Overview
The Traxxas Linkage, locking Differential (TRX5679) is an essential replacement and upgrade component for serious RC enthusiasts running Traxxas TRX-6 and TRX-4 trail trucks. This precision-engineered differential linkage assembly is designed to maintain the exceptional performance characteristics that have made Traxxas the dominant force in off-road RC vehicle design and manufacturing across the UK and beyond. Whether you're a weekend basher pushing your rig to its limits on challenging terrain, or a dedicated RC competitor who demands the very best in drivetrain reliability, this component plays a crucial role in delivering the remote-locking differential functionality that defines modern trail truck performance.
The T-Lock remote-locking differential system is one of the most innovative features in contemporary RC truck engineering, and this linkage assembly is the mechanical heart that makes it all possible. The ability to lock and unlock your differentials on the fly from your transmitter gives you unparalleled control over traction and power delivery, allowing you to instantly adapt your vehicle's drivetrain characteristics to match whatever terrain you're facing. Whether you're tackling rock gardens, muddy hillsides, sand dunes, or technical woodland trails, having the right differential configuration at your fingertips means the difference between getting stuck and charging through obstacles that would stop conventional RC trucks dead in their tracks.
This replacement linkage assembly represents genuine Traxxas engineering excellence, manufactured to the exacting tolerances required for reliable remote locking differential operation across hundreds of cycles and countless hours of off-road driving. If your differential linkage has become worn, damaged, or you're rebuilding your truck for maximum performance, the TRX5679 is the authorised genuine part that ensures your T-Lock system continues to deliver the responsiveness and reliability that Traxxas customers have come to expect.
Key Features
- Complete Remote-Locking Differential Linkage Assembly — This is not simply a cable or wire; it's a fully engineered mechanical assembly that includes the ball cup, precision linkage wires, bellcrank, and bellcrank mount, making it a complete solution for maintaining or restoring your differential locking functionality without needing to source multiple components separately.
- Ball Cup and Linkage Wires — The included ball cup provides a robust connection point that accommodates the rotational movement required as your differential locking mechanism engages and disengages, whilst the precision-manufactured linkage wires transfer control inputs with minimal play or slop.
- Bellcrank Component — The bellcrank acts as a mechanical lever that converts the linear motion from your servo into the precise angular movement needed to activate and deactivate your differential locks, providing reliable actuation with consistent feel across all operating conditions.
- Bellcrank Mount — A properly engineered mounting solution ensures the bellcrank maintains correct alignment and positioning throughout the locking and unlocking cycle, preventing binding or resistance that could affect your truck's responsiveness or drain servo power.
- 3x10mm Stainless Steel Hardware — The inclusion of high-quality stainless steel fasteners means superior corrosion resistance compared to standard steel, particularly important if you regularly drive in muddy, wet conditions or near saltwater environments that are common across UK trial grounds and beaches.
- Genuine Traxxas Component — As an authorised OEM part manufactured to exact Traxxas specifications, this linkage assembly ensures perfect fit and function with your TRX-6 or TRX-4, with no compatibility issues or fitment complications.
- Precision Manufacturing Tolerances — Every component in this assembly is manufactured to tight tolerances that ensure smooth, reliable operation without excess play, binding, or wear that could compromise the responsiveness of your differential locking system.
Technical Performance
The TRX5679 linkage assembly represents the culmination of years of Traxxas research and development into remote-locking differential systems for high-performance RC trail trucks. The engineering behind this component is substantial; every element has been designed to minimise friction, eliminate play, and deliver consistent actuation across thousands of lock and unlock cycles. The ball cup connects to your servo's output arm and accommodates the precise angles required as your differential mechanism transitions between locked and unlocked states. The linkage wires are manufactured from precision materials that resist bending, twisting, and fatigue failure even under the demanding conditions you'll encounter off-road. The bellcrank multiplies the force from your servo, ensuring that even smaller servos can reliably operate the locking mechanism without struggle or hesitation. The stainless steel hardware resists corrosion from moisture, mud, and the harsh chemicals found in off-road environments. When properly assembled and maintained, this linkage system delivers split-second responsiveness to your transmitter inputs, allowing you to lock your differentials exactly when you need maximum traction and unlock them when you need drivetrain efficiency and handling refinement. This is not a cosmetic upgrade; it's a critical component that directly impacts your truck's capability on technical terrain and your ability to extract maximum performance from your Traxxas platform.
What's in the Box
- Ball cup for servo linkage connection
- Precision linkage wires (complete set)
- Bellcrank mechanism component
- Bellcrank mounting bracket
- 3x10mm stainless steel fasteners
Frequently Asked Questions
- Which Traxxas models is this linkage assembly compatible with? — The TRX5679 is designed for use with Traxxas TRX-6 models, including the Mercedes-Benz G 63 AMG 6x6 and the Ultimate RC Hauler, as well as compatible TRX-4 trail truck platforms that feature remote-locking T-Lock differential systems.
- Why would I need to replace this component? — Over time and with regular use, the linkage wires can develop play or slight bends from impacts, the ball cup can wear and develop slack, and the bellcrank can become loose or misaligned. A worn linkage assembly results in delayed or sluggish differential locking response, making it harder to engage your locks precisely when needed. Replacing it restores the snappy, responsive feel that defines a properly functioning T-Lock system.
- Is this difficult to install? — Installation requires basic mechanical knowledge and standard RC tools, but it is not overly complex for anyone with experience maintaining RC vehicles. The assembly connects to your servo output and mounts to your chassis via the included bellcrank mount. If you're unsure about installation, RC Model Shop staff are available to provide guidance or assistance.
- Can I use this as an upgrade on a different Traxxas model? — This assembly is specifically engineered for models equipped with the T-Lock remote-locking differential system. Installing it on incompatible platforms would not function correctly. Always verify compatibility with your specific Traxxas model before ordering.
- What maintenance does this component require? — After muddy or wet driving sessions, rinse the linkage assembly with clean water to prevent mud buildup that could cause binding. Ensure the fasteners remain tight and the linkage wires are straight and undamaged. Periodically check that the bellcrank pivots smoothly without binding or excessive resistance.
- Is this part suitable for racing or just recreational bashing? — The TRX5679 is a genuine OEM component used on factory Traxxas trucks regardless of whether they're driven competitively or recreationally. It delivers the precision and reliability demanded by both serious competitors and weekend enthusiasts who push their rigs hard on challenging terrain.
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 Linkage, locking Differential (includes ball cup, linkage wires) / bellcrank / bellcrank mount / 3x10mm SS TRX5679 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
- Model Number: TRX5679
- EAN: 020334567901
- Component Type: Linkage, locking Differential assembly
- Spare Part Category: Chassis Spares
- Included Components: Ball cup, linkage wires, bellcrank, bellcrank mount, 3x10mm stainless steel fasteners
- Compatible Models: Traxxas TRX-6 Mercedes-Benz G 63 AMG 6x6, Traxxas TRX-6 Ultimate RC Hauler, Traxxas TRX-4 trail trucks with T-Lock remote-locking differentials
- Hardware: 3x10mm stainless steel fasteners
- System Type: Remote-locking T-Lock differential linkage
- Function: Enables remote control of differential locking via transmitter servo input
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.
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- 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.
