Robinson Racing Products Extra Hard 5mm Bore .8 Module 31.75P Pinion 21T RRP8721

This Robinson Racing Products pinion gear features a 5mm bore, 0.8 module (31.75 pitch) tooth profile, and a 21-tooth count. It is made to extra-hard specification for increased wear resistance compared to standard pinions. A set screw is included for securing the gear to the motor shaft. This is a factory replacement pinion compatible with Traxxas E-Maxx, E-Revo, and Summit platforms. Features: 21-tooth count 5mm bore fits standard motor shafts 0.8 module / 31.75 pitch tooth profile Extra-hard treatment for increased durability Includes set screw 7/7/26 cs