ZTTO Bicycle transmission kit;Flywheel 10 Speed 11-50T Cassette Flywheel Derailleurs er Bike 1x10 Speed Cassette Flywheel 10 Bike Crankset 11-50T 10 Speed Chain Derailleurs Shifter Mountain Bike kit

Easy to install and use; with nice compatibility; smooth running; make riding easier. 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. 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. It can be used to modify your bike shifting system; perfect as a gift for family; friends; colleagues; cycling enthusiasts; etc.