39t/10t Helical Rear Gear Set Mini Xrt

Made by Hot Racing · SMXRT9390R

$42.88

Description

Hot Racing High Torque steel helical spiral 39T/10T rear gear set for Mini XRT or Mini-T with Center Differential or Slipper Clutch
The 39/10T gear set is the stock gear ratio.

FEATURES:

- Precision machined helical spiral cut gears offer inherently greater strength and smooth operation than the factory bevel gears.
- High carbon steel construction
- Stronger than the stock bevel gears
- More torque can be transmitted through a physical gear with fewer teeth ratio

YOU WILL RECEIVE:

- One (1) 39 tooth diff spiral cut ring gear
- One (1) 10 tooth spiral cut Short pinion gear

REQUIREMENTS:

- Installation following kit manual must replace as a set.
- Medium threadlock (blue threadlocking compound) if screws are threaded into metal
- Hot Racing SPL10G05 high temp grease recommended for the diff gear.
- Use Silicone Diff Fluid for Gear Diffs inside.

SPECIFICATIONS:

- Weight: oz (g)

COMMENTS:

- Replaces TRA10780 and TRA10762
- Must replace as a set

description revised by: DB November 15, 2025

Manufacturer information

Hot Racing

140 Hayward St

Manchester, NH 03103

https://www.hot-racing.com/

All warranties and guarantees, including missing items, are handled directly by the manufacturer of that item. Should there be any problem with a product, you (The Customer) will need to contact the manufacturer to obtain service. Manufacturer contact information is available upon request. We must be contacted for a return authorization number before returning items for any reason. We cannot accept returned items that have been opened or are not in their original sealed factory containers.

Compatible vehicles (2)

Mini Maxx

Mini XRT

Additional details

Country of origin	China
Package dimensions	4.00" × 3.00" × 0.49" 10.16 cm × 7.62 cm × 1.24 cm
Part numbers	840353335028 SMXRT9390R HRASMXRT9390R
Shipping weight	1.21 ounces 34.34 grams 0.08 pounds

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov