Universal 3.175mm To 5mm Motor Gear Adapter Sleeve Set For 1/10 RC Cars Boats Planes Stainless Steel Pinion Reducer For Traxxas Redcat ARRMA Axial HSP HPI WLtoys Motors 3650 550 540 Brushed And Brushless

3.175mm to 5mm RC Motor Gear Adapter Sleeve 6-Pack
✔️ 3.175mm shaft to 5mm pinion sleeve, stainless 6-pack set

This universal adapter sleeve converts a 3.175mm motor shaft to drive 5mm bore pinions, expanding compatibility across popular 1/10-scale RC cars, boats, and planes. It’s ideal for upgrading kits from brands like Traxxas, Redcat, ARRMA, Axial, HSP, HPI, and WLtoys on both brushed and brushless motors.

✅ Material: stainless steel for strength and wear resistance
✅ Inner diameter: 3.175 mm (0.125 in)
✅ Outer diameter: 5.0 mm (0.197 in)
✅ 6-pack set provides spares for multiple vehicles
✅ Easy installation on 3.175mm shafts and 5mm pinion bores

💡 What is an RC motor gear adapter sleeve used for in 1/10 scale upgrades? This handy upgrade helps you swap pinions and tune gear ratios for smoother acceleration and better torque control. - Expands pinion compatibility from 3.175mm shafts to 5mm pinions - Improves power transfer and reduces vibration on both brushed and brushless motors - Stainless steel construction provides long life in rugged RC use