I avoided it for months, but after the stock Grubee BMX chain stretched and jammed up, I couldn't find 2 chain lengths that agreed, even with half link. I have resorted to using the cheapy tensioner. I put it on the pedal side (coaster brake), and made it so that the booger won't pull into the wheel. Worst case it might rub on the rim if the wheel moves in the sockets. I plan to weld it to the frame, also, for safe keeping.