RC Overhaul Helical Gears Fr Rr 24T 12T TRX-4M Transmission G-RCO-TRX020

• Manufacturer: RC Overhaul
• Part Number: G-RCO-TRX020
• EAN Code: 5055320229698
• Product Type: Helical Ring and Pinion Gears
• Ring Gear Teeth: 24T
• Pinion Gear Teeth: 12T
• Gear Ratio: 2:1
• Material: Machined Steel
• Gear Type: Helical
• Scale Compatibility: 1/18
• Vehicle Platform Compatibility: Traxxas TRX-4M front and rear differentials
• Compatible Models: Traxxas TRX-4M Ford Bronco RTR (Blue, Red, Orange, Black, White, Area 51), Traxxas TRX-4M Land Rover Defender RTR (Green, Light Blue, Pink, Silver, Tan, Black), Traxxas TRX-4M Chevrolet K10 High Trail Truck (Blue, Black, Red), Traxxas TRX-4M Ford F-150 High Trail Truck (Blue, Black, Brown)
• Application: Front and rear gearbox upgrade
• Transmission Type: Standard ratio upgrade (same as stock parts)
• Installation: Drop-in replacement for stock gears
• Features: Precision machined, increased durability, smoother operation, reduced vibration

Overview

Upgrade your Traxxas TRX-4M trail crawler with the RC Overhaul Helical Gears Fr/Rr 24t/12t (G-RCO-TRX020), a precision-engineered transmission upgrade designed to deliver superior durability and reliability on the trail. These machined steel ring and pinion gears are perfect for RC enthusiasts in the UK who demand the best performance from their 1/18 scale RC crawler. Whether you're tackling rocky terrain or navigating technical trails, these helical gears provide the strength and precision your TRX-4M needs to perform at its best.

If you're serious about RC crawling, you understand that the transmission is the heart of your vehicle's drivetrain. The stock gears that come with your Traxxas TRX-4M Ford Bronco, Land Rover Defender, Chevrolet K10, or Ford F-150 are adequate for casual use, but if you're regularly pushing your RC car to its limits, upgrading to these RC Overhaul helical gears is a smart investment. These aren't basic plastic gears—they're meticulously machined from steel, engineered to withstand the stresses of serious trail driving whilst maintaining the exact same ratio as the original stock components. This means you get a drop-in upgrade with no need to recalibrate your vehicle's performance characteristics.

RC Model Shop stocks authentic RC Overhaul components for customers across the UK who want genuine, quality upgrades for their Traxxas vehicles. These helical gears represent outstanding value for money and are an essential consideration for anyone looking to extend the lifespan of their TRX-4M's drivetrain whilst improving overall durability and reliability on demanding terrain.

Key Features

• Helical Ring and Pinion Set Configuration — The 24T ring gear and 12T pinion gear combination provides a 2:1 gear ratio that delivers balanced torque and speed characteristics. Helical gears offer smoother, quieter operation compared to spur gears because of their angled teeth design, which means less noise pollution during your RC sessions and reduced vibration throughout the transmission system.
• Precision Machined Steel Construction — These gears are manufactured from machined steel rather than plastic, providing exceptional strength and durability. Steel gears can withstand significantly higher loads and stress compared to standard plastic alternatives, making them ideal for serious RC crawlers and bashers who frequently encounter rocks, obstacles and challenging terrain that puts heavy demands on the drivetrain.
• Same Ratio as Stock Kit Parts — By maintaining the identical 24T/12T ratio as the factory-standard gears, you can simply drop these upgraded components into your TRX-4M without any need for recalibration, tuning adjustments, or performance modifications. Your vehicle will handle exactly the same, but with dramatically improved durability and longevity in the transmission system.
• Transmission Beef-Up Solution — These gears are specifically designed to strengthen and reinforce your TRX-4M's transmission, reducing wear on internal components and extending the overall lifespan of your RC car's drivetrain. If you've experienced gear slippage or transmission noise in the past, upgrading to these machined steel gears will provide noticeable improvements in reliability and consistency.
• Universal TRX-4M Compatibility — These gears are engineered to fit all variants of the Traxxas 1/18 TRX-4M platform, including the Ford Bronco (available in Blue, Red, Orange, Black, White, and Area 51 colours), Land Rover Defender (Green, Light Blue, Pink, Silver, Tan, and Black), Chevrolet K10 High Trail Truck (Blue, Black, and Red), and Ford F-150 High Trail Truck (Black, Brown, and Blue), making them a versatile upgrade option for any TRX-4M owner in the UK.

Technical Performance

The RCO Helical Gears Fr/Rr 24t/12t TRX-4M represent a significant step up in transmission engineering and durability compared to standard plastic gears supplied with RTR (ready to run) RC vehicles. Manufactured from hardened machined steel, these components are engineered to absorb and distribute the rotational forces generated by your brushless motor and ESC system far more effectively than plastic alternatives. The helical gear tooth design—where teeth are angled rather than aligned perpendicular to the gear axis—provides multiple points of contact between meshing gears, resulting in smoother power delivery, reduced backlash, and quieter operation across a broader range of throttle inputs. This is particularly valuable for 1/18 scale RC crawlers like the TRX-4M, which operate across widely varying speeds depending on terrain and driving conditions. The 24T ring gear and 12T pinion maintain a 2:1 transmission ratio, delivering a balance between torque multiplication for climbing and obstacle negotiation, and final drive speed for traversing open terrain. By utilising the same ratio as stock components, these gears integrate seamlessly into your existing TRX-4M transmission assembly, whether you're running a standard motor configuration or have upgraded to a higher-performance brushless setup. The steel construction ensures consistent performance under the demanding loads experienced during rock crawling, technical manoeuvres, and aggressive trail driving, whilst the machined precision means tolerances are held to very tight specifications, eliminating the slack and play that develops in plastic gears over time.

What's in the Box

• RC Overhaul Helical Gears Fr/Rr 24t/12t set (24T ring gear and 12T pinion gear)
• Precisely machined steel ring and pinion gears ready for installation into your TRX-4M differential

Frequently Asked Questions

• Will these helical gears fit my Traxxas TRX-4M? — Yes, these RC Overhaul gears are specifically engineered for all variants of the Traxxas 1/18 TRX-4M platform, including the Ford Bronco, Land Rover Defender, Chevrolet K10, and Ford F-150 High Trail Truck models. They fit directly into the front and rear differentials and maintain the stock 24T/12T ratio, so installation is straightforward and requires no modifications to your vehicle.
• What is the advantage of helical gears over spur gears? — Helical gears offer several advantages including quieter, smoother operation due to multiple teeth making contact simultaneously, reduced vibration throughout the transmission, improved load distribution, and enhanced durability under stress. The angled tooth design of helical gears means more gradual engagement, which reduces shock loads and extends component lifespan significantly compared to spur gears.
• Are these gears stronger than the stock plastic gears? — Absolutely. These machined steel gears are substantially stronger than the plastic gears supplied with RTR TRX-4M vehicles. Steel can withstand far higher torque loads and is resistant to wear, cracking, and failure that commonly occurs with plastic gears during aggressive driving or when upgrading to more powerful motor configurations. If you regularly bash your RC crawler or have experienced transmission problems before, upgrading to steel gears is highly recommended.
• Do I need to change anything else in my drivetrain when installing these gears? — No, because these gears maintain the exact same 24T/12T ratio as the factory components, you can perform a simple swap without any modifications to your vehicle's setup. Your TRX-4M will perform identically in terms of speed and torque characteristics, but with dramatically improved durability and reliability.
• Will upgrading to these gears improve my RC crawler's performance? — These gears won't increase your vehicle's top speed or torque output compared to the stock gears, as they maintain the same transmission ratio. Their primary benefit is durability and longevity—you'll experience fewer transmission failures, less wear on internal components, and more consistent performance over extended use periods. If you're looking for performance improvements, you would need to change the gear ratio itself, but if you want reliability and strength, these helical gears are exactly what you need.
• Can beginners install these gears themselves? — Installation requires some mechanical skill, as you'll need to disassemble the front and rear differentials on your TRX-4M and carefully replace the ring and pinion gears. If you have experience working on RC vehicles and basic mechanical knowledge, this is an achievable upgrade. However, if you're inexperienced with RC maintenance, you might prefer to have a professional technician or experienced friend handle the installation to ensure everything is set up correctly.
• Are these gears compatible with upgraded brushless motors? — Yes, these machined steel gears are actually recommended if you've upgraded to a high-performance brushless motor or ESC system. Steel gears are far better equipped to handle the increased power delivery from brushless setups, whereas plastic gears may strip or fail under the elevated torque loads. If you're running a brushless TRX-4M, these gears are an essential upgrade.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the RCO Helical Gears Fr/Rr 24t/12t TRX-4M G-RCO-TRX020 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.

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