SCS Professional Series Quick Change Gear Set #4K BR20041 4-inch bolt pattern and 1

4-inch bolt pattern and 1

The Zamp RZ-60V auto racing helmet includes a Visor and Shield with the Aramid-mix shell

to PTFE washers

120" wall x 1-1/2" mild steel tube

SCS Professional Series Quick Change Gear Set #4K BR20041 4-inch bolt pattern and 1SCS Professional Series Quick Change Gears are made from aircraft steel for maximum strength. Each gear has a shaved finish to minimize backlash and run out, and is broached for proper 10 spline shaft fit. The SCS Extra 5 step heat treating process yields maximum gear life for high stress applications such as big block Oswego Super Modifieds and World of Outlaws Sprint Cars. Gears have a black oxide finish, and the faces have been lightened to reduce