Traxxas 90-Tooth 48-Pitch Spur Gear for Torque-Control Slipper Clutch TRX4690

Overview

The Traxxas Spur 90-tooth (48-pitch) gear (TRX4690) is an essential performance-tuning component for RC enthusiasts running Traxxas models equipped with Torque-Control slipper clutches. Whether you're a seasoned basher, weekend racer, or discovering the world of RC cars and trucks in the UK, this genuine Traxxas spare part allows you to optimise your vehicle's performance characteristics to suit your specific running conditions and driving style. Spur gear selection is one of the most effective and affordable ways to fine-tune your RC car's behaviour, making this 90-tooth gear an invaluable addition to any serious RC hobbyist's spares collection.

Traxxas is renowned worldwide for manufacturing high-quality RC components and complete models, and their spur gear range represents the pinnacle of precision engineering and reliability. This 90-tooth 48-pitch spur gear is manufactured to exacting standards, ensuring perfect mesh with your vehicle's pinion gear and motor system. By changing your spur gear ratio, you can dramatically alter the balance between acceleration and top speed, allowing you to dial in your RC truck or car's performance for different terrain types, weather conditions, and racing scenarios. Whether you're bashing through muddy off-road terrain, competing in club races, or enjoying high-speed runs on tarmac, the correct gear ratio can make all the difference to your driving experience.

This specific 90-tooth configuration is compatible with a wide range of popular Traxxas short-course truck models, including the Slash HD XL-5, Slash VXL-3S brushless, and Slash Extreme HD VXL models in all their various colour options. The gear is designed specifically for use with Torque-Control slipper clutch systems, which protect your drivetrain from damage during high-stress situations whilst still allowing smooth power delivery to the wheels. For UK-based RC enthusiasts looking for genuine Traxxas spares with guaranteed quality and compatibility, this 48-pitch spur gear represents outstanding value and reliability.

Key Features

• 90-Tooth Configuration — The 90-tooth count provides a specific gear ratio that emphasises acceleration over top speed, making this gear ideal for technical terrain, tight courses, and situations where responsive handling is more valuable than outright velocity. This tooth count is a popular choice for bashers and off-road drivers who prioritise manoeuvrability.
• 48-Pitch Standard — The 48-pitch specification means this spur gear is designed to mesh perfectly with 48-pitch pinion gears commonly fitted to Traxxas vehicles, ensuring smooth engagement, minimal backlash, and efficient power transmission from your motor to the wheels without slipping or grinding.
• Torque-Control Slipper Clutch Compatibility — This gear is specifically engineered to work seamlessly with Traxxas Torque-Control slipper clutch systems, which automatically slip under excessive load to protect your motor, transmission, and drivetrain components from damage whilst maintaining controlled power delivery during demanding driving conditions.
• Performance Tuning Capability — By selecting this 90-tooth spur gear, you can significantly alter your vehicle's performance characteristics, allowing you to fine-tune acceleration, top speed, and overall handling balance to match your preferred driving style and the specific running conditions you encounter.
• Genuine Traxxas Quality — Manufactured by Traxxas using the same precision engineering and quality control standards applied to their complete RC vehicles, this spur gear offers guaranteed durability, precise tooth geometry, and long service life under demanding use.
• Easy Installation — Replacing your spur gear is a straightforward maintenance task that requires no special tools or technical expertise, making this an ideal upgrade for hobbyists who want to experiment with different gearing options without complex modifications.
• Wide Model Compatibility — This 90-tooth gear is compatible with multiple Traxxas short-course truck models including the Slash HD XL-5 in blue, orange, green, and red variants, as well as the Slash VXL-3S brushless models and Slash Extreme HD VXL brushless trucks in their various colour options.

Technical Performance

The Traxxas Spur 90-tooth (48-pitch) gear represents a carefully engineered component designed to deliver optimal performance when working in conjunction with your vehicle's motor, pinion gear, and Torque-Control slipper clutch system. The 90-tooth configuration represents a significant gear reduction compared to smaller tooth counts, meaning the motor will turn the wheels fewer times per motor rotation, resulting in increased torque delivery and significantly improved acceleration at the expense of top speed. This gearing is particularly effective for short-course truck racing and aggressive off-road bashing where rapid acceleration out of corners and responsive throttle response are more important than achieving maximum velocity on open straights. The 48-pitch standard ensures compatibility with all Traxxas vehicles that use 48-pitch drivetrain components, and the precise tooth profile ensures smooth, quiet operation with minimal vibration or noise during acceleration and deceleration. Built from durable materials to withstand the stresses of competitive racing and everyday bashing, this spur gear will maintain its tooth geometry and mesh characteristics through countless gearing changes, making it an excellent long-term investment in your RC vehicle's performance optimisation toolkit.

What's in the Box

• Traxxas 90-tooth spur gear (48-pitch)

Frequently Asked Questions

• Will this 90-tooth spur gear fit my Traxxas RC truck or short-course car? — This 90-tooth 48-pitch gear is specifically compatible with Traxxas models equipped with Torque-Control slipper clutches, including the Slash HD XL-5, Slash VXL-3S brushless, and Slash Extreme HD VXL brushless variants. Always consult your vehicle's owner's manual to confirm compatibility and to understand the gearing recommendations for your specific model before making any changes.
• What is the difference between tooth counts in spur gears, and how does this 90-tooth gear compare? — Spur gears with fewer teeth (such as 76 or 78 tooth) create a higher gear ratio, delivering more top speed but less acceleration. This 90-tooth configuration provides more teeth, creating a lower gear ratio that significantly improves acceleration and responsiveness, making it ideal for technical courses and tight terrain where handling is prioritised over maximum velocity. The choice of tooth count allows you to fine-tune your vehicle's performance to match your driving style and the terrain you're racing or bashing on.
• How do I know if I need a different spur gear for my RC truck? — If you find your vehicle is struggling with acceleration or wheelies excessively during hard acceleration, a higher tooth count spur gear like this 90-tooth option will improve low-end torque delivery. Conversely, if you want higher top speed and your vehicle feels sluggish, you might consider a lower tooth count. Traxxas recommends consulting your owner's manual for the gearing options best suited to your specific model and intended use.
• Is this spur gear suitable for both racing and casual bashing? — Yes, the 90-tooth spur gear works effectively for both competitive racing on short-course tracks and casual bashing on rough terrain. The emphasis on acceleration and responsive handling makes it particularly valuable for technical courses, but the improved torque delivery also benefits general recreational driving by making the vehicle feel more responsive and easier to control.
• How often should I replace my spur gear? — The lifespan of a spur gear depends on usage intensity, driving style, and maintenance standards. For casual users, a spur gear can last many months or even years of regular use. Competitive racers and aggressive bashers should inspect their spur gear regularly for tooth wear or damage, as a damaged gear can cause poor mesh alignment and drivetrain inefficiency. The affordable price point of this spare part makes it sensible to keep a spare on hand for competitions or trips.
• What is the Torque-Control slipper clutch and why is it important? — The Torque-Control slipper clutch is a sophisticated component that automatically reduces power transmission to the wheels when excessive load is detected, protecting your motor, transmission, and drivetrain from catastrophic damage during hard impacts, rapid acceleration, or wheelies. This gear is specifically designed to work with this system, ensuring that both components function together seamlessly to protect your investment while maintaining smooth power delivery during normal driving.

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 90-tooth (48-pitch) (for models with Torque-Control slipper clutch) TRX4690 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.