Product Name: Bicycle card flywheel (mountain bike)
Brand: Sunshine sz
Color: Silver Black
Speed: 9-speed universal 18-27-speed mountain bike
Gear ratio: 11-13-15-17-19-21-24-28-32t
Weight: about 327g
Description: mountain bike truck flywheel, 9-speed 11-32t, accurate positioning, compatible with two major systems, such as Shimano's kit, 9-speed m370, m390, M430, M2000, M4000, mine m530; and SRAM kit, 9-speed X5, X7