GPM Racing 4140 Carbon Steel + 7075 Alloy Front & Rear Complete Differential for Traxxas 1/10 Slash 4x4 Lcg (SLA1337FR)
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
- 130 g
About this product
Precision matched front and rear differentials
The SLA1337FR differential set delivers matched front and rear units engineered as an aftermarket drivetrain replacement for TRAXXAS 4X4 platforms. Each assembly is supplied fully assembled with spiral-cut internal gearing, CNC-machined 7075-T6 aluminium alloy cases and medium carbon 4140 steel inner and outer gears chosen to balance wear resistance and weight for hobby applications.
Installation is intended as a direct bolt-in swap for the TRAXXAS 1/10 and 1/8 4WD models listed below, reducing bench time by supplying finished assemblies. Differential fluid is not included and must be filled during installation to tune slipper and limited-slip behaviour to the vehicle setup.
Packing includes
- Rear Complete Differential – 1pcs
- Stainless steel gasket 0.2x8x13 – 1pcs
- Stainless steel gasket 0.3x8x13 – 1pcs
- Part location – Front and rear differential
Compatible Models
- TRAXXAS 1/10 SLASH 4X4
- TRAXXAS 1/10 RUSTLER 4X4 VXL-67076-4
- TRAXXAS-XO-01-64077
- TRAXXAS-SLASH 4X4 LOW-CG-68086-21
- TRAXXAS NOS DEEGAN 38 FORD FIESTA RALLY-74054-6
- TRAXXAS 1/10 4WD HOSS 4X4 VXL 3S-90076-4
- TRAXXAS 1/10 FORD F-150 RAPTOR R-101076-4
- TRAXXAS 1/8 Jato 4X4 VXL-4S-90386-4
- TRAXXAS 1/8 Jato 4X4 BL-2S-90154-4
- TRAXXAS 1/10 Ford Fiesta ST Rally-74064-4
- TRAXXAS 1/10 Ford Fiesta ST Rally Brushless-74154-4
- TRAXXAS 1/10 Ford Fiesta ST Rally-74276-4
- TRAXXAS 1/10 Ford Fiesta ST Rally-74054-4
- TRAXXAS 1/10 Rustler 4X4 Brushless -67164-4
- TRAXXAS 1/10 Rustler 4X4 Ultimate-67097-4
- TRAXXAS 1/10 Rustler 4X4 VXL-67376-4
- TRAXXAS 1/10 Slash 4X4 Ultimate-68077-4
- TRAXXAS 1/10 Slash 4X4 VXL-68086-4
- TRAXXAS 1/10 Slash 4X4 Brushless-68154-4
- TRAXXAS 1/10 Slash 4X4 Ultimate-68277-4
- TRAXXAS 1/10 Slash 4X4 VXL-68286-4
- TRAXXAS 1/10 Stampede 4X4 Brushless-67154-4
- TRAXXAS 1/10 Stampede 4X4 VXL-67086-4
- TRAXXAS 1/10 Stampede 4X4 VXL-90376-4
- TRAXXAS 1/7 AWD XO-01-64077-3
Use the SLA1337FR assembled front and rear differentials to replace worn components or to standardise drivetrain hardware; inspect gear lash and select appropriate diff oil for the intended power and terrain.
What are the case tolerances?
Cases are CNC-machined to tight tolerances to ensure consistent gear alignment; verify mesh and lash during assembly to finalise setup.
What service items should I keep on hand?
Keep spare stainless gaskets and the correct diff oil viscosities for servicing; replace gaskets when opening housings to maintain seal integrity.
Are the gears heat treated?
Internal gears are medium carbon 4140 steel, offering a balance of hardness and toughness suitable for typical hobby and performance loads.
Recommended initial diff oil for testing?
Start with a mid-weight silicone diff oil to assess behaviour, then adjust viscosity based on traction and slip under your driving conditions. 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
