Product Review

Inner Diameter of U type Bolt: 2.047 inch(52mm),pls refer to the Third picture;
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 and it is used to fasten the engine to the plate, pls pay more attention on it before purchasing, especially your engine is with 6mm front mount bolts
For 48cc/ 66cc/80cc 2-stroke bicycle engines Universal Mount for Bike Motors;
This universal mount helps mounts your bike motor to bigger down tubes. Works on most newer bicycles and allows you to mount the motor without drilling through the frame