Tomfoto 1x10 Speed MTB Derailleurs Shifter Groupset Bike Crankset 11-50T Cassette Flywheel 10 Speed Chain for MTB Mountain Bike

Easy to install and use, with nice compatibility, smooth running, make riding easier.. It can be used to modify your bike shifting system, perfect as a gift for family, friends, colleagues, cycling enthusiasts, etc. Made of high-high-grade steel and aluminum alloy, it is sturdy and has nice durability, high strength, wear-immune and impact-immune, not easy to rust. It can greatly improve speed performance of mountain bikes, combining aerodynamics to reduce bike weight and increase riding speed. kit includes a 10-speed cassette flywheel, a 104BCD 170mm crank set, a 10-speed chain, a shifter, a rear derailleur, a center shaft and a hanger extender