How Tight Should a Mountain Bike Chain Be? Tips and Tricks for Optimal Performance
A mountain bike chain should be tight enough that there is no slack or drooping in the chain, but also not so tight that it restricts the movement of the pedals or causes excessive wear on the chain and gears. Generally, a good rule of thumb is to make sure there is a slight amount of movement or play in the chain when the pedals are at their highest and lowest point of rotation.