Traxxas Spur Gear 40-Tooth 1.0 Metric Pitch RC Drivetrain Component TRX3955

Overview

The Traxxas Spur 40-tooth (1.0 metric pitch) TRX3955 is an essential upgrade component for serious RC enthusiasts in the UK looking to enhance the performance and durability of their Traxxas models. As an optional spur gear, this precision-engineered drivetrain component allows you to fine-tune your RC car's final drive ratio, making it perfect for those who want to customise their setup for different racing conditions, terrain types, and driving applications. Whether you're a competitive racer, weekend basher, or someone who enjoys pushing your ready to run RC car to its limits, this upgrade delivers the strength and reliability that Traxxas is renowned for across the UK RC hobby community.

The standard factory spur gear supplied with most Traxxas models is a 36-tooth configuration, but upgrading to the 40-tooth variant opens up new possibilities for performance tuning. This gear upgrade is particularly popular among owners of models like the Traxxas Revo and other high-performance vehicles who want increased durability and enhanced torque delivery. The 1.0 metric pitch specification ensures perfect compatibility with your existing drivetrain, and customer reviews consistently highlight that this upgraded spur gear feels significantly stronger and more robust than the stock component, making it a must-have spare for anyone running an overpowered or heavily modified RC car.

As an RC car UK enthusiast, you'll appreciate that this is a genuine Traxxas spare part backed by the manufacturer's quality standards. The 40-tooth spur gear represents a popular intermediate gear ratio choice that strikes a balance between acceleration and top-end speed, making it versatile for both on-road and off-road applications depending on your model.

Key Features

• 40-tooth configuration — This larger spur gear compared to the standard 36-tooth component allows for finer control over your vehicle's final drive ratio, enabling you to tune performance for specific racing conditions or terrain types. A 40-tooth gear provides a different balance of acceleration and speed compared to the stock option.
• 1.0 metric pitch specification — The precise 1.0 metric pitch ensures absolute compatibility with Traxxas drivetrain components and maintains perfect meshing with your pinion gear, guaranteeing smooth power delivery and reliable operation every time you run your RC car.
• Enhanced durability compared to stock — Multiple UK-based RC enthusiasts have reported that this upgraded spur gear is noticeably stronger than the factory-standard component, making it an excellent choice if you're running a more powerful motor setup or want greater longevity from your drivetrain.
• Optional upgrade design — Traxxas engineered this spur gear as an optional component, meaning you can easily swap between different gear ratios to fine-tune your RC car's performance without requiring major modifications or rebuilds.
• Ideal for overpowered models — If you've upgraded your RC car with a more powerful motor or enhanced it with tuning modifications, this heavier-duty spur gear provides the mechanical strength needed to handle increased power output reliably.
• Genuine Traxxas manufacturing — As an official Traxxas spare part, this spur gear is manufactured to the same exacting standards as all Traxxas components, ensuring quality, precision and long-term reliability in all driving conditions.

Technical Performance

The Traxxas Spur 40-tooth (1.0 metric pitch) TRX3955 is a precision drivetrain component engineered from durable materials selected specifically to withstand the demands of high-performance RC car operation. The 1.0 metric pitch specification is a critical engineering standard that determines how the spur gear meshes with your pinion gear; this metric pitch ensures smooth engagement, efficient power transfer, and minimal backlash in the drivetrain. The 40-tooth tooth count represents an upgrade from the standard 36-tooth configuration, effectively changing your vehicle's gear ratio and allowing you to customise the balance between acceleration and top speed. In practical terms, this means you can adjust how your RC car performs on different surfaces — whether you're racing on smooth tarmac, rough terrain, or mixed-condition tracks. The reported increased strength compared to factory components makes this spur gear particularly suitable for RC enthusiasts in the UK who run brushless motors, high-voltage battery systems, or who have performed engine modifications that increase power output. The engineering precision of Traxxas components ensures that this spur gear will provide years of reliable service when properly maintained, and the standardised 1.0 metric pitch ensures compatibility across multiple Traxxas model ranges including the popular Revo platform.

What's in the Box

• Traxxas Spur 40-tooth spur gear (1.0 metric pitch)

Frequently Asked Questions

• What vehicles is the Traxxas TRX3955 40-tooth spur gear compatible with? — This spur gear is designed for Traxxas models that use 1.0 metric pitch drivetrain components, including the Traxxas Revo and various other models in the Traxxas range. Check your vehicle's documentation to confirm compatibility before purchasing, as different Traxxas models may use different gear specifications.
• How does the 40-tooth gear compare to the standard 36-tooth spur gear? — The standard Traxxas spur gear supplied out-of-the-box is a 36-tooth component. By upgrading to the 40-tooth variant, you increase the gear ratio, which typically results in different acceleration and top-speed characteristics. The larger 40-tooth gear generally provides lower final drive ratio, which can improve acceleration and hill-climbing ability whilst potentially reducing top speed, depending on your pinion gear selection.
• Is this spur gear suitable for beginners? — Whilst the TRX3955 is a drivetrain component that requires basic mechanical knowledge to install, it's not specifically designed for beginners. The spur gear itself is straightforward to fit if you're comfortable performing basic RC car maintenance, but it's a performance upgrade component best suited to those already familiar with their RC vehicle's drivetrain and maintenance procedures.
• Why do reviewers say this gear is stronger than stock? — Multiple UK customers have reported that the TRX3955 feels noticeably stronger and more durable than the factory-standard 36-tooth spur gear. This makes it particularly valuable if you're running an overpowered motor setup, using high-voltage LiPo batteries, or if you've modified your RC car for increased performance and need a drivetrain component that can handle the extra power reliably.
• What tools do I need to install this spur gear? — Installing a spur gear typically requires basic RC car tools including hex keys or wrenches appropriate for your model, and potentially a gear puller depending on your vehicle design. Consult your Traxxas model's instruction manual or service guide for specific installation procedures and torque specifications.
• Is the 1.0 metric pitch standard across Traxxas? — The 1.0 metric pitch is a common standard used across many Traxxas models, but not all. Always verify your specific vehicle's specifications before purchasing this spur gear to ensure compatibility with your RC car's existing drivetrain components.
• Can I use this gear to adjust my RC car's performance? — Yes, one of the primary reasons to upgrade your spur gear is performance tuning. By changing from a 36-tooth to a 40-tooth spur gear, you modify the overall gear ratio of your drivetrain, which affects acceleration, top speed, and how your RC car behaves under different driving conditions. Different gear ratios are favoured for different applications and terrain types.

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 40-tooth (1.0 metric pitch) TRX3955 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.