GPM Racing Medium Carbon Steel Transmission Gear Set 13T/43T for Losi Team Losi 1/8 LMT 4WD Solid Axle Monster Truck (LMT1201S)

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. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM's factory, so please allow around 14 days for dispatch.