Hot Racing Steel Helical Diff Ring/Pinion Underdrive (10/35T) TRX4 [TRXF9510]

Steel Helical Diff Ring/Pinion Underdrive (10/35T) TRX4


Hot Racing 



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Hot Racing steel helical spiral Underdrive 35T/10T gear set for 1/10 Traxxas TRX-4


  • Precision machined helical spiral cut gears offer inherently greater strength and smooth operation than the factory Straight cut bevel gears
  • High carbon steel construction
  • Less vibration, less noise, less wear then stock straight cut bevel gears
  • 35T/10T provides 9% overdrive (vs stock 34T/11T) increases the wheel speed and is commonly used in the front end for digs
  • Works on front or rear. Use cases are typically front and rear at the same time, or Rear only to increase front digs

In the Package:

  • One (1) 35 tooth spiral cut ring gear
  • One (1) 10 tooth spiral cut pinion gear


  • Installation following kit manual
  • Medium threadlock (e.g. blue Loctite) if screws are threaded into metal
  • Hot Racing SPL10G05 high temp grease recommended


  • Replaces TRA8288
  • Option - overdrive the front axle, and underdrive the rear axle
  • Combinations One. TRXF312 in the front and TRXF9411 in the rear
  • Combinstion Two. TRXF9411 in the front and TRXF9510 in the rear
  • Combinstion Three TRXF312 in the front and TRXF35810 in the rear

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