Powerhobby 12T 30T Gearbox Belt Drive Gear Set Silver FOR Traxxas TRX-4 TRX-6 Tires Accessories (2) Blue AluminumWide Track Spacers

(2) Blue AluminumWide Track Spacers

Kyosho lists these across a broad range: Inferno MP10 and MP10 Spec A

SPECS: Height: 4" to 6" (10cm to 15cm)

1x Adjustable Drop Hitch (Long) (Black)

RJ Speed 5730 Legends Diff Axle 1/10 Pan Car Top Fuel Legends Sprinter Spec 10

Powerhobby 12T 30T Gearbox Belt Drive Gear Set Silver FOR Traxxas TRX-4 TRX-6 Tires Accessories (2) Blue AluminumWide Track SpacersPowerhobby 12T 30T Gearbox Belt Drive Gear Set Silver FOR Traxxas TRX 4 TRX 6 The main gear is 12t, the driven gear is 30t, with non destructive mounting screws, which greatly reduces the original noise and flexibility Due to the narrow space, you need to preset the active gear into the pulley, and finally put in the motor gear output