Kyosho 21T 0.8M 5mm RC Pinion Gear - PNGS0821

The Kyosho PNGS0821 is a 21-tooth, 0.8 module pinion gear with a 5mm bore, designed for use in Kyosho RC cars that run a 0.8M gear pitch driveline. Pinion gears are a critical part of the drivetrain, transferring power from the motor shaft to the spur gear, and selecting the correct tooth count and module is essential for proper mesh and reliable performance. With a 5mm bore, this pinion is sized to suit motors with a 5mm shaft — always confirm your motor shaft diameter before ordering.

Key Features

• 21-tooth pinion gear for a moderate gear ratio suited to a balance of speed and torque
• 0.8 module pitch — must be paired with a 0.8M spur gear for correct mesh
• 5mm bore diameter to fit motors with a 5mm output shaft
• Direct Kyosho replacement part, style code KYOPNGS0821, ensuring correct fitment for compatible Kyosho models
• Changing pinion tooth count is a straightforward way to adjust your final drive ratio without changing the spur gear

Compatible With

• Kyosho RC cars and buggies specifying 0.8 module pinion gears with a 5mm motor shaft bore
• Must be used with a matching 0.8M module spur gear

What's Included

• 1x Kyosho 21T 0.8M 5mm pinion gear (PNGS0821)