PLEASE refer to the third and fourth pictures with detail sizes before purchasing; Inner Diameter of U type Bolt: 2.047 inch(52mm),pls refer to the Third picture
Thickness of steel plate: 2.9mm; Compatible with 1.5" to 2" stud spacing and suitable for front mount bolt 6mm and 8mm
the two big bolts comes with item is 8mm which are used to fasten the engine to the steel plate, pls pay more attention on it before purchasing, especially your engine is with 6mm front mount bolts
This universal mount helps mounts your bike motor to bigger down tubes. mount the motor without drilling through the frame
For 48cc/ 66cc/80cc 2-stroke bicycle engines Universal Mount for Bike Motors;