RPM Traxxas 2WD Hybrid Gearbox Housing and Rear Mounts Black RPM73612

Overview

The RPM Traxxas 2WD Hybrid Gearbox Housing and Rear Mounts in black (RPM73612) is a premium upgrade component designed to address the inherent limitations of stock transmission housings on Traxxas 2WD short course trucks. Whether you're running a Traxxas Slash, Stampede, e-Rustler or Bandit, this hybrid transmission solution combines aerospace-grade aluminium with advanced moulded nylon technology to deliver superior strength, durability and thermal management. For RC enthusiasts in the UK looking to upgrade their Traxxas 2WD vehicle, this is one of the most impactful yet affordable performance investments you can make.

RPM has engineered this gearbox housing to solve multiple issues that plague stock plastic transmission cases and inferior aftermarket alternatives. The hybrid construction—featuring a precision-machined aluminium motor plate paired with moulded nylon housings—creates the perfect balance between rigidity and impact resistance. This isn't just about durability; it's about unlocking consistent performance, reducing maintenance headaches, and enjoying a significantly quieter, cleaner transmission that keeps your internal gears protected and running cool.

Designed and manufactured in the USA to exacting tolerances, the RPM Hybrid Gearbox Housing represents professional-grade engineering at an accessible price point. Whether you're a weekend basher, a competitive racer, or a dedicated RC hobbyist, this upgrade will immediately improve your driving experience and extend the lifespan of your transmission components.

Key Features

• Aluminium Motor Plate (3mm 6061 T6) — Manufactured in the USA from premium-grade 6061 T6 aluminium that is 3mm thick, this motor plate delivers serious strength and durability that stock plastic simply cannot match. The aluminium construction locks in precise gear mesh, eliminating the risk of exploding spur and pinion gears caused by overheated stock transmission cases and inconsistent gear engagement.
• Superior Motor Heat Dissipation — Unlike stock plastic motor plates that actually insulate the motor and trap heat, the aluminium plate offers significant thermal management, keeping your brushless or brushed motor running at cooler temperatures and extending motor lifespan. This is particularly valuable during extended racing sessions or high-speed bashing where heat buildup can degrade performance and damage windings.
• Independent Motor Plate Design — The motor plate is not integrated with the rear bumper mounts, meaning impacts to your rear bumper won't bend or stress your motor plate. When used with a compatible rear bumper system such as RPM #80902 or #80905, you gain maximum protection with zero risk of transmission damage from rear collisions.
• Bulletproof Moulded Nylon Housings — The gearbox housing is moulded from RPM's proprietary blend of ultra-durable nylons that have proven their reliability across thousands of RC cars. These housings come in your choice of three popular colour options—including the black model here—and deliver guaranteed durability, strength and style without compromise.
• Full Motor Coverage and Protection — Unlike most aftermarket housings that leave the motor completely exposed to rear impacts and debris, the RPM housing retains a complete stock-style motor cover that shields your motor from collisions, dirt and damage. This is a critical protection feature that other manufacturers overlook.
• Cleaner Internal Gears — RPM engineers modified the housing design to eliminate the huge bottom hole found in stock transmission cases. This modification keeps your internal gears significantly cleaner for much longer, reducing maintenance frequency and protecting critical drivetrain components from contamination.
• Dramatically Reduced Noise Levels — With a completely enclosed gearbox housing, you'll no longer have the loudest transmission on the track or at the bash spot. The sealed design substantially reduces mechanical noise while maintaining full cooling efficiency, creating a more refined driving experience.
• Smoother Exterior Design — The redesigned exterior features smooth, flowing surfaces that make it less likely for dirt, mud and debris to adhere or build up on the transmission case. This clever engineering means you spend less time cleaning and more time driving.
• Independent Maintenance Design — The separate housing and rear mounts design means that transmission maintenance won't affect or alter your suspension settings. You can remove either the transmission or the A-arm mounts independently without affecting the other system, streamlining maintenance and tuning.
• Dual Rear Mount Options (0° and 3°) — Each RPM Hybrid Gearbox Housing kit includes two complete sets of rear mounts—one 0° geometry set and one 3° geometry set. This gives you flexibility to fine-tune your vehicle's suspension geometry for different track conditions, racing styles, or handling preferences without purchasing additional components.
• Individual Mount Access — The rear mounts are completely separate from the gearbox housing and individually accessible. Each mount is removable without removing the transmission or vice versa. Simply unbolt 2 screws and a hinge pin to remove an A-arm mount, or 6 screws to remove the entire transmission, making maintenance quick and straightforward.
• Tight Tolerances with Moulded Precision — Because these components are moulded rather than machined, they achieve tighter tolerances and virtually zero slop compared to traditional machined aftermarket components. This precision engineering translates directly to better camber and toe angle retention, improving handling consistency and driver confidence.
• Complete Hardware and Instructions Included — Every RPM Hybrid Gearbox Housing kit ships with all necessary mounting hardware and comprehensive assembly instructions, so you can have your upgrade installed and ready to run without hunting for fasteners or guessing at fitment.
• USA Design and Manufacturing — Every component is proudly designed and manufactured in the United States to RPM's exacting quality standards, ensuring consistent quality, precise tolerances and genuine engineering excellence that you simply cannot find with cheaper imported alternatives.

Technical Performance

The RPM Traxxas 2WD Hybrid Gearbox Housing and Rear Mounts represent a quantum leap in transmission engineering compared to stock plastic housings or inferior aftermarket alternatives. The core innovation is the hybrid construction: a precision-machined 3mm 6061 T6 aluminium motor plate paired with high-performance moulded nylon housings. This combination is engineered to solve the three critical failures of stock transmission cases: inconsistent gear mesh, inadequate heat dissipation, and poor impact resistance. The aluminium motor plate weighs just enough to provide rigidity while the nylon housings absorb shock loads, protecting the motor and gears from damage. Thermal management is dramatically improved because aluminium conducts heat away from the motor, keeping temperatures significantly lower than plastic cases that insulate and trap heat. The moulded construction achieves tighter tolerances than machined components, meaning gear mesh stays consistent even after repeated impacts, eliminating the gear explosion risk associated with overheated stock cases. The enclosed gearbox design keeps internal gears cleaner and reduces mechanical noise by approximately 5-8dB compared to open-style housings. This is professional-grade transmission engineering that will reliably handle the demands of weekend bashing, high-speed running, or competitive racing with equal aplomb. The separate rear mount design, available in both 0° and 3° geometry options, allows fine-tuning of suspension geometry without affecting transmission integrity. Whether you're running brushless or brushed motors, 2S LiPo batteries for casual bashing or pushing 3S power for serious racing, this transmission housing will deliver consistent performance, superior durability and reliability that justifies its position as one of the most cost-effective yet valuable upgrades available for Traxxas 2WD vehicles in the UK RC market.

What's in the Box

• RPM Hybrid Gearbox Housing (moulded nylon, black colour)
• 3mm 6061 T6 Aluminium Motor Plate
• 0° Rear Mount Set (moulded nylon, two mounting points)
• 3° Rear Mount Set (moulded nylon, two mounting points)
• Complete Mounting Hardware (all fasteners and hinge pins)
• Assembly Instructions

Frequently Asked Questions

• What Traxxas 2WD models does this gearbox housing fit? — The RPM Hybrid Gearbox Housing and Rear Mounts are compatible with Traxxas Slash 2WD (all VXL-3S variants including the Extreme HD version), Traxxas Stampede 2WD, Traxxas e-Rustler, and Traxxas Bandit. If you own any of these short course trucks, this is a direct bolt-on upgrade that requires no modifications.
• How much does installation take, and do I need special tools? — Installation typically takes 30-45 minutes and requires only basic RC tools: a Phillips screwdriver, 1.5mm and 2.0mm hex drivers, and potentially a small spanner for the hinge pins. The comprehensive instructions walk you through the process step-by-step, making this a beginner-friendly upgrade despite its professional-grade performance improvements.
• Will this gearbox housing work with my existing bumper and wheelie bars? — Yes. The RPM housing retains all stock bumper mounting holes, so any Traxxas-compatible bumper, wheelie bar or suspension support system will fit directly without modification. For maximum protection during rear impacts, RPM recommends pairing this housing with the RPM #80902 or #80905 rear bumper systems for a completely integrated protection solution.
• Why should I choose this over stock plastic transmission housing? — Stock plastic housings suffer from three critical limitations: they insulate motor heat (causing overheating and performance loss), they develop inconsistent gear mesh as plastic flexes under load (risking catastrophic gear failure), and they offer minimal protection to the motor from rear impacts. The RPM hybrid design solves all three problems while costing just £25-26, making it the single best value upgrade for any Traxxas 2WD owner.
• Is this suitable for beginners? — Absolutely. While this is professional-grade engineering, it's user-friendly to install and requires no tuning or technical knowledge beyond basic RC maintenance. Beginners benefit immediately from improved reliability, reduced noise, and cooler motor temperatures. Even more importantly, the separate rear mount design makes adjustments and maintenance significantly easier than stock housings, reducing frustration and helping new hobbyists learn transmission basics.
• What battery types are compatible with this gearbox housing? — This is a transmission housing component, not a battery-dependent device, so it's compatible with any battery type your Traxxas vehicle supports. Whether you're running 2S LiPo for casual bashing, 3S LiPo for competitive racing, or NiMh batteries, the housing will work identically. The aluminium motor plate's superior heat dissipation actually helps extend battery runtime by keeping the motor cooler.
• How does the 0° versus 3° rear mount geometry affect handling? — The 0° mount provides a more neutral, predictable handling character ideal for high-speed racing and technical track work where consistency is paramount. The 3° mount increases rear camber angle, which can improve cornering grip and front-end bite in loose or soft-surface conditions, making it popular for sandy tracks or outdoor bashing. You get both options in every kit, so you can experiment and choose based on your driving style and track conditions.
• Will upgrading to this transmission housing make my truck significantly faster? — Speed improvement is secondary to the primary benefits (durability, heat management and noise reduction), but you may notice marginal speed gains because the cooler motor temperatures preserve maximum motor efficiency. More importantly, you'll experience dramatically improved reliability at high speeds, with zero risk of catastrophic transmission failure from overheating or gear mesh inconsistency.
• How much does the aluminium motor plate add to overall weight? — The 3mm 6061 T6 aluminium plate adds only minimal weight compared to stock plastic, typically under 15 grams. This negligible weight penalty is more than justified by the massive improvements in heat dissipation, strength and gear mesh consistency. The moulded nylon housings are actually comparable in weight to stock plastic, so overall vehicle weight remains virtually unchanged.
• Can I use this housing with upgraded brushless motors or high-turn brushed motors? — Yes. The aluminium motor plate and enclosed housing design are actually particularly beneficial with brushless motors, which generate more heat than brushed alternatives. The superior thermal management of the aluminium plate ensures brushless motors maintain peak performance throughout extended driving sessions, making this housing an ideal complement to any brushless conversion or 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 RPM Traxxas 2WD Hybrid Gearbox Housing and Rear Mounts - Black RPM73612 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.