GPM Racing Steel 10T Pinion Gear - 2pcs Set for Traxxas 1/10 TRX4 (TRX4010T)
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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
- 10 g
About this product
Precision steel 10T pinion for TRX4 applications
This 2pcs steel 10T pinion set is engineered for TRAXXAS TRX4 TRAIL CRAWLER applications, model TRX4010T. CNC finished from hardened steel #45, the gears are specified for motors with a 3.175mm centre bore and 0.8mm tooth pitch to deliver consistent gear engagement under low-speed, high-torque loads.
Engineering and fit: the pinions are profiled to mate with 32 pitch spur gears at a 10-tooth count; confirm spur geometry and motor shaft dimensions before installation. The assembly includes the 3×3 screw shaft required to clamp the pinion to the motor shaft in many TRX4 motor configurations for direct replacement.
Drive characteristics: altering pinion tooth count adjusts the transmission ratio, affecting torque multiplication and top speed. For demanding crawling lines a reduced tooth count increases wheel torque; ensure correct mesh, axial clearance, and secure fastener torque to maintain service life.
Maintenance and inspection: deburr motor shafts, verify precise seating of the 3.175mm centre bore, and torque the fixing screw to a controlled setting to protect the shaft and teeth. Perform an initial inspection of gear mesh and retorque the fixings after the first running session.
This item is compatible with
- TRAXXAS TRX4 Defender Trail Crawler
What exact motor bore and pitch does this part require?
Specification is a 3.175mm centre bore with 0.8mm tooth pitch, intended for engagement with a 32 pitch spur in a 10T pinion arrangement.
Does the kit provide the fastening hardware?
The product includes the 3×3 securing screw to mount the pinion onto compatible motor shafts, removing the need for additional standard fasteners in many installations.
Why is hardened steel #45 specified for this pinion?
Hardened steel #45 provides a balance of toughness and wear resistance suitable for the low-speed, high-torque regimes of trail crawling, reducing profile wear and maintaining mesh precision. 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
