GPM Racing Aluminium Rear Gear Box Mounts-12pcs Set for Traxxas 1/10 TRX4 (TRX4013C)
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.
-
★★★★★
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
Key Specs
- Scale
- 1/10
- Weight
- 25 g
About this product
Precision rear gearbox mounts for TRX4
The TRX4013C kit is a 12pcs aluminium mounting solution engineered for the TRAXXAS TRX4 Trail Crawler chassis, intended as a durable aftermarket replacement for rear gearbox mounting points. Machined from 6061 T6 aluminium, these components provide a rigid interface between the rear gearbox and rear knuckle arms to help preserve drivetrain alignment under crawling loads.
The parts employ a C-clamp style contact to engage the rear knuckle arms, simplifying setup during installation and reducing dependence on plastic locating tabs. The kit is dimensioned for hobby-grade RC vehicles and is designed to mate with TRX4 rear hardware as a direct replacement component.
Hardware supplied with the kit is stainless steel and includes flathead and cap screws to complete the installation: 2.5×10 – 6pcs stainless steel flathead screws and 2.5×16 – 4pcs stainless steel cap screws. Use standard hand tools and a 2.5mm hex driver to torque the fasteners evenly and verify drivetrain alignment after fitting.
Service notes: confirm suspension and knuckle clearance during test fitting and recheck fastener torque after a brief run to ensure the C-clamp interface has seated correctly. These mounts are intended to deliver a more stable mounting location for tuning and maintenance on the TRX4 Trail Crawler platform.
Does the kit require modification to the chassis?
No chassis modification is expected; the parts are sized to fit the TRX4 rear gearbox mounting points as a direct replacement for the stock brackets.
What inspection should I perform after installation?
Check that clamped faces clear suspension travel, confirm even torque on all supplied screws, and verify driveline alignment through a short test run.
Are the supplied screws corrosion resistant?
Yes, the kit includes stainless steel fasteners: 2.5×10 – 6pcs flathead and 2.5×16 – 4pcs cap screws to complete the installation. 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
