminium, CrMo Finish: Hard Onyx Cage Size: X-Wide Use: MTB Speed: 7 speed Maximum Cog: 24T Pulleys: Precision sealed bearings Part Number: BX1BUNDLE3 Includes: x1 Box One 7 Speed DH rear derailleur x1 Box One 7 Speed shifter x1 Box Two 11-24 cassette x1 Box One 11 speed chain Weight: 279g (approx)Buy Box Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.