Overview
The Traxxas Centre Differential Kit (TRX6814) is an essential upgrade for UK RC enthusiasts looking to enhance the handling and performance of their 4WD short course trucks and rally cars. Whether you own a Slash 4X4, Stampede 4X4, Rustler 4X4, or Ford Fiesta ST Rally, this optional centre differential transfers power to the front and rear differentials independently, delivering smooth power distribution in challenging terrain and maximising corner speed. This is a genuine Traxxas accessory part designed for serious bashers and competitive drivers who demand superior off-road performance and precise control.
The centre differential represents a significant upgrade over standard differentials, offering independent power delivery that makes a noticeable difference when navigating rough conditions, high-speed corners, and technical terrain. Available as a complete, fully assembled kit, the TRX6814 is ready to install straight from the box with no additional building required. For those seeking to upgrade their ready to run RC car UK performance without major mechanical work, this differential kit provides exceptional value and handling improvements.
This differential is engineered for off-road use with NiMH and 2-cell LiPo batteries, making it ideal for recreational bashers and weekend warriors. If you intend to run 3-cell LiPo power, Traxxas recommends the alternative 6780 centre differential kit instead. With sealed construction and adjustable performance through different fluid viscosities, the TRX6814 allows you to fine-tune your vehicle's handling characteristics to suit your driving conditions and personal preferences.
Key Features
- Independent Power Transfer — The centre differential transfers power to the front and rear differentials independently, which means your vehicle delivers smooth, controlled power delivery even when driving across uneven, rough terrain. This independent system prevents wheel spin and loss of traction that occurs with standard differentials, resulting in dramatically improved cornering speed and overall vehicle stability.
- Sealed Differential Construction — The sealed design protects internal components from dirt, mud, and moisture commonly encountered during off-road RC driving sessions. This sealed construction significantly extends the lifespan of the differential and reduces maintenance requirements, keeping your RC model running smoothly for longer between services.
- Adjustable Performance Through Fluid Viscosity — You can customise the differential's behaviour by using different gear oil viscosities, allowing you to adapt the differential to specific driving conditions and your personal driving style. Thicker fluid provides more locking action for aggressive off-road driving, whilst thinner fluid offers more freespin for smooth circuit racing.
- Fully Assembled and Ready to Install — The centre differential arrives completely pre-assembled and pre-filled, requiring no complex building or internal adjustments. Your vehicle's modular design means installation takes just minutes, making this an accessible upgrade even for those without extensive mechanical experience.
- Multiple Spur Gear Options — Included are 50-T, 52-T, and 54-T spur gears, giving you flexibility to optimise performance for different motor combinations and driving conditions. This variety ensures you can match the differential to your specific setup and get the best possible handling characteristics.
- 32-Pitch Pinion Gear Compatibility — The centre differential requires a 32-pitch pinion gear, which is standard on compatible Traxxas models and readily available as an accessory. This compatibility ensures seamless integration with your existing Traxxas RC vehicle.
- NiMH and 2-Cell LiPo Optimised — Engineered specifically for off-road driving with NiMH batteries and 2-cell LiPo power systems, this differential delivers optimal performance within these power ranges. The design ensures reliable operation without overheating or component stress when used with recommended battery configurations.
Technical Performance
The Traxxas TRX6814 centre differential kit represents sophisticated drivetrain engineering designed to maximise the handling potential of your 4WD short course truck or rally car. Built with precision-machined internal components and sealed housing, this differential offers superior longevity compared to open designs. The independent power transfer system works by allowing the front and rear axles to rotate at different speeds whilst maintaining optimal torque distribution, a feature particularly valuable when navigating the demanding terrain and high-speed corners typical of UK RC off-road tracks and natural landscapes. The sealed construction keeps contamination out whilst retaining the specially formulated differential fluid that lubricates internal gears and determines the differential's locking characteristics. By selecting different fluid viscosities—ranging from thin, free-spinning oils to thick, locking compounds—you gain unprecedented control over your vehicle's handling balance. This adjustability transforms the TRX6814 from a simple differential into a tuning tool that lets you dial in precise performance characteristics. The included 50-T, 52-T, and 54-T spur gears provide multiple gearing options to match different motor types and driving conditions, ensuring you can extract maximum performance whether you're running brushless power systems or modified brushed setups. Installation is straightforward thanks to the fully assembled design, and the modular Traxxas platform means fitting takes minutes. The differential is rated for off-road use with NiMH and 2-cell LiPo battery systems; for drivers planning 3-cell LiPo upgrades, Traxxas recommends their alternative 6780 centre differential kit to ensure reliable operation under higher power outputs.
What's in the Box
- Traxxas Centre Differential Kit, fully assembled and pre-filled
- 50-T spur gear
- 52-T spur gear
- 54-T spur gear
- Installation hardware
What You Need to Complete
- 32-Pitch pinion gear (required for installation)
- Compatible Traxxas 4WD vehicle (Slash 4X4, Stampede 4X4, Rustler 4X4, Ford Fiesta ST Rally, or other compatible model)
- Differential fluid or gear oil of your chosen viscosity (for future tuning and maintenance)
Frequently Asked Questions
- Is the Traxxas centre differential kit suitable for beginners? — Yes, the TRX6814 is suitable for intermediate builders and owners with basic mechanical knowledge. Installation is straightforward thanks to the fully assembled design and modular Traxxas platform, with most drivers completing installation in under an hour. However, understanding differential tuning through fluid viscosity requires some experience, making this more of an intermediate-to-advanced upgrade rather than a true beginner component.
- What is the difference between the TRX6814 and the Traxxas 6780 centre differential? — The primary difference relates to battery compatibility. The TRX6814 is engineered for off-road use with NiMH and 2-cell LiPo batteries, whilst the 6780 centre differential kit is recommended for 3-cell LiPo compatibility. If you intend to upgrade to 3S LiPo power, Traxxas specifically recommends switching to the 6780 kit to ensure reliable operation and prevent potential component damage under higher power outputs.
- Which Traxxas vehicles is this differential compatible with? — The TRX6814 centre differential kit is compatible with a wide range of Traxxas 4WD models including Slash 4X4, Slash 4X4 VXL, Slash 4X4 Brushless, Stampede 4X4 VXL, Rustler 4X4, Rustler 4X4 Brushless, Ford Fiesta ST Rally, Ford Fiesta ST Rally VXL, Ford Fiesta ST Rally Brushless, Ford Raptor R 1:10, and other compatible 4WD models. Always verify your specific vehicle model before ordering to ensure compatibility.
- How does the centre differential improve handling? — The centre differential transfers power to front and rear axles independently, rather than locking them together. This independent power distribution provides smooth power delivery across rough terrain and significantly improves corner speed by reducing wheel spin and maintaining traction. The result is a vehicle that feels more planted, responsive, and controllable, particularly noticeable during high-speed cornering and when navigating technical off-road sections.
- Can I tune the differential after installation? — Yes, one of the key advantages of the TRX6814 is its adjustability through different gear oil viscosities. After installation, you can experiment with thinner or thicker differential fluids to customise locking behaviour and handling characteristics. Thicker fluids provide more locking for aggressive off-road driving, whilst thinner fluids offer freer rotation for smoother, faster circuit-style driving. This adjustability makes the differential a long-term tuning tool.
- What battery types does this differential work with? — The TRX6814 is specifically engineered for off-road use with NiMH (nickel-metal hydride) batteries and 2-cell LiPo (lithium polymer) battery systems. These battery types deliver appropriate power levels for the differential's mechanical design. For 3-cell LiPo compatibility, Traxxas recommends stepping up to the 6780 centre differential kit, which is rated for higher power outputs.
- Do I need any special tools to install this differential? — The TRX6814 comes fully assembled and ready to install with standard RC hobby tools. You'll need basic hex drivers and possibly a small screwdriver for installation, but no specialised differential tools are required. Traxxas's modular design philosophy means installation is straightforward enough for owners with basic mechanical experience.
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 Differential kit, centre (complete) TRX6814 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: Traxxas
- Part Number: TRX6814
- EAN: 0020334681409
- Product Type: Centre Differential Kit
- Tune-Up Type: Transmission
- Configuration: Fully assembled and pre-filled
- Differential Type: Sealed centre differential
- Included Spur Gears: 50-T, 52-T, 54-T
- Pinion Gear Requirement: 32-pitch pinion gear
- Power Delivery: Independent front and rear differential power transfer
- Adjustment Method: Different fluid viscosities for specific driving conditions
- Battery Compatibility: NiMH and 2-cell LiPo only
- 3-Cell LiPo Alternative: Traxxas 6780 centre differential kit recommended
- Installation Time: Minutes with modular Traxxas platform
- Compatible Vehicle Models: Slash 4X4, Slash 4X4 VXL, Slash 4X4 Brushless, Slash Ultimate 4x4 VXL, Stampede 4X4 VXL, Rustler 4X4, Rustler 4X4 Brushless, Ford Fiesta ST Rally, Ford Fiesta ST Rally VXL, Ford Fiesta ST Rally Brushless, Ford Raptor R 1:10 Pro Scale
- Construction: Sealed differential design
- Use Case: Off-road driving
- Performance Benefit: Smooth power delivery in rough conditions and maximum corner speed
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