Overview
The Traxxas Spur 78-tooth (2 pcs) TRX6646 is an essential drivetrain spare part designed for RC enthusiasts who demand reliable, high-quality replacement components for their LaTrax models. Whether you're a competitive racer, a weekend basher, or someone new to the RC hobby in the UK, having genuine OEM spare parts on hand is crucial for keeping your RC car UK collection running at peak performance. This two-pack of spur gears ensures you always have a replacement ready when needed, eliminating downtime and keeping your RC driving sessions uninterrupted.
Manufactured by Traxxas under their LaTrax brand, these 78-tooth spur gears are precision-engineered components that form a critical part of your vehicle's drivetrain system. The spur gear is one of the most important elements in any RC car's transmission, directly affecting acceleration, top speed, and overall driving characteristics. Whether you're upgrading your gearing for different terrain or simply replacing worn components, having quality OEM parts like these ensures optimal performance and reliability.
This product pack contains two individual 78-tooth spur gears, providing excellent value and peace of mind. For RC enthusiasts across the UK looking to maintain or upgrade their LaTrax models, these genuine Traxxas parts represent the perfect solution. They're designed to work seamlessly with your existing LaTrax drivetrain, ensuring compatibility and performance you can trust.
Key Features
- 78-Tooth Configuration — This specific tooth count determines your vehicle's gearing ratio and directly influences acceleration and top speed performance, making it essential to use the correct specification for your driving style and terrain.
- Pack of Two Gears — Receiving two spur gears in this pack means you'll always have a spare available, eliminating the frustration of being unable to drive while waiting for replacements and extending your RC hobby sessions.
- Genuine Traxxas/LaTrax Manufacturing — These spur gears are produced by Traxxas, ensuring they meet exact OEM specifications and quality standards, which guarantees perfect fitment and reliable performance in your LaTrax model.
- Drivetrain Spare Part — As a critical drivetrain component, these spur gears directly transfer power from your motor to the wheels, making them essential for acceleration, speed control, and overall vehicle handling characteristics.
- Easy Installation — Spur gears are straightforward to install on LaTrax models, allowing even novice RC enthusiasts to perform their own maintenance and keep their vehicles in top condition without specialist help.
Technical Performance
The Traxxas Spur 78-tooth gears represent precision-engineered drivetrain components manufactured to exacting standards. Spur gears function as the primary power transmission element in RC car drivetrains, converting the rotational force from your brushless or brushed motor into forward and reverse motion. The 78-tooth specification indicates the exact number of teeth on the gear, which works in conjunction with your pinion gear (the smaller gear on the motor shaft) to establish your vehicle's overall gear ratio. This ratio determines how quickly your wheels rotate relative to motor speed — a critical factor affecting acceleration, top speed, and battery efficiency. By choosing the correct spur gear tooth count, RC drivers can optimise their vehicle's performance for specific driving conditions, whether that means aggressive acceleration for off-road racing or higher top speed for speed runs. The two-pack format ensures you're never caught without a backup gear, which is especially important for competitive drivers or those who regularly bash their RC models hard. These genuine LaTrax components are built from durable materials designed to withstand the stresses of serious RC driving, providing long service life and consistent performance across numerous driving sessions.
What's in the Box
- Spur Gear, 78-tooth (quantity: 2)
Frequently Asked Questions
- What is a spur gear and why do I need replacement ones? — A spur gear is the main gear in your RC car's drivetrain that transfers power from the motor to your wheels. Over time, especially with heavy use or aggressive driving, spur gears can wear down, strip teeth, or become damaged. Having genuine replacement gears like these ensures your drivetrain continues to function smoothly and reliably, maintaining the acceleration and speed characteristics your LaTrax model was designed for.
- How do I know if my spur gear needs replacing? — Signs of a worn or damaged spur gear include slipping during acceleration, unusual grinding sounds from the drivetrain, loss of top speed, or visible damage to the gear teeth. If you notice any of these symptoms, it's time to install one of your replacement 78-tooth gears from this two-pack.
- Will these fit my RC car? — These gears are specifically designed for LaTrax models and manufactured to OEM Traxxas specifications. As long as your vehicle is a LaTrax model that originally used 78-tooth spur gears, these will fit perfectly. Always verify your vehicle's specifications before purchasing drivetrain components.
- What's the difference between tooth counts in spur gears? — The tooth count directly affects your vehicle's gear ratio and performance. A higher tooth count (like 78) on the spur gear paired with the same pinion gear creates a lower overall gear ratio, which favours acceleration and torque but may reduce top speed. Conversely, lower tooth counts favour higher top speeds but with less aggressive acceleration. Choosing the right combination depends on your driving style and the terrain you're tackling.
- Are these suitable for beginners? — Yes, whilst spur gear replacement is a maintenance task rather than something beginners need immediately, having these spares available is an excellent practice for anyone getting into RC. The installation process is straightforward and represents a great introduction to basic RC maintenance and troubleshooting for new hobbyists in the UK RC car scene.
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 Spur 78-tooth (2 pcs) TRX6646 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: Spur Gear
- Tooth Count: 78
- Quantity in Pack: 2
- Manufacturer: LaTrax (Traxxas)
- Part Number: TRX6646
- EAN: 20334664600
- Category: Drivetrain Spares
- Application: LaTrax RC Models
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- 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.
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