Kyosho Steel 21T 48DP RC Pinion Gear - PNGS4821

The Kyosho PNGS4821 is a steel pinion gear with a 21-tooth count and 48DP pitch, designed for use in Kyosho RC cars that run a 48 pitch drivetrain. Pinion gears are a critical part of the power transmission system, transferring torque from the motor shaft to the spur gear, and using the correct tooth count and pitch is essential for reliable performance. Steel construction gives this pinion gear greater durability compared to plastic alternatives, making it a solid choice for regular runners and competitive use alike.

Key Features

• 21-tooth (21T) configuration — selecting the right tooth count affects gear ratio and should be matched to your spur gear and motor setup
• 48DP (diametral pitch) — must be paired with a 48DP spur gear for correct mesh and engagement
• Steel construction offers greater wear resistance than nylon or plastic pinion gears
• Direct replacement part for Kyosho RC models that use the 48 pitch gear system
• Kyosho part number KYOPNGS4821 for straightforward reordering and compatibility checks

Compatible With

• Kyosho RC car models using a 48DP (48 diametral pitch) gear system
• Requires a matching 48DP spur gear for correct installation

What's Included

• 1x Kyosho PNGS4821 Steel Pinion Gear 21T 48DP