Fits for 3.175mm (1/8 inch) Shaft Size Motors, please make sure the RC motor shaft have the same diameter, Also make sure the spur gear and pinion gear have the same pitch, otherwise the teeth won't mesh.
Tooth Pitch: 48 Pitch; Inner Diameter: 3.175mm
Comes with 22T 23T 24T 25T 26T pinion gears to meet your different gearing ratio needs.
Compatible with Arrma HPI Kyosho Losi Axial Traxxas Tamiya Team Associated 1/10 RC car monster truck buggy
Made Of Quality Aluminum Alloy, great finish and hardness, easy install.