Standard 1 1/8" diameter. The Crampbuster CB2 fits most bikes with standard grips, metric bikes too. The CB2 wide paddle, fits 1 3/8 or smaller diameter, 1 inch wide by 3 inches long
Short, wide paddle
Full throttle control with a relaxed hand
Reduces hand fatigue and cramping
Comfortably fits your hand
Easier throttle operation
Eliminates throttle "creep"
Doesn't lock throttle on