Arrma Pinion Gears for RC Cars & Trucks

Dial in your gearing with our wide range of precision pinion gears for RC cars, buggies and trucks. We stock 48DP, 64DP and 32DP (imperial), plus Mod 0.5, 0.6, 0.8 and 1.0 (metric) to suit popular platforms. Always match the pinion pitch/module to your spur gear—don’t mix DP and Mod. Choose materials to suit your driving: lightweight aluminium for efficient club racing, hardened steel for durability and high‑power brushless setups, and brass for running‑in. Common motor shaft sizes are 3.175mm (1/8") for most 1/10 motors and 5mm for many 1/8 systems—check your motor before ordering. We carry secure grub‑screw and clamping styles; use a dab of medium threadlock and set a smooth mesh with a small amount of backlash (the paper method works well). Gearing tips: fewer teeth give more punch and cooler temps; more teeth increase top speed but add load—monitor motor and ESC temperatures. Shop leading brands including Schumacher, Fastrax, Core RC, Traxxas and HPI, with tooth counts from 10T upwards. With large UK stocks, friendly expert support and next‑day delivery options, Wheelspin Models makes it easy to find the right pinion and get back on track fast.