ZTTO Bicycle transmission kit,Crankset 11-50T Cassette Sizepeed MTB Derailleurs Bike Crankset 11-50T Flywheel 10 Sizepeed 10 Sizepeed Chain 1x10 Sizepeed Cassette Flywheel 10 Derailleurs er Mountain Bike ANRIO

Easy to install and use, with nice compatibility, smooth running, make riding easier. The 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. It can greatly improve the speed performance of mountain bikes, combining aerodynamics to reduce bike weight and increase riding speed. Made of high-quality steel and aluminum alloy, it is sturdy and has nice durability, high strength, wear-resistant and impact-resistant, not easy to rust. It can be used to modify your bike shifting system, perfect as a gift for family, friends, colleagues, cycling enthusiasts, etc.