GOOFIT Electric Starter Motor Under-Mounted for 50cc 70cc 90cc 110cc 125cc Horizontal Engine Chinese ATV Dirt Bike Go Kart 12 teeth The installation pitch-row:24.98mm Fit for 50cc 70cc 90cc 110cc 125cc horizontal engine,not for GY6 or vertical engine Delivery time:1-2 days (Sold by GOOFIT and Fulfilled by Amazon) Delivery time:7-15 days (Ships from and sold by GOOFIT)