JK Products 48P Plastic Pinion Gear (3.17mm Bore) (31T)

JK Products 48P Plastic Pinion Gear (3.17mm Bore) (31T)
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JK Products plastic pinion gears are offered in a common 48P design with a wide array of teeth to suite the needs of performance R/C enthusiasts looking to get every last ounce of performance out of their vehicles. Thanks to its lightweight polymyer gear, enthusiasts will not only notice a smoother wear pattern with reduced friction on their drivetrain, but boosted performance thanks to lower rotating mass that provides incredible acceleration. Increased performance has never been so cost effective.


  • Ultra Lightweight Hybrid design Aluminum/Polymer
  • Molded teeth for ultra smooth gear mesh
  • Thinner profile
  • Quicker Motor RPM
  • Must have for Stock racing
  • Color coded for tooth count identification
    • Purple: 26 Tooth
    • Blue: 27 Tooth
    • White: 28 Tooth
    • Red: 29 Tooth
    • Green: 30 Tooth
    • Yellow: 31 Tooth
    • Pink: 32 Tooth
    • Black: 33 Tooth

This product was added to our catalog on May 14, 2020

Verified Owner
Thursday, Oct 15 2020 (1 week ago)
JK Products 48P Plastic Pinion Gear (3.17mm Bore) (31T)
Installed in a Kyosho Javelin re re. 17.5T HW motor and ESC, Kyosho upgrade spur gear.

The good: This gear works as advertised. Just by rolling the buggy on a flat surface, I could tell that rolling resistance was greatly reduced. Tested under power, the car was noticeably quicker.

The bad: The gear is strangely noisy. It may be an imperial and not metric pitch.

It also is very thin and I am not sure how long it will last, or whether it will cause my spur gear to develop weird wear patterns.

The baffling: Why did JK make the grub screw imperial and not metric?