Overview
The Traxxas Ring gear, differential (2)/ pinion gear, differential (2 pcs) TRX9777 is an essential drivetrain spare part designed specifically for the TRX-4M range of 1/18 scale RC crawlers and trail trucks. Whether you're an experienced RC enthusiast running a competitive setup or a weekend basher enjoying outdoor trails, maintaining your RC car UK collection means having access to quality replacement components. This differential gear set represents genuine Traxxas engineering, ensuring your TRX-4M Ford Bronco, Land Rover Defender, Chevrolet K10, Ford F-150, or TRX-4MT monster truck maintains optimal performance on every trail and terrain.
Differential gears are critical components in any RC vehicle's drivetrain system. They work together to distribute power smoothly between the wheels, allowing for controlled cornering, improved traction, and more predictable handling characteristics. The TRX9777 includes both ring gears and pinion gears in a complete package, giving you everything needed to restore your differential to factory specifications or upgrade your existing setup. For anyone serious about their ready to run RC trail trucks or competitive crawlers, having replacement differential gears on hand is simply good maintenance practice.
RC Model Shop stocks this authentic Traxxas component as part of our comprehensive range of spare parts and upgrade components for the TRX-4M platform. This genuine part ensures compatibility with your existing Traxxas setup and maintains the performance characteristics your vehicle was engineered to deliver. Whether you've experienced differential wear through heavy use, damaged gears in a collision, or simply want a backup set for competitive events, the TRX9777 provides reliable, tested engineering you can trust.
Key Features
- Complete Differential Gear Set — This part includes both ring gears and pinion gears (two of each), providing everything required to rebuild or maintain your TRX-4M differential without needing to purchase multiple components separately.
- Genuine Traxxas Engineering — Manufactured to original equipment specifications by Traxxas, ensuring perfect fitment and performance integration with your TRX-4M chassis and drivetrain components.
- Broad Model Compatibility — Compatible with the entire TRX-4M range including the Ford Bronco in all available colours (Blue, Red, Orange, Black, White, Area 51), Land Rover Defender variants (Green, Light Blue, Pink, Silver, Tan, Black), Chevrolet K10 High Trail Truck models, Ford F-150 High Trail Truck options, and the TRX-4MT Monster Truck platform in all colour variants.
- Critical Performance Component — Differential gears directly impact your vehicle's handling, cornering stability, and traction characteristics, making them essential for maintaining the precise control these trail crawlers are known for.
- Durable Construction — Built to withstand the demanding conditions of RC trail running, rock crawling, and off-road exploration whilst maintaining precise tolerances for smooth operation.
- Easy Installation — As a standard Traxxas spare part, these gears integrate seamlessly into your existing TRX-4M differential housing, requiring no modifications or special tools beyond basic RC maintenance equipment.
Technical Performance
The differential system in the TRX-4M is a precisely engineered component that manages power distribution to the wheels during acceleration, braking, and cornering. The ring and pinion gears work in concert to create smooth, predictable power delivery whilst allowing wheels to rotate at different speeds when navigating turns. Traxxas has engineered these gears to exact tolerances, ensuring zero backlash under load whilst maintaining the smooth engagement characteristics essential for trail driving and rock crawling applications. The materials used in genuine Traxxas differential gears are selected for their durability under the stresses of RC trail running — whether you're climbing rocky obstacles, traversing mud, or pushing through high-speed turns on loose terrain. For the 1/18 scale TRX-4M platform, which is renowned for its sophisticated independent suspension and scaled-down rock crawling capabilities, maintaining your differential in perfect working order is fundamental to preserving the vehicle's handling balance and traction characteristics. These gears are most commonly required when maintaining older vehicles, recovering from damage, or when preparing a vehicle for competitive events where reliability is paramount.
What's in the Box
- Ring gear, differential (2 pieces)
- Pinion gear, differential (2 pieces)
Frequently Asked Questions
- What is a differential gear set and why would I need to replace it? — The differential gear set manages power distribution to your RC vehicle's wheels, allowing smooth cornering and traction control. You may need to replace these gears if they become worn through heavy use, suffer damage from a collision or impact, or if you're restoring a used vehicle. Over time, differential gears can experience wear that manifests as noise during cornering, slipping under load, or inconsistent handling. The TRX9777 provides genuine Traxxas replacement gears to restore your vehicle to factory specifications.
- Will this TRX9777 spare part fit my specific TRX-4M model? — Yes, the TRX9777 is compatible with all TRX-4M variants including the Ford Bronco 1/18 RTR 4x4 Trail Truck in Blue, Red, Orange, Black, White, and Area 51 colours, the Land Rover Defender 1/18 RTR in Green, Light Blue, Pink, Silver, Tan, and Black variants, the 1/18 TRX-4M Chevrolet K10 High Trail Truck in Blue, Red, and Black, the Ford F-150 High Trail Truck in Black, Brown, and Blue, as well as the TRX-4MT F150 and K10 monster truck models. Always verify your specific model number matches before ordering.
- Do I need any special tools to install these differential gears? — Installation of differential gears requires basic RC maintenance knowledge and standard hobby tools. You'll need to disassemble your differential housing and carefully install the new gears, ensuring proper alignment and torque specifications according to Traxxas assembly guidelines. If you're inexperienced with differential work, we recommend consulting the official Traxxas assembly manual or seeking assistance from experienced RC mechanics at RC Model Shop.
- How often should differential gears be replaced? — Differential gears are designed to last through years of normal use for hobby RC drivers. However, heavy competition use, aggressive bashing, or damage from impacts may necessitate replacement sooner. Regular inspection for noise, grinding, or slipping during turns can indicate wear. Keeping your differential clean and properly lubricated extends gear life significantly.
- Can I use aftermarket differential gears instead of genuine Traxxas parts? — Whilst aftermarket options exist, genuine Traxxas differential gears are engineered to exact specifications for the TRX-4M platform, ensuring perfect fitment, correct gear ratios, and optimal performance. Using genuine parts guarantees compatibility and maintains your vehicle's warranty where applicable.
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 Ring gear, differential (2)/ pinion gear, differential (2 pcs) TRX9777 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.
- Part Number: TRX9777
- EAN: 020334977700
- Brand: Traxxas
- Spare Part Type: Drivetrain Spares
- Component Description: Ring gear, differential (2 pieces) and Pinion gear, differential (2 pieces)
- Compatible with TRX-4M Ford Bronco 1/18 RTR 4x4 Trail Truck (all colour variants: Blue, Red, Orange, Black, White, Area 51)
- Compatible with TRX-4M Land Rover Defender 1/18 RTR 4x4 Trail Truck (all colour variants: Green, Light Blue, Pink, Silver, Tan, Black)
- Compatible with TRX-4M Chevrolet K10 High Trail Truck 1/18 (all colour variants: Blue, Red, Black)
- Compatible with TRX-4M Ford F-150 High Trail Truck 1/18 (all colour variants: Black, Brown, Blue)
- Compatible with TRX-4MT K10 Monster Truck 1/18 (all colour variants: Red, Black)
- Compatible with TRX-4MT F150 Monster Truck 1/18 (all colour variants: Black, Blue)
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.
