Overview
The Traxxas Carrier, Differential / X-ring gaskets (2 pcs) / ring gear gasket / 6x10x0.5 TW TRX7781 is an essential replacement and upgrade component for serious RC enthusiasts operating high-performance Traxxas models in the UK. This differential carrier assembly is specifically engineered to maintain the precision and reliability of your RC car's drivetrain, ensuring smooth power delivery and consistent performance across demanding terrain. Whether you're a weekend basher pushing your RC monster truck to its limits or a competitive racer demanding flawless mechanics, this genuine Traxxas spare part delivers the quality and durability you need to keep your RC vehicle performing at its peak.
Differential carriers are critical drivetrain components that distribute engine power to the wheels whilst allowing them to rotate at different speeds during cornering. The TRX7781 is compatible with multiple premium Traxxas models including the legendary X-Maxx Belted 4WD Brushless RTR 8S Monster Truck, the X-Maxx Ultimate, the X-Monster Chassis, and the XRT VXL-8S range, making it an essential part for RC model owners across the UK who demand authentic, factory-engineered components for their vehicles.
This complete carrier assembly arrives ready to install and includes everything needed for a professional rebuild or maintenance procedure, eliminating the need to source gaskets and washers separately. For anyone serious about maintaining their RC car's performance and reliability, the Traxxas TRX7781 represents genuine, authorised component engineering backed by Traxxas's reputation for precision manufacturing and long-term durability.
Key Features
- Complete Gasket Assembly — This carrier includes not one but two X-ring gaskets, providing comprehensive sealing across critical contact points within the differential housing. X-ring gaskets offer superior sealing characteristics compared to standard O-rings, preventing unwanted fluid leakage and maintaining proper differential lubrication under extreme driving conditions that your RC car may encounter.
- Ring Gear Gasket Included — The ring gear gasket seals the interface between the ring gear and the carrier body, preventing differential oil from seeping out during aggressive acceleration, hard braking, and sustained high-speed running. This prevents costly oil loss and maintains the internal lubrication your differential needs for smooth, reliable operation.
- PTFE Washer Precision Component — The 6x10x0.5 mm PTFE (polytetrafluoroethylene) washer provides low-friction bearing support and precise spacing within the differential assembly. PTFE is an advanced polymer material offering excellent chemical resistance and minimal friction characteristics, ensuring your differential rotates smoothly and responsively without binding or excess drag.
- Genuine Traxxas Engineering — As an official Traxxas OEM component, this carrier assembly is engineered to exacting specifications and manufactured to the same quality standards as components in new factory-built vehicles. Using authentic Traxxas parts ensures perfect fitment and compatibility with your existing drivetrain.
- Multi-Model Compatibility — This TRX7781 carrier is compatible with numerous Traxxas models including the X-Maxx Belted variants in orange, blue, green, and red colours, the X-Maxx Ultimate in blue and green X versions, the X-Monster Chassis platform, and the entire XRT VXL-8S range. Whether you run a short course truck, monster truck, or extreme terrain vehicle, this component may be exactly what your RC model needs.
Technical Performance
The Traxxas TRX7781 differential carrier assembly represents precision mechanical engineering designed for the demanding environment of high-performance RC vehicles. Constructed with carefully selected materials and tolerances, this carrier housing forms the structural foundation of your vehicle's differential system. The inclusion of two X-ring gaskets addresses the most critical sealing points within the differential, as X-ring designs feature an extra ridge compared to traditional O-rings, creating a more effective seal under pressure and temperature cycling. The 6x10x0.5 mm PTFE washer provides essential friction management at bearing interfaces, allowing smooth rotation whilst maintaining precise spacing tolerances that keep internal gears perfectly aligned. The ring gear gasket ensures the critical interface between the ring gear (which receives power from the motor via the pinion gear) and the carrier body remains completely sealed against oil leakage. These engineering details matter significantly in RC vehicles that may experience rapid acceleration, aggressive cornering forces, and continuous operation across varied terrain. The PTFE material selected for the washer component offers exceptional resistance to the oils and lubricants used in RC differentials, ensuring long-term stability and performance without degradation over numerous drive cycles.
What's in the Box
- Differential carrier housing
- X-ring gaskets (2 pieces)
- Ring gear gasket
- 6x10x0.5 mm PTFE washer
Frequently Asked Questions
- Is the Traxxas TRX7781 differential carrier suitable for beginners working on their own RC cars? — Differential work requires some mechanical skill and understanding of drivetrain systems, so this is better suited to intermediate RC enthusiasts who have basic experience with RC car maintenance. However, if you're comfortable following detailed instructions and have worked on similar assemblies before, installation is achievable with patience and proper tools. Many UK RC shops offer installation services if you prefer professional fitting.
- What does a differential carrier do in my RC car? — The differential carrier is the housing that contains your vehicle's differential gears and bearings. These gears allow your vehicle's wheels to rotate at different speeds during cornering whilst still receiving power, which is essential for smooth turning and realistic handling. Maintaining proper sealing with gaskets and washers ensures your differential oil stays inside where it lubricates the precision gears, preventing wear and maintaining smooth performance.
- How often should I replace the gaskets and washers in my differential? — Gaskets and washers should be replaced whenever you service your differential or notice any oil seepage from the carrier. Some RC enthusiasts replace them during regular maintenance intervals (typically every 10-15 hours of running time for competitive drivers), whilst casual bashers may only need replacement when they notice problems. If you've disassembled your differential for any reason, it's good practice to install fresh gaskets and washers to ensure a proper seal.
- Will this carrier fit my specific Traxxas model? — The TRX7781 is confirmed compatible with the Traxxas X-Maxx Belted 4WD Brushless RTR 8S Monster Truck (available in orange, blue, green, and red), the X-Maxx Ultimate (blue X and green X versions), the X-Monster Chassis, and the XRT VXL-8S range (available in green, black, blue, and orange). Always verify your specific model number before ordering to ensure correct compatibility.
- Is this an original Traxxas part or an aftermarket copy? — The TRX7781 is a genuine original Traxxas OEM (original equipment manufacturer) component, engineered and manufactured to Traxxas's exacting specifications. Purchasing genuine parts ensures you receive the exact material specifications and quality standards that Traxxas designed into your vehicle.
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 Carrier, Differential / x-ring gaskets (2 pcs) / ring gear gasket / 6x10x0.5 TW TRX7781 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.
- Product Type: Differential Carrier Assembly with Gaskets and Washer
- Manufacturer: Traxxas
- Part Number: TRX7781
- EAN: 0020334778109
- Spare Part Category: Drivetrain Spares
- Contents: Differential carrier, X-ring gaskets (2 pieces), ring gear gasket, 6x10x0.5 mm PTFE washer
- Gasket Type: X-ring gaskets (2), ring gear gasket
- Washer Size: 6x10x0.5 mm
- Washer Material: PTFE (polytetrafluoroethylene)
- Compatible with Traxxas X-Maxx Belted 4WD Brushless RTR 8S Monster Truck (orange, blue, green, red variants)
- Compatible with Traxxas X-Maxx Ultimate (blue X, green X variants)
- Compatible with Traxxas X-Monster Chassis
- Compatible with Traxxas XRT VXL-8S (green, black, blue, orange variants)
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.
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- 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.
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- 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.
