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Differential

UltraLite Diff kit for Stock TRX Gears

Original price was: $178.00.Current price is: $115.00.
Part Number: 13549

The UltraLite Differential Housing Kit strengthens one of the biggest weak points in the Maxx drivetrain by replacing flexible plastic differential cases with precision-machined 7075-T6 aircraft aluminum housings. Designed to work with your existing Traxxas® gears, the UltraLite system delivers increased strength, oversized bearings, and a future upgrade path to the SuperMaxx 7.5 Differential System—all with only a minimal increase in weight.

Available on Backorder

Available on backorder

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Description

UltraLite Differential Housing Kit for Stock Traxxas® Gears

The stock Maxx differential gears have evolved over the years and are surprisingly durable when properly set up. Unfortunately, the same cannot always be said for the differential housings.

Under high loads, plastic differential cases can flex, allowing the ring and pinion gears to separate. Once gear mesh is compromised, the pinion can skip teeth and rapid gear failure often follows. Some aftermarket housings solve the flex issue but introduce significant weight penalties while still failing to address bearing load capacity.

The UltraLite Differential Housing Kit was developed to solve these problems while providing a future upgrade path to the SuperMaxx 7.5 Differential System.

This kit allows you to run your existing stock Traxxas® gears in the same UltraLite housing used by the SuperMaxx 7.5 differential system, giving you increased strength today and the option to upgrade to full 7.5 gears later without replacing the housings.

Kit Includes

  • 2x SuperMaxx UltraLite Differential Housings
  • 8x Large Rubber-Sealed Bearings
  • Complete Setup Kit
  • Detailed Setup Instructions
  • Hardware required to equip a complete truck

Features

  • Compatible with stock Traxxas® differential gears
  • Uses the same housing as the SuperMaxx 7.5 Differential System
  • Precision machined from 7075-T6 aircraft aluminum
  • Natural polished finish
  • Large-capacity rubber-sealed bearings
  • Compatible with both T-Maxx and E-Maxx ring gear orientations
  • Future upgrade path to 7.5 differential gears

Premium Construction

Each UltraLite housing is precision machined from premium 7075-T6 aircraft aluminum and polished to a high-luster finish.

The housing incorporates hardened steel Helicoil inserts in the mounting holes, providing threads that are exceptionally durable and highly resistant to stripping.

Massive Bearing Upgrade

One of the key advantages of the UltraLite system is its use of significantly larger bearings.

These bearings provide more than twice the load-carrying capacity of the stock bearings, helping to withstand the loads generated by today’s high-power engines and brushless systems while improving durability and service life.

Rubber-sealed bearings are used throughout the kit for maximum contamination resistance and long-term reliability.

Lightweight Design

Despite being machined from billet aluminum, the UltraLite housings weigh only about 10 grams more than the stock plastic cases.

Even when equipped with larger bearings and upgraded differential components, the total weight increase remains modest compared to many conventional aluminum differential systems, while offering significantly greater strength and versatility.

Future-Proof Upgrade Path

One of the biggest advantages of the UltraLite system is flexibility.

You can install the housings today using your existing stock gears or compatible aftermarket gearsets. If you later decide to upgrade to the SuperMaxx 7.5 Differential System, the same UltraLite housings can be reused, minimizing future upgrade costs.

Installation Notes

Installation requires:

  • Premium quality grease
  • Blue thread-locking compound (Loctite®)

These items are not included.

Detailed setup instructions are included. As with any precision differential assembly, proper gear setup and shimming are essential for optimum performance and long service life.

Special Offer

For a limited time, qualifying direct orders may receive a complimentary Kippster Kupp and Pin.

Use of the Kippster upgrade requires enlarging the ring gear mounting holes to 3 mm. Offer availability is limited and may change without notice.

Important Disclaimer

This product is NOT a Traxxas® product, is NOT manufactured by Traxxas®, and is NOT represented as a Traxxas® product. This is an independently designed and manufactured drivetrain component and is not endorsed by, sponsored by, or affiliated with Traxxas® in any way.

Traxxas®, T-Maxx®, and E-Maxx® are trademarks of their respective owners. Use of these trademarks is solely for identification and compatibility purposes.

Additional information

Weight 1 oz
Dimensions 1 × 1 × 1 in
Manufacturer

Unlimited Engineering

Class

Remote Control Trucks

Fits

Traxxas T&E-Maxx