taco eater :
ciao caldwell from san francisco, CA United States
the longest size (950mm) is actually 950/960mm which is rad. on a stock single speed ciao (30mph) bell and 95mm pulley the belt tension is about 1/4 way from the most slacked point. this is perfect and will allow for belt stretch and wear. it SHOULD be short enough to run an 80mm rear pulley as well!!