Universal upgrade 48P pinion gear,7 combinations for choose,total 5Pcs, with 3.175mm inner diameter
The 48P motor gear sets compatible with Arrma HPI kyosho losi axial traxxas tamiya associated 1/10 RC car monster truck buggy
Fit 3.175mm (1/8") Output 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