GPM Racing Medium Carbon Steel Transmission Gear Set 13T/43T for Losi Team Losi 1/8 LMT 4WD Solid Axle Monster Truck (LMT1201S)
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
- 1/8
- Weight
- 40 g
About this product
Centre transmission gear set for LOSI LMT solid axle applications
This precision medium carbon steel 13T pinion and 43T spur pairing is produced for like-for-like replacement of the centre transmission gearbox in LOSI LMT 4WD solid axle monster trucks. Components are dimensioned to replicate stock gear geometry and ensure predictable mesh and shaft engagement.
Engineered for durability and serviceability, the set is intended to restore correct backlash and reduce wear-related noise in the centre gearbox. During installation confirm bearing seating, axial clearance, and shaft concentricity to achieve the specified tooth contact pattern.
Packing includes
- Transmission gear set – 2pcs
Original Name / Part No:
LOS242040+LOS242043
Compatible Models
- LOSI-1/8 LMT 4WD SOLID AXLE MONSTER TRUCK-LOS04022
- LOSI-LMT SOLID AXLE MONSTER TRUCK-LOS04021
- LOSI-TLR TUNED LMT SOLID AXLE MONSTE-LOS04027
- LOSI-LMT 4WD SOLID AXLE MEGA TRUCK-LOS04024
For workshop-level centre gearbox repairs on LOSI LMT platforms, this medium carbon steel 13T/43T kit provides consistent fitment and predictable mesh outcomes when bearings and shaft tolerances are verified during assembly.
What inspection steps are recommended before fitting?
Inspect bearing bores, confirm shaft diameters, clean mating surfaces, and remove burrs. Correct any play in the gearbox before installing the new gears.
How should backlash be set for reliable operation?
Adjust gearbox spacing or add shims to achieve minimal but free tooth contact. Verify under manual rotation and fine tune under low motor load to prevent binding.
What material handling precautions apply?
Medium carbon steel benefits from corrosion prevention; store parts dry and consider light lubrication during assembly to prolong service life.
When should I replace bearings with the gears?
Replace bearings if there is any detectable play or roughness. New bearings ensure correct alignment and maximise the lifespan of the replacement gear set. 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
