Inferno MP Series MP11e Steel Pinion 21T 0.8M - Kyosho PNGS0821  [KY-PNGS0821]

Direct steel pinion for MP-series drivetrains

The Kyosho PNGS0821 is a steel pinion gear supplied as a direct replacement part, specified in the product name as 21T/0.8M/?5.0 and intended for use with Inferno MP Series components such as the MP11e. This is an RC-scale accessory manufactured for drivetrain tasks, not for full-size vehicle use.

Manufactured as a no-nonsense steel spare, this pinion prioritizes wear resistance during regular RC operation and aims to deliver predictable tooth engagement for steady gear meshing. The 21-tooth count and 0.8 module correspond with common motor pinion standards used in Kyosho MP-series setups; treat the "?5.0" marking as supplied information.

Installation notes: confirm pinion bore and set-screw alignment before finalising mesh, check motor shaft fit and secure the pinion with the correct hex screw torque, and verify clearance with the spur gear to avoid premature wear. When tuning gear ratios, altering the pinion tooth count will directly affect acceleration and top speed, so pair this pinion with the appropriate spur gear and test with conservative settings first.