This slide is made using 7075-T6 aircraft aluminum and polished. This slides range is from 30 to 50+ pinion gear and only works with the 3250 M2C RACING MOTOR MOUNT. FYI.
The largest pinion gear I could buy was a 45 tooth. you can use all (3) lock down screws with this slide. It will accept a larger gear, but u will only be able to use (2) of the 4 mm lock down screws as pictured above.
*THIS IS DESIGNED TO RUN ON M2C MOTOR MOUNT. WILL NOT WORK WITH STOCK MOTOR MOUNT *