TKR8151 – Differential Ring Gear (CNC, 40t, use with TKR8152)


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SKU: TKR8151 Category: Tags: ,

Product Description

TKR8151 – Differential Ring Gear (CNC, 40t, use with TKR8152)

These gears are CNC machined from high-quality steel, then hardened for durability.  They will provide smoother and more efficient operation than our standard gears.  They also run quieter than the standard gears.  The ring and pinion should be run as a set (TKR8151 and TKR8152) and should not be mixed with any other gear sets.

This diff ring gear and the 12t pinion gear (TKR8152) are standard with the EB48.4 vehicle.


  • True straight cut design for maximum efficiency
  • Smoother and quieter than our standard gears
  • CNC hardened steel construction


There are performance advantages when overdriving the front of a vehicle, especially with loose track conditions. Since the front tires will be driven slightly faster, the front tires will pull the vehicle and the rear will push less.  This can generate more on power traction on low-grip tracks, resulting in additional corner speed and increased rear traction.  Overdrive is typically not recommended for medium to high grip tracks.

Please reference the following chart to utilize overdrive on variants of the EB48, NB48, SCT410, ET48, NT48 EB48SL and MT410 vehicles.

Ring Gear Pinion
Front (12/39) TKR8151B TKR8152B
Rear (12/40) TKR8151 TKR8152


Vehicle Compatibility

  • TKR8151 - Differential Ring Gear (CNC, 40t, use with TKR8152) is included with the EB48.4 kit and can be used as a replacement part for that vehicle.
  • This can be used with the EB48.2, EB48.3, EB48SL, ET48.3, NB48.4, SCT410 and SCT410.3 vehicles and should be a direct replacement for the stock part or used as a new feature. Please use the instruction manual for the kit(s) listed to verify compatibility and no additional items are necessary before purchasing.

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Shipping Specs.

Weight 0.06 lbs
Dimensions 2.5 × 2.5 × .25 in