RPM73615

Overview

The RPM Traxxas 2WD Hybrid Gearbox Housing and Rear Mounts in Blue (RPM73615) is a premium transmission upgrade designed specifically for Traxxas 2WD short course trucks and buggies. Whether you own a Traxxas Slash, Stampede, e-Rustler, or Bandit, this innovative gearbox solution transforms the performance and reliability of your RC car. Engineered to solve the fundamental problems associated with stock transmission housings, this aftermarket upgrade combines aircraft-grade aluminium with durable moulded nylon to deliver the perfect balance of strength, durability and heat dissipation that serious RC enthusiasts demand.

If you're frustrated with stock plastic transmission cases that overheat, allow excessive gear wear, and limit your RC car's potential, the RPM Hybrid Gearbox Housing is the answer. This is one of the most cost-effective yet transformative upgrades you can make to any Traxxas 2WD model. Whether you're racing competitively or bashing for fun, improved gear mesh stability, motor cooling and component protection will immediately enhance your driving experience. Every component is proudly designed and manufactured in the USA, reflecting RPM's commitment to quality and performance that UK RC enthusiasts have come to trust.

Available now through RC Model Shop, this comprehensive gearbox kit includes everything you need to upgrade your transmission system, including dual rear mounts offering both 0° and 3° options for fine-tuned suspension geometry adjustments. The blue colour option is visually striking and perfectly complements most modern Traxxas 2WD builds whilst maintaining the professional aesthetic expected of serious RC car UK competitors and weekend bashers alike.

Key Features

• Premium Aluminium Motor Plate — Manufactured in the USA from 3mm thick 6061 T6 aerospace-grade aluminium, this motor plate delivers serious strength and durability far exceeding stock plastic alternatives. This rigid construction locks in precise gear mesh settings, eliminating fears of exploding spur and pinion gears that result from overheated stock transmission cases, giving you worry-free performance session after session.
• Exceptional Motor Heat Dissipation — The solid aluminium construction offers significant motor heat dissipation compared to stock plastic motor plates that actually insulate motor heat. This means cooler motor temperatures, longer motor lifespan, and more consistent performance throughout extended driving sessions, whether racing on the track or bashing in the garden.
• Independent Motor Plate Design — The motor plate is not integrated with the rear bumper mounts, meaning rear impacts will not bend or damage your expensive motor plate. When used with a compatible rear bumper or bumper mounting system such as RPM #80902 or #80905, your motor plate remains completely protected and isolated from collision forces.
• Bulletproof Nylon Gearbox Housing — Moulded from RPM's proprietary blend of ultra-durable, long-lasting bulletproof nylons available in three vibrant colour choices including this eye-catching blue. The moulded construction guarantees superior durability, strength and style compared to machined or printed alternatives, with tighter tolerances and less slop for better camber and toe angle retention.
• Integrated Motor Protection Cover — Unlike many aftermarket transmission housings that leave your motor completely exposed to rear impacts and debris, the RPM housing retains a stock-style protective cover for your motor. This adds genuine protection where it matters most, safeguarding your investment from collision damage and dirt ingress.
• Cleaner Internal Gearing — RPM engineers modified the housing design to eliminate the huge bottom hole found in stock transmission cases. This improvement keeps your internal gears significantly cleaner for longer, reducing maintenance intervals and extending component lifespan by minimising dirt and debris accumulation inside the gearbox.
• Significantly Quieter Operation — The completely enclosed gearbox housing dramatically reduces transmission noise compared to stock open-design cases. You'll no longer have the loudest transmission on the track or at the bash spot, with noticeably quieter, more refined operation that's easier on the ears during extended driving sessions.
• Smoother Exterior Design — The redesigned exterior features are substantially smoother than traditional transmission cases, making it significantly less likely that dirt will adhere to or build up on the case during dusty or muddy driving sessions. This design refinement reduces cleaning time and maintains a more professional appearance throughout your RC car's life.
• Stock Bumper Mounting Hole Compatibility — The housing retains all stock bumper mounting holes, delivering positive, solid support for any bumper system or wheelie bars you choose to install. This ensures compatibility with existing Traxxas accessories and aftermarket options without modification or drilling.
• Independent Transmission and Suspension Service — The separate housing and rear mounts design means you can perform transmission maintenance without affecting your suspension settings. This modular approach saves time during repairs and allows suspension geometry to remain stable even whilst servicing the gearbox.
• Dual Rear Mounts Included — Each kit comes complete with two sets of professionally engineered rear mounts offering both 0° and 3° options. This gives you the flexibility to dial in your preferred suspension geometry, with each mount individually accessible and removable. Simply unbolt 2 screws and a hinge pin to remove an A-arm mount, or 6 screws to remove the entire transmission.
• Tool-Free Mount Adjustment — The separate rear mounts are engineered for quick and easy adjustment without removing the transmission or affecting other suspension components. The individual mounting points mean tighter tolerances and less slop than machined components, delivering superior camber and toe angle retention for consistent handling throughout your driving session.
• Complete Hardware Package — Each RPM Gearbox Housing kit arrives with all necessary mounting hardware and comprehensive instructions, making installation straightforward for builders of all experience levels. No hunting for missing screws or guessing at assembly procedures.

Technical Performance

The RPM Traxxas 2WD Hybrid Gearbox Housing represents a significant engineering advancement over stock transmission components. The 3mm thick 6061 T6 aluminium motor plate provides exceptional rigidity whilst maintaining lightweight construction, a critical combination for high-performance RC car racing. The moulded nylon gearbox housing utilises RPM's proven bulletproof nylon blend, a material engineered specifically for the demands of competitive RC driving where impact resistance, dimensional stability and longevity are non-negotiable. The hybrid design combining aluminium and moulded nylon delivers optimal performance across multiple metrics: aluminium handles motor heat dissipation and provides structural rigidity for precise gear mesh alignment, whilst the moulded nylon housing offers impact resistance, noise dampening and cost-effective manufacturing precision. Internal engineering improvements including the elimination of the stock housing's large bottom hole significantly reduces contamination of internal gears, directly extending component lifespan. The dual rear mount system with 0° and 3° options allows builders to optimise suspension geometry according to their specific track conditions, driving style and Traxxas model. Whether running a 2WD Slash, Stampede, e-Rustler or Bandit, this transmission system will unlock performance improvements including cooler operating temperatures, more reliable gear engagement, reduced maintenance requirements and noticeably quieter operation. The USA manufacturing standard ensures consistent quality control and performance reliability that UK RC competitors have come to expect from premium aftermarket components.

What's in the Box

• RPM Hybrid Gearbox Housing (moulded nylon, blue colour)
• Aluminium Motor Plate (3mm thick 6061 T6)
• 0° Rear Mounts (set of two)
• 3° Rear Mounts (set of two)
• Complete mounting hardware (screws, hinge pins, fasteners)
• Comprehensive assembly instructions and documentation

Frequently Asked Questions

• Will the RPM Hybrid Gearbox Housing fit my Traxxas 2WD model? — Yes, this housing is specifically engineered for Traxxas 2WD models including the Slash, Stampede, e-Rustler and Bandit. Before purchasing, verify your model matches one of these supported vehicles. The gearbox retains all stock mounting points for seamless installation.
• What are the advantages of the aluminium motor plate over stock plastic? — The 3mm thick 6061 T6 aluminium motor plate provides dramatically superior heat dissipation compared to stock plastic alternatives that actually insulate motor heat. This cooler operation extends motor lifespan, improves consistency during long driving sessions, and allows tighter gear mesh locking without fear of overheating-related gear failure. The rigid aluminium construction also prevents flex that can occur with plastic plates, maintaining precise pinion to spur gear alignment.
• How does the enclosed housing reduce noise? — Stock Traxxas transmission cases feature open designs that allow sound to radiate directly outward during operation. The RPM completely enclosed gearbox housing traps and dampens transmission noise internally, resulting in noticeably quieter operation. This is particularly advantageous at racing events where noise restrictions may apply, and for extended bashing sessions where lower noise levels are simply more pleasant.
• Why are the rear mounts sold in two different angles? — The included 0° and 3° rear mounts allow you to optimise suspension geometry according to your specific Traxxas model, track conditions and driving preferences. The 0° mounts provide neutral rear camber for general bashing and street use, whilst the 3° mounts add negative rear camber for improved cornering performance during racing. You can experiment with both to find your preferred handling characteristics.
• Can I use the RPM housing with aftermarket bumpers? — Yes, the housing retains all stock bumper mounting holes, ensuring positive compatibility with both Traxxas factory bumpers and popular aftermarket options. For maximum motor plate protection during impacts, RPM recommends pairing this housing with a compatible bumper system such as RPM #80902 or #80905.
• Is installation suitable for beginners? — Installation is straightforward for builders with basic mechanical experience. The kit includes comprehensive instructions and all necessary hardware. If you're comfortable removing your stock transmission, the RPM housing installation should take 30-45 minutes. However, if you've never serviced a transmission before, we recommend consulting the detailed instructions or seeking guidance from experienced RC enthusiasts.
• How much easier is transmission maintenance with separate housing and mounts? — The modular design is significantly more convenient than integrated stock components. You can service the transmission gearbox without touching suspension mounts, and adjust or replace rear mounts without removing the entire transmission. This separation saves considerable time during routine maintenance and repairs, particularly beneficial for racers performing frequent adjustments between competition heats.
• What's the benefit of eliminating the stock housing's bottom hole? — Stock Traxxas housings feature a large bottom opening designed for water drainage. However, this same opening allows dirt, sand and debris to freely enter the transmission during bashing or racing. RPM's design modification eliminates this cavity, dramatically reducing gear contamination and extending the intervals between deep cleaning and component replacement. Your gears stay cleaner longer, improving reliability and reducing maintenance costs.
• Why choose moulded nylon over machined aluminium for the gearbox housing? — Moulded nylon offers superior impact resistance compared to rigid machined aluminium, which can crack or bend from significant impacts. The moulded construction also provides tighter tolerances and less slop than traditionally machined parts, delivering better camber and toe angle retention. Additionally, the moulded nylon design is considerably more cost-effective, allowing RPM to include multiple rear mount options and complete hardware whilst maintaining exceptional value for money.
• Is this upgrade suitable for both racing and bashing? — Absolutely. Whether you're competing in organised short course racing or bashing casually in your garden, the RPM housing delivers genuine benefits. Racers benefit from improved gear mesh stability and cooler temperatures during intense competition, whilst bashers appreciate the durability, quiet operation and reduced maintenance requirements when pushing hard off-road.

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 BLUE RPM73615 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.