GPM Racing Hardened Steel #45 Front Differential Ring Gear & Pinion Gear - 6pcs Set for Traxxas 1/7 Unlimited Desert Racer-85076-4 (UDR1200SF)
We are the importer of record — the price you see is the price you pay.
Handled by us in the UK under the Consumer Rights Act — no sending it overseas.
What our customers say
A selection of recent five-star reviews, as written.
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★★★★★
Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.
Robert, 22 September 2026
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★★★★★
Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.
Anna Abbott, 17 September 2026
-
★★★★★
Excellent service speedy delivery and good customer service
GLYN, 10 September 2026
-
★★★★★
Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.
Paul Jordan, 3 September 2026
-
★★★★★
Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!
Oliver Galustian, 23 July 2026
-
★★★★★
Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.
Simon, 19 July 2026
-
★★★★★
Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍
Mark Clucas, 30 January 2026
-
★★★★★
The customer service and advice were first class!
Steve Avery, 9 September 2025
-
★★★★★
The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.
Pete Goddard, 15 April 2025
-
★★★★★
Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.
Graham Rousseau, 10 February 2025
Key Specs
- Scale
- 1/7
- Weight
- 54 g
About this product
Front differential ring and pinion – technical overview
This aftermarket ring and pinion set is a direct-fit replacement for the TRAXXAS UNLIMITED DESERT RACER front differential, engineered to replace the stock gears with hardened steel #45 for more consistent tooth engagement and improved wear resistance under load.
The set is intended for installation inside the front gearbox and is suited to hobbyists seeking a material upgrade to support heavier duty use without altering front-end geometry. All mounting hardware required for reassembly is included in the kit.
Packing includes
- Ring Gear – 1pcs
- Pinion Gear – 1pcs
- Stainless Steel Flat Head Screw 2.5×10 – 4pcs
Original Name / Part No:
Part location: Inside front gearbox
Specifications
- Item: Front differential ring and pinion gear 6pcs set
- Material: Hardened steel #45
- Model Number: UDR1200SF
- Compatibility: TRAXXAS UNLIMITED DESERT RACER
A precision aftermarket option to increase front differential durability and maintain accurate gear mesh in demanding RC applications.
What are the expected benefits of hardened steel #45 in this application?
Hardened steel #45 offers improved surface hardness and wear resistance, helping the gear tooth form remain stable under continuous load and reducing the rate of pitting and profile degradation.
Are any setup adjustments recommended after fitting?
Verify backlash and tooth contact pattern, use a thin smear of appropriate gear grease, and torque fasteners to manufacturer guidance to avoid introducing preload or binding.
Is this kit compatible with aftermarket bearing or shim upgrades?
Yes, the kit is compatible with common bearing and shim upgrades for the front gearbox, but confirm dimensions before installation to ensure correct mesh and axial play. Write Product Review Please sign in your account before you can write any review.
Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.
What our customers say
A selection of recent five-star reviews, as written.
-
★★★★★
Ordered flishrc cobra. Communication was great. Ordered larger batteries but they were the wrong size. Olly shipped the right batteries and gave a refund for the difference I paid. Couldn't ask for more. Thanks for the help with the order.
Robert, 22 September 2026
-
★★★★★
Very helpful when the vehicle I wanted wasn't in stock. Very fast deliver too.
Anna Abbott, 17 September 2026
-
★★★★★
Excellent service speedy delivery and good customer service
GLYN, 10 September 2026
-
★★★★★
Great product and service. I enjoy buying from these guys. Thanks to radio-controllled.co.uk.
Paul Jordan, 3 September 2026
-
★★★★★
Dealt with customer services over an order I accidently placed, they were prompt and dealt with it will, completely refunded within a small window of time, thanks!
Oliver Galustian, 23 July 2026
-
★★★★★
Really good online rc store with some great products and sales on. The owner is very knowledgeable as well.
Simon, 19 July 2026
-
★★★★★
Product delivered promptly and in excellent condition 👍had very helpful and prompt responses from Olly to all my questions, I will definitely be using them again 👍
Mark Clucas, 30 January 2026
-
★★★★★
The customer service and advice were first class!
Steve Avery, 9 September 2025
-
★★★★★
The seller knew I was after one and very kindly informed me when they came back into stock so now have a Flywing Bell 206. Fantastic bit of kit. Well worth the wait.
Pete Goddard, 15 April 2025
-
★★★★★
Great service, car arrived fast and really well packaged. Also, I had a little problem....(which turned out to be me doing it wrong) but someone replied the same evening! Will definitely be buying from them again.
Graham Rousseau, 10 February 2025
