Kyosho Steel Pinion Gear 31T 48DP – UM331

The Kyosho Pinion Gear (31T, 48DP) Steel UM331 offers a durable, precise gearing option for radio-controlled models. With a 31-tooth count and 48 pitch, this steel pinion is designed to provide consistent mesh and long service life when matched with the correct spur gear pitch.

Part number K.PNGS4831 helps you identify the exact component for maintenance, tuning, or gearing changes. The 31T size enables fine ratio adjustments to suit track conditions or driving style, while the robust steel construction prioritises wear resistance over extended running.

Gearing Notes

• Increasing pinion tooth count (e.g., moving to 31T) generally raises top speed and reduces acceleration.
• Higher tooth counts can increase motor load and heat; monitor temperatures during setup.
• Always match the pitch: this pinion is 48DP and should be paired with a 48DP spur gear.

Suggested Compatibility

• 48DP spur gear drivetrains in radio-controlled models (confirm specifications for your vehicle and motor).