Overview
The Traxxas Housings, Differential (left & right) / Pinion Gear collar (1pc) TRX3979 is an essential replacement and upgrade component for Traxxas E-Maxx RC models. This genuine Traxxas differential housing assembly is designed for serious RC enthusiasts who demand reliability, precision engineering and authentic OEM parts for their high-performance electric RC vehicles. Whether you're a weekend basher enjoying RC car thrills around the UK or a dedicated hobbyist maintaining your fleet, having quality differential housings ensures your transmission system operates at peak performance.
Differential housings are critical components in any RC car's drivetrain, responsible for distributing power to the wheels whilst allowing them to rotate at different speeds during turns. The TRX3979 provides both left and right differential housings plus a pinion gear collar in a single convenient package, making it the ideal replacement part when wear occurs or when you're rebuilding your E-Maxx for optimal performance. This is genuine Traxxas engineering, manufactured to the exacting standards that have made Traxxas the trusted name in ready to run RC cars and spare parts across the UK and worldwide.
If you're searching for authentic Traxxas differential housing parts, premium quality RC spares, or components to maintain your E-Maxx platform, the TRX3979 delivers exactly what you need. This is not a budget alternative—it's the genuine article, engineered by Traxxas to restore your vehicle to factory specifications and ensure the durability your RC experience demands.
Key Features
- Complete Left & Right Housing Assembly — This package includes both the left and right differential housings in a single purchase, eliminating the need to buy multiple separate components and saving you time and money when performing differential maintenance or repairs on your E-Maxx.
- Pinion Gear Collar Included — The addition of a pinion gear collar in this single-piece package means you have everything necessary for a complete differential rebuild without hunting for compatible separate parts, ensuring proper gear alignment and transmission efficiency.
- Genuine Traxxas OEM Components — These are authentic original equipment manufacturer parts built to the exact specifications Traxxas designed for the E-Maxx platform, guaranteeing compatibility, fit and the performance characteristics you expect from your vehicle.
- Durable Construction for High-Performance Use — Traxxas differential housings are engineered to withstand the demands of aggressive RC driving, whether you're bashing on grass, tarmac or dirt tracks across the UK, providing reliable power distribution through multiple uses.
- Essential Maintenance Component — Regular differential maintenance keeps your E-Maxx running smoothly; having quality replacement housings on hand means you can quickly restore your vehicle to peak condition without waiting for shipping or settling for inferior alternatives.
- Perfect for Serious RC Enthusiasts — Whether you're a competitive racer, a weekend warrior, or someone who simply demands the best performance from their RC car UK collection, these genuine Traxxas parts are the professional choice for maintaining your investment.
Technical Performance
The Traxxas TRX3979 differential housing assembly represents the culmination of years of research and development in high-performance RC drivetrain engineering. These components are manufactured using durable materials selected specifically to handle the torque loads, rotational forces and wear patterns generated during aggressive RC driving. The left and right housings work in concert to create a balanced differential system that allows your E-Maxx to corner smoothly whilst maintaining traction and power delivery to both driven wheels. The inclusion of the pinion gear collar ensures precise alignment of the pinion gear with the ring gear, which is critical for smooth operation, minimal noise and maximum efficiency in power transmission. Whether you're running your RC car on speed runs, technical courses or casual backyard bashing sessions, these housings provide the engineering integrity that Traxxas is renowned for. The materials and construction methods used ensure these components will provide reliable service through countless hours of RC enjoyment, making them an excellent investment in maintaining your E-Maxx platform at factory specifications and performance levels.
What's in the Box
- Differential housing (left)
- Differential housing (right)
- Pinion gear collar (1 piece)
Frequently Asked Questions
- What is a differential housing and why do I need to replace it? — The differential housing is the structural component that contains the differential gears and allows your wheels to rotate at different speeds during cornering. Over time, through aggressive use, wear can occur to these housings, causing play in the drivetrain, noise, or loss of efficiency. Replacing worn housings with genuine Traxxas TRX3979 components restores your E-Maxx to factory specifications and ensures smooth, reliable power delivery.
- Is this suitable for both beginners and experienced RC drivers? — This is a replacement and maintenance part rather than a complete vehicle, so it's most relevant for those who already own a Traxxas E-Maxx and have some experience with RC car maintenance. However, beginners who want to learn about RC maintenance will find this a straightforward component to install, especially with Traxxas documentation.
- What makes these housings better than aftermarket alternatives? — These are genuine Traxxas OEM parts engineered specifically for the E-Maxx platform. They guarantee perfect fitment, correct material specifications, and the performance characteristics Traxxas designed into your vehicle. Aftermarket alternatives may offer cost savings but often sacrifice durability and precision engineering.
- What vehicle model does this part fit? — The TRX3979 is specifically designed for the Traxxas E-Maxx RC platform. Always verify your model before ordering to ensure compatibility with your vehicle.
- Do I need any special tools to install this? — Basic RC hobby tools including hex wrenches, screwdrivers and potentially some mechanical aptitude are generally required for differential work. Traxxas documentation provides detailed instructions, and our team at RC Model Shop can offer guidance if you're unsure about the installation process.
- How often should I replace my differential housings? — With proper maintenance and reasonable use, Traxxas differential housings should last many hours of RC driving. Regular inspection for cracks, play or noise will help you identify when replacement is needed. Aggressive driving or racing may require more frequent maintenance.
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 Housings, Differential (left & right) / Pinion Gear collar (1pc) TRX3979 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.
- Brand: Traxxas
- Model Number: TRX3979
- EAN: 0020334397904
- Product Type: Differential Housing Assembly with Pinion Gear Collar
- Vehicle Platform: Traxxas E-Maxx
- Contents: Left differential housing, right differential housing, pinion gear collar (1 piece)
- Application: Replacement and upgrade component for E-Maxx drivetrain
- OEM Status: Genuine Traxxas original equipment manufacturer parts
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.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
