If you have a modern Chinese-made scooter, then our front disc brake caliper for 125cc and 150cc GY6 scooters is an item you may eventually require The ubiquitous Honda-designed GY6 engine has revolutionized modern scooters, and numerous Chinese-made scooter models now use this basic design 30 Day Warranty Description If you have a modern Chinese-made scooter, then our front disc brake caliper for 125cc and 150cc GY6 scooters is an item you may eventually require. The ubiquitous Honda-designed GY6 engine has revolutionized modern scooters, and numerous Chinese-made scooter models now use this basic design. Please look at the above image carefully. If your GY6 scooter used an identical caliper, this this will probably work just fine on your scooter. The caliper has a 44mm bolt hole spacing.