TUDR9333R 33T 13T Steel Helical Diff Ring And Pinion Rear Gear Set For UDR RC Car Upgrade With CNC Spiral Cut Gears For Maximum Strength And Smoother Beefed Up Performance

Upgrade UDR RC with CNC helical diff ring & pinion set
✔️ Includes 33T ring gear and 13T pinion for stock 33/13 ratio

This Hot Racing steel helical rear gear upgrade is designed for the TRA UDR, replacing the factory bevel gears with CNC spiral cut steel for maximum strength and smoother power transfer. The kit includes a 33T diff ring gear and 13T pinion to maintain the stock 33T/13T ratio, ensuring compatibility with your existing drivetrain. Replace TRA 8579 by installing as a complete set per the manual.

✅ 2-piece upgrade: 33T ring gear and 13T pinion for stock 33/13 ratio
✅ High carbon steel CNC spiral cut gears provide stronger, smoother mesh
✅ Replaces TRA 8579 in UDR diff assembly
✅ Blue threadlock on metal screws and recommended diff grease for best results

💡 What is a diff ring and pinion set used for in RC cars and why pick CNC steel?

- Handy upgrade for tougher terrain and higher torque handling
- Improves gear mesh and smoothness versus stock bevel gears
- Pairs well with ceramic bearings or sealed ball bearing upgrades for smoother spins
- Good choice for UDR builds that see heavy use in rough terrain✝️