Traxxas TRX-4M Metal Axle Ring and Pinion Gears Front Rear TRX9779

Overview

Upgrade your Traxxas TRX-4M crawler with the ultimate drivetrain enhancement. The Traxxas Gears, axle (metal, front & rear) TRX9779 are purpose-engineered metal ring and pinion gears designed to deliver superior durability and performance compared to standard plastic alternatives. Whether you're an experienced RC enthusiast running an RC car in the UK or a dedicated trail crawler looking to maximise drivetrain longevity, these front and rear metal axle gears represent a critical upgrade for serious TRX-4M owners.

These metal axle gears are the perfect companion upgrade for the 9756 hardened-steel axle set, combining to create an incredibly robust drivetrain system capable of handling aggressive driving, challenging terrain, and extended run times without performance degradation. If you've experienced gear wear or damage with plastic components, or simply want to future-proof your TRX-4M's drivetrain, this upgrade delivers the reliability and longevity that separates casual drivers from committed RC enthusiasts.

Ready to run RC vehicles demand quality replacement and upgrade parts, and these metal gears represent exactly the kind of investment that keeps your TRX-4M performing at its best. Compatible with the complete TRX-4M range including the Ford Bronco, Land Rover Defender, and Chevrolet K10 High Trail editions, plus the TRX-4MT Monster Truck variants, this upgrade is accessible to any TRX-4M owner seeking improved drivetrain performance.

Key Features

• Metal Construction — Unlike standard plastic gears that can strip or wear rapidly under load, these front and rear metal axle gears provide significantly greater durability and longevity, making them essential for drivers who demand reliability from their RC crawlers and trail trucks.
• Front and Rear Gears Included — This package contains both front and rear metal axle ring and pinion gears, delivering a complete drivetrain upgrade rather than requiring separate purchases, saving you money and ensuring matched gear sets throughout your TRX-4M.
• Perfect Partner for Hardened-Steel Axles — These metal gears are engineered to work seamlessly with Traxxas's 9756 hardened-steel axle set, creating an ultra-durable drivetrain system that can handle the demands of serious RC exploration and challenging terrain without compromise.
• Universal TRX-4M Compatibility — Whether you own the Ford Bronco, Land Rover Defender, Chevrolet K10 High Trail Edition, or any TRX-4MT Monster Truck variant, these gears deliver plug-and-play compatibility with your existing TRX-4M platform.
• Reduced Gear Noise While Maintaining Performance — Owners report that metal gears produce slightly more noise than plastic alternatives, but this is a small trade-off for the dramatically increased durability and reliability that prevents gear shredding and drivetrain failure.
• Professional-Grade Upgrade — These gears represent the kind of upgrade chosen by experienced RC crawlers and competitive drivers who understand that drivetrain reliability is fundamental to consistent performance and longevity in demanding conditions.

Technical Performance

The Traxxas TRX9779 metal axle gears represent a significant step up from plastic components in terms of durability, reliability, and long-term performance characteristics. Metal ring and pinion gears can withstand substantially higher torque loads and impact stresses compared to their plastic equivalents, making them ideal for TRX-4M owners who regularly tackle challenging terrain, rocky crawling environments, or extended driving sessions. The front and rear gears work together as a matched pair, ensuring balanced power distribution and consistent performance across both the front and rear axles of your TRX-4M. When paired with Traxxas's 9756 hardened-steel axle shafts, you create a complete drivetrain system that represents the pinnacle of crawler durability. The metal construction ensures that your TRX-4M maintains consistent performance even after hundreds of hours of use, eliminating the gear wear and progressive performance loss that can plague plastic-equipped vehicles. These gears are manufactured to Traxxas's exacting standards and tolerances, guaranteeing perfect fitment and operation within your existing TRX-4M transmission system. For UK RC enthusiasts operating their crawlers in muddy, rocky, or challenging British terrain, the investment in metal gears pays dividends in reliability and longevity.

What's in the Box

• Front metal axle ring and pinion gear set
• Rear metal axle ring and pinion gear set

Frequently Asked Questions

• Are these metal gears compatible with all TRX-4M models? — Yes, these TRX9779 gears are compatible with the complete TRX-4M range including the Ford Bronco, Land Rover Defender, Chevrolet K10 High Trail Edition, and all TRX-4MT Monster Truck variants in their various colours and editions.
• What is the advantage of metal gears over the plastic ones that come standard? — Metal gears provide substantially greater durability and longevity compared to plastic components. They resist stripping, wear more slowly under load, and maintain consistent performance over hundreds of hours of use. The trade-off is slightly increased noise, but this is a worthwhile compromise for serious RC crawlers who prioritise reliability.
• Should I upgrade both front and rear gears at the same time? — Yes, this package includes both front and rear gears, and upgrading both simultaneously ensures matched components throughout your drivetrain and balanced power distribution across all axles. This approach maximises durability and prevents uneven wear patterns.
• What is the best upgrade strategy for my TRX-4M drivetrain? — Traxxas recommends combining these TRX9779 metal axle gears with the 9756 hardened-steel axle set to create the ultimate durable drivetrain system. This combination delivers professional-grade reliability and longevity that suits serious RC crawlers and competitive drivers.
• How do metal gears affect performance and speed? — Metal gears do not alter your TRX-4M's speed or acceleration characteristics. They are direct replacements designed to maintain identical performance whilst dramatically improving durability and longevity, making them a pure reliability upgrade rather than a performance modification.
• Is this suitable for beginners? — These gears are suitable for any TRX-4M owner, including beginners, though they are primarily recommended for drivers who have experienced gear wear or who plan extended use in challenging conditions. Beginners may find standard plastic gears adequate initially, but upgrading to metal gears is a prudent investment that protects your TRX-4M's drivetrain.
• What tools do I need to install these gears? — Installation requires standard RC hobby tools including hex drivers and potentially a gear puller, depending on your mechanical experience. If you're unfamiliar with drivetrain work, we recommend consulting Traxxas's detailed assembly guides or seeking assistance from experienced RC technicians.

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 Traxxas Gears, axle (metal, front & rear) TRX9779 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.