Sell MTB Bike Sprocket Thread Type Bicycle Flywheel Bike Sprocket 6,7, 8,9 Speed best price

MTB Bike Sprocket Thread Type Bike Sprocket 6,7, 8,9 Speed 6SPEED: 14-16-18-21-24-28T 7SPEED:14-16-18-20-22-24-28T 8SPEED:13-14-16-18-20-22-24-28T 9SPEED:13-14-15-17-19-21-24-28-32T Material: high tensile steel + quenching treatment Note: the flywheel chain with the old and new use, will appear at the beginning of the jump chain situation. This is because the old parts have worn out over a long period of time, and the tooth shape has worn out when mixed with the new parts, leading to the failure of the perfect bite. In general, this situation only needs to continue to run in tens of kilometers, the problem can disappear automatically. If your chain has been used more than 3,000 kilometers, change the flywheel at the same time, it is suggested to change the chain together.