Overview
The Fastrax TRX-4 Brass BK Portal Drive Housing Outer F/R (2) is a premium performance upgrade part designed for serious RC crawler enthusiasts in the UK who demand excellence from their Traxxas TRX-4 models. This high-quality brass portal drive housing set represents a significant investment in your RC car's durability and performance, crafted specifically to enhance the mechanical efficiency and longevity of your TRX-4 crawler. Whether you're tackling challenging terrain at your local RC track or conquering obstacles in your garden, this upgrade delivers the engineering precision that separates competitive crawlers from casual bashers.
Portal drive housings are critical components in modern RC crawlers, as they house the planetary gearing systems that distribute power to the wheels while maintaining optimal ground clearance. The Fastrax brass construction provides superior durability compared to standard plastic housings, offering enhanced resistance to wear and impact damage during intense crawling sessions. This makes the part an essential upgrade for anyone running a Traxxas TRX-4 who wants to maximise their investment and reduce maintenance downtime between sessions.
Built to exacting standards by Fastrax, a recognised manufacturer of premium RC upgrade parts, this portal drive housing set comes as a front and rear pair, allowing you to upgrade both axles simultaneously for perfectly matched performance. The black finish adds a professional appearance whilst protecting the brass components underneath. If you're serious about getting the most from your RC crawler, this upgrade is a natural choice for dedicated hobbyists across the UK.
Key Features
- Brass Construction — The use of brass material throughout this portal drive housing provides exceptional durability and longevity compared to plastic alternatives, ensuring your crawler can withstand the rigours of challenging terrain and repeated impacts without premature wear or failure.
- Front and Rear Pair — This package includes both front and rear portal drive housings, meaning you can upgrade your entire TRX-4 drivetrain in one purchase rather than buying multiple individual components separately.
- Black Powder-Coated Finish — The black coating not only provides a factory-quality aesthetic that matches modern TRX-4 build styles, but also protects the underlying brass from corrosion and oxidation during outdoor use.
- OEM Compatible Design — These housings are engineered to fit seamlessly onto standard Traxxas TRX-4 axles and drivetrains without modification, making installation straightforward for RC enthusiasts with basic mechanical skills.
- Enhanced Performance Longevity — By upgrading to brass housings, you extend the service life of your drivetrain components, reducing the frequency of replacements and ultimately saving money over the lifetime of your crawler.
- Precise Engineering — Manufactured to exact tolerances by Fastrax, these housings ensure smooth planetary gear operation and reliable power distribution to all four wheels during crawling manoeuvres.
Technical Performance
The Fastrax TRX-4 Brass BK Portal Drive Housing Outer set represents the pinnacle of upgrade engineering for the Traxxas TRX-4 platform. Portal drive systems have become the standard in modern RC crawlers because they provide improved ground clearance by raising the axles relative to the wheels, a critical advantage when navigating rocky terrain, roots, and obstacles. The outer housings contain the portal planetary gears that multiply torque whilst reducing wheel speed, providing the low-end grunt essential for slow-speed technical crawling. By constructing these housings from brass rather than plastic, Fastrax has created a component that can withstand repeated stress cycles and impact loads that would cause plastic housings to crack or strip. The black finish is applied via powder coating, a process that creates a harder, more durable surface than simple paint. The engineering tolerances are precise enough to ensure smooth engagement between the planetary gears and the sun gear, eliminating binding, noise, and inefficiency in power delivery. When paired with quality shock absorbers, suspension geometry upgrades, and proper tyre selection, these portal housings form part of a complete high-performance crawling setup that can tackle UK terrain from the Peak District moorlands to Welsh hillsides. For serious RC crawler enthusiasts looking to build a competition-grade or ultra-reliable expedition crawler, this upgrade is fundamental.
What's in the Box
- Fastrax TRX-4 Brass BK Portal Drive Housing Outer Front (1)
- Fastrax TRX-4 Brass BK Portal Drive Housing Outer Rear (1)
Frequently Asked Questions
- Will these brass portal housings fit my Traxxas TRX-4? — Yes, these housings are specifically engineered to fit all Traxxas TRX-4 models including the Chevrolet K10 Cheyenne High Trail Edition in all colours, the Ford F-150 Ranger XLT, the Chevrolet K5 Blazer, the Nissan Pathfinder, the Ford Bronco, the Defender, the Sport models, and the unassembled TRX-4 chassis kit. They are compatible with both RTR (Ready to Run) and kit versions of these models.
- Why should I choose brass over the standard plastic housings? — Brass housings offer dramatically improved durability and longevity compared to plastic. Whilst plastic housings can crack under impact or wear out from repeated stress cycles, brass maintains its structural integrity through years of intense crawling sessions. If you frequently tackle rocky terrain or bash your TRX-4 hard, brass housings will reduce maintenance requirements and extend the service life of your entire drivetrain.
- Do I need special tools to install these housings? — Installation requires basic RC mechanical knowledge and standard hex wrenches, which are typically included with most tool kits. If you're comfortable performing routine maintenance on your RC car, you'll be able to install these housings without difficulty. However, if you're new to RC maintenance, we recommend watching installation videos or consulting your vehicle manual for guidance.
- What is the difference between portal drive housings and standard axle housings? — Portal drive systems position the outer housings above the axle line, which raises the gear reduction system and thus increases ground clearance for the wheel hubs. This design allows crawlers to navigate larger rocks and obstacles without the axles getting hung up. Standard housings position the gearing lower, reducing clearance. Portal systems are superior for modern technical crawling but require compatible components like these housings.
- Are these genuine Fastrax parts? — Yes, when you order from RC Model Shop, you receive authentic Fastrax products with genuine quality assurance. Fastrax is a recognised manufacturer of premium RC upgrade components trusted by crawling enthusiasts worldwide.
- Will upgrading to brass housings improve my crawling performance? — Brass housings directly improve reliability and durability rather than speed or basic performance. However, by reducing drivetrain failures and maintenance downtime, they effectively improve your overall crawling performance by keeping your truck operational and ready for more trail time.
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 Fastrax TRX-4 Brass BK Portal Drive Housing Outer F/R (2) FTTX304BRB 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.
- Manufacturer: Fastrax
- Part Number: FTTX304BRB
- EAN: 5056135727973
- Tune-Up Type: Chassis
- Product Type: Portal Drive Housing Outer
- Position: Front and Rear
- Quantity: 2 pieces (1 front, 1 rear)
- Material: Brass
- Finish: Black powder coat
- Compatible Vehicle: Traxxas TRX-4 all versions including TRX92056-4-BLK, TRX92056-4-SLVR, TRX92056-4-BLUE, TRX92046-4-BRWN, TRX92086-4-BLUE, TRX82276-4-BLK, TRX82216-4-R6, TRX110056-4-RED, TRX92056-4-RED, TRX92056-4-COPR, TRX92046-4-BLUE, TRX92086-4-RED, TRX92046-4-BLK, TRX82276-4-RED, TRX110056-4-SLVR, TRX92076-4-RED, TRX92076-4-WHT, TRX92076-4-ORNG, TRX92076-4-BLK, TRX82256-4-GRN, TRX82256-4-SAND, TRX82256-4-RED, TRX82256-4-SLVR, TRX82044-4-BLUE, TRX82224-4-BLUE, TRX82234-4-ORNG, TRX82224-4-GRAY, TRX88296-4-SLVR, TRX88296-4-BLK
- Weight: Not specified
- Dimensions: Not specified
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
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