DID Chain

A drive chain that is too tight speeds up wear by excessive pressure on the sprocket teeth, the chain joints and the shaft bearings. A chain that is too loose will wear quickly and may have a whip action that can cause it to snap. A chain that is too tight or too loose will result in excessive elongation.

It is important to check sprockets for wear periodically. If wear occurs on the side of the teeth, it means there is misalignment, a condition which will result in greatly reduced chain life. Check sprocket alignment visually by sighting across them from the rear of the motorcycle or by placing a ruler against them to see if they are in the same plane. Realign or replace as required. When new sprockets are installed, they should be carefully aligned on the shafts with a straight edge. Misalignment increases drive noise level and also increases chain and sprocket wear. Chains operating on misaligned sprockets have a tendency to develop tight joints because sprocket teeth force the inside plates outward on the bushings,thus binding the joint.

DID make 3 grades of road bike X-Ring chain:

VX - Entry Level Economy X-Ring (Replaces the old V Spec O-Ring)

VM - OE Fit on most modern bikes

ZVM - Heavy duty top of the range