Overview
Unlock maximum speed on your TRX-4M with the Traxxas Gear Set, transmission, speed (9.7:1 Reduction ratio) / pinion gear, 11-tooth TRX9776X. This transmission upgrade is engineered specifically for drivers who want to boost the top-end performance of their 1/18 scale RC crawler. Whether you're enjoying high-speed runs on smooth terrain or looking to maximise velocity across open ground, this speed gear set delivers the acceleration and top speed that enthusiasts demand. If you're searching for RC car upgrades UK or transmission tuning options for your Traxxas TRX-4M, this genuine Traxxas component offers the quality and reliability you expect from the world's leading RC manufacturer.
The TRX9776X is not a complete new transmission—it's a precision tune-up component that replaces your existing transmission gears and motor pinion to fundamentally alter your vehicle's gearing ratio. This means faster acceleration off the line and significantly increased top speed on suitable surfaces. For RC enthusiasts in the UK looking to transform their TRX-4M performance characteristics, this speed gear set is an essential upgrade that requires no complex installation knowledge beyond basic RC maintenance skills.
Compatible with the full range of 1/18 TRX-4M models including the Ford Bronco, Land Rover Defender, Chevrolet K10, and Ford F-150 in both trail and monster truck configurations, this gear set offers consistent performance upgrades across the entire TRX-4M platform. Genuine Traxxas parts ensure perfect fit and reliable operation, making this the preferred choice for RC model enthusiasts across the UK who demand authentic, manufacturer-approved components.
Key Features
- 9.7:1 Reduction Ratio — The high reduction ratio of 9.7:1 is specifically designed to maximise speed by allowing the motor to spin faster relative to the wheels, resulting in significantly higher top-end velocity and quicker acceleration when compared to lower-geared transmission options.
- Complete Transmission Gear Set — This package includes all the transmission gears required for installation, meaning you're not purchasing individual components piecemeal; instead, you get a matched set engineered to work together seamlessly for optimal performance and reliability.
- 11-Tooth Motor Pinion Gear — The new motor pinion is specifically calibrated for this speed configuration, ensuring that the motor-to-transmission power transfer is optimised for maximum efficiency and responsiveness when accelerating and maintaining high speeds.
- Designed for TRX-4M Platform — Engineered exclusively for Traxxas TRX-4M scale-model crawlers, this gear set guarantees perfect compatibility with Ford Bronco, Land Rover Defender, Chevrolet K10, Ford F-150, and TRX-4MT monster truck variants, eliminating any guesswork or compatibility concerns.
- Speed-Optimised Setup — Unlike low-range or crawler-focused transmission ratios, this speed configuration prioritises velocity and rapid acceleration, making it the perfect tune-up for drivers who want their TRX-4M to perform at maximum velocity on open terrain.
- Genuine Traxxas Component — As an authentic Traxxas OEM part, this gear set meets the manufacturer's exacting quality standards, ensuring precise manufacturing tolerances, material quality, and long-term reliability that aftermarket alternatives cannot guarantee.
- Easy Swap Installation — Replacing your transmission gears is a straightforward maintenance task that can be completed by most RC enthusiasts with basic tools and mechanical knowledge, allowing you to upgrade your TRX-4M's performance without specialist intervention.
- Performance Tuning Option — This gear set represents a mid-range performance tuning solution that bridges the gap between stock crawler gearing and extreme high-speed configurations, making it ideal for drivers seeking noticeable performance improvement without sacrificing vehicle control.
Technical Performance
The Traxxas TRX9776X transmission gear set represents a critical performance tuning component for 1/18 scale RC crawlers seeking maximum velocity. The 9.7:1 reduction ratio is significantly higher than stock crawler-focused transmission ratios, which means the motor's RPM is translated more aggressively to wheel speed, resulting in faster top-end performance across smooth surfaces. This gear configuration delivers the acceleration and sustained high-speed running that drivers demand when transitioning from technical rock-crawling terrain to open ground. The inclusion of a specifically matched 11-tooth motor pinion ensures that the entire transmission chain—from motor shaft through layshaft to output—operates with perfect synchronisation and minimal friction loss. Traxxas engineers these components with precision-cut teeth and high-quality materials to withstand the stresses of repeated high-speed runs whilst maintaining smooth, quiet operation. The reduction ratio works in direct proportion to your motor's characteristics; paired with a suitable brushless motor system, this gear set unlocks substantial performance gains. For RC car enthusiasts in the UK operating TRX-4M vehicles, this transmission upgrade represents one of the most effective modifications available, offering tangible improvements in acceleration and terminal velocity. It's important to note that this speed configuration is optimised for smooth terrain and high-speed running; Traxxas specifically recommends against using this gear set in snow, mud, rock crawling scenarios, or other high-resistance environments where the increased gearing ratio would place excessive strain on drivetrain components.
What's in the Box
- Complete transmission gear set
- 11-tooth motor pinion gear
- All transmission gears required for installation
Frequently Asked Questions
- Which TRX-4M models is this transmission gear set compatible with? — The TRX9776X is compatible with the entire TRX-4M platform, including the 1/18 Ford Bronco (available in black, white, Area 51, blue, red, and orange variants), 1/18 Land Rover Defender (available in silver, tan, black, green, light blue, and pink), 1/18 Chevrolet K10 High Trail Truck (available in red, black, and blue), 1/18 Ford F-150 High Trail Truck (available in blue, black, and brown), and both TRX-4MT monster truck variants in F-150 and K10 configurations. If you own any of these models, this gear set will fit perfectly.
- What's the difference between the speed gear set and other transmission options for TRX-4M? — Traxxas offers multiple transmission gear ratios optimised for different driving styles and terrain types. The speed gear set features a 9.7:1 reduction ratio designed for maximum top-end velocity on smooth surfaces, whereas low-range or crawler-focused alternatives provide lower reduction ratios for superior torque and control in technical, high-resistance environments. Choose the speed gear set if you prioritise acceleration and maximum velocity; choose lower-ratio alternatives if you frequently tackle mud, snow, rocks, or steep crawling terrain.
- Will this gear set improve my TRX-4M's performance immediately? — Yes, you'll notice a tangible increase in acceleration and top speed as soon as you install this gear set and operate your vehicle. The 9.7:1 ratio translates motor speed to wheel speed more aggressively than stock or low-range alternatives, resulting in noticeably faster performance. The improvement is most dramatic on smooth, open terrain where high speed can be achieved safely.
- Is this suitable for beginners? — Whilst this is a genuine Traxxas component designed for TRX-4M vehicles, transmission replacement requires moderate mechanical knowledge and appropriate tools. If you're comfortable with basic RC maintenance and have access to the necessary tools, you can perform the installation yourself. If you're uncertain about the process, consider having the gear set installed by an experienced RC technician or at your local RC hobby shop.
- What surfaces are best for this speed gear set? — This transmission is optimised for smooth, open terrain such as flat grassland, tarmac, concrete, and hard-packed dirt where your TRX-4M can safely achieve and maintain high speeds. Traxxas specifically recommends against using this gear set in snow, mud, rocky terrain, or during technical rock crawling, as the high reduction ratio places excessive stress on drivetrain components in high-resistance environments.
- Do I need any other parts to use this gear set? — The TRX9776X includes everything needed to replace your existing transmission gears—all transmission gears plus the 11-tooth motor pinion. No additional components are required for installation beyond basic RC maintenance tools such as screwdrivers and potentially a small hex key set.
- How does the 11-tooth pinion gear affect performance? — The 11-tooth motor pinion is engineered specifically to work with the 9.7:1 reduction ratio transmission, ensuring optimal power transfer from motor to gearbox. Tooth count on the pinion gear influences acceleration characteristics and overall power delivery; the 11-tooth pinion in this set is calibrated to complement the transmission ratio for maximum speed performance on suitable 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 Gear Set, transmission, speed (9.7:1 Reduction ratio) / pinion gear, 11-tooth TRX9776X 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
- Part Number: TRX9776X
- EAN: 020334977694
- Product Type: Transmission Gear Set
- Application: Speed/High-Speed Tuning
- Reduction Ratio: 9.7:1
- Motor Pinion Teeth: 11-tooth
- Contents: Complete transmission gear set with motor pinion
- Compatible Models: TRX-4M 1/18 Ford Bronco (all colour variants), 1/18 Land Rover Defender (all colour variants), 1/18 Chevrolet K10 High Trail Truck, 1/18 Ford F-150 High Trail Truck, TRX-4MT F-150 Monster Truck, TRX-4MT K10 Monster Truck
- Installation Type: Transmission replacement/upgrade
- Performance Focus: Maximum speed and acceleration
- Not Recommended For: Snow, mud, rock crawling, high-resistance surfaces
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.
