Lightweight and true aluminum pinion gears for on-road oval and even the newer off-road carpet racing. Meshes with all 64 pitch spur gears. Hard anodized for longer life. 64 pitch in sizes from 20 to 70 teeth. Uses 3mm set screw (included). Standard 540 motor shaft size. Size etched on pinion back.
Hard anodized for longer life
Overall all width tooth face & hub 7.6mm
Tooth face width 4mm
1/8th Shaft hole
3mm set screw
Easy to read tooth size printed on hub