Bicycle Brake Cable Off Road Bike MTB Mountain Derailleur speed Shift Shifter Core Inner Wire Front and Rear Inside Line

S-RIDE MTB Rear Derailleurs 8/9/10/11/12 Speed Mountain Bike Derailleurs M300 M400 M410C Aluminum alloy Long Cage Bicycle Part

Guidance before buying First count the number of sprockets on your bike. If you have 9 Pieces, buy a 9-speed rear derailleur. To know how many teeth your cassette has on the largest sprocket: The maximum number of teeth of the sprocket is 25T 28T 30T, we recommend you to buy the short cage models. The maximum number of teeth of the sprocket is 30T 32T 34T 36T, we recommend you to buy the long cage models. The maximum number of teeth of the sprocket is 36T 40T 42T 46T 50T, we recommend you to buy [...]