I still can't figure out why I'm the only one who loves these! I still haven't found a bike where clearance is a problem. You have to squeeze them through the chain tensioner, but they cut their groove without compromising the rubber block. They require only a cleaning and squirt with silicone to condition the o-rings, as the lube is inside. They do not stretch and wear out those expensive aluminum sprockets. I've run them for 3-4 years and, when selling the bike, they still show no signs of stretch. They're so smooth...somewhere between a chain and a belt. Why can't people get hip to these? I'm getting back into trials after several years off and, when buying some parts from my favorite supplier, I still heard, "Too wide...not enough clearance...nobody runs them..." Give one a try!