Traxxas 16-Tooth Pinion Gear Heavy Duty 32-Pitch RC Component TRX3946X

Overview

The Traxxas 16-T Pinion Gear (32-pitch) Set TRX3946X is an essential upgrade component for RC enthusiasts looking to optimise their vehicle's performance and drivetrain reliability. This heavy-duty pinion gear is specifically engineered for Traxxas models, offering superior durability and precision engineering that serious RC car UK hobbyists demand. Whether you're running a Traxxas Rustler Ultimate VXL, TRX-4 crawler, or TRX-4 Defender, this replacement pinion gear ensures consistent power delivery and smooth acceleration across a wide range of driving conditions.

As a purpose-built replacement component from Traxxas, this 16-tooth pinion gear delivers the performance characteristics that competitive racers and weekend bashers alike have come to expect from the brand's transmission systems. The 32-pitch specification provides excellent compatibility with standard spur gear arrangements, making it an ideal choice for drivers who want to fine-tune their gearing ratios without requiring major chassis modifications. For anyone serious about maintaining their brushless RC truck or crawler in peak condition, this pinion gear represents a wise investment in long-term drivetrain health and performance consistency.

RC car enthusiasts throughout the UK recognise that transmission components are critical to overall vehicle performance. This Traxxas heavy-duty gear set is manufactured to exacting tolerances, ensuring that power from your brushless motor is transmitted efficiently to the wheels. With a 3.2mm bore designed to fit Traxxas standard motor mounts, this pinion gear integrates seamlessly into existing setups, making it perfect for both preventative maintenance and performance upgrades.

Key Features

• Heavy-Duty Construction — This pinion gear is manufactured using Traxxas's proven heavy-duty specifications, delivering enhanced durability compared to standard components and ensuring your transmission can handle aggressive driving styles and high-speed runs without premature wear or failure.
• 16-Tooth Configuration — The 16-tooth design provides an optimal balance between acceleration and top-end speed, offering excellent compatibility with 45-tooth and 39-tooth spur gears when used with original Traxxas motor mounting holes, as confirmed by experienced users in the RC community.
• 32-Pitch Gear Specification — The 32-pitch standard ensures this pinion gear works seamlessly with Traxxas spur gears and drivetrain components, maintaining proper mesh and engagement for smooth, reliable power transmission without excessive noise or vibration.
• 3.2mm Bore Diameter — The precision-machined 3.2mm bore fits perfectly onto Traxxas motor shafts, ensuring a secure fit that prevents slippage and maintains consistent torque delivery during acceleration, cornering, and high-speed driving.
• Set Screw Design — This pinion gear features a set screw retention system, allowing for secure mounting on your motor shaft whilst remaining easy to install, adjust, and remove when maintenance or upgrades are required.
• Universal Traxxas Compatibility — This gear is officially compatible with multiple Traxxas 1/10 scale models including the Rustler Ultimate VXL 4x4 brushless truck in green and blue variants, the TRX-4 2021 Ford Bronco crawler in orange, black, red and white, and the TRX-4 Defender 4WD RTR in green, sand, red and silver colour options.
• Precision Engineering — Each tooth is precisely cut to ensure smooth engagement with your spur gear, reducing drivetrain stress and extending the lifespan of your entire transmission system during repeated acceleration cycles and competitive racing.
• OEM Traxxas Component — As an official Traxxas replacement part, this pinion gear meets the manufacturer's strict quality standards and integrates perfectly with genuine Traxxas drivetrain systems without fitment issues or compatibility concerns.

Technical Performance

The Traxxas 16-T Pinion Gear (32-pitch) represents the pinnacle of transmission component design for 1/10 scale RC cars and crawlers. With its 3.2mm bore diameter, this pinion gear is engineered to accept power from Traxxas's industry-standard motor mounts, delivering torque directly to your spur gear without slippage or play. The 32-pitch specification is the industry standard for 1/10 scale RC vehicles, ensuring compatibility with the widest range of Traxxas transmission components and aftermarket upgrades. The heavy-duty construction utilises hardened materials and precision manufacturing techniques to withstand the extreme forces generated by brushless motors pulling 3-4S LiPo batteries at full throttle. Users in the UK RC community have successfully paired this 16-tooth pinion with 45-tooth and 39-tooth spur gears whilst maintaining factory motor mounting holes, demonstrating the flexibility and performance capability of this component. The set screw retention system provides a secure mechanical lock that prevents gear slip during acceleration, cornering, and emergency braking manoeuvres. Whether you're driving a Traxxas Rustler Ultimate VXL brushless truck with its high-output motor or a TRX-4 crawler tackling technical terrain, this pinion gear delivers consistent, reliable power transmission without deflection or noise. The precision tooth profile ensures smooth engagement and disengagement with spur gears, minimising drivetrain stress and extending component lifespan through hundreds of driving hours.

What's in the Box

• 1x Traxxas 16-T Pinion Gear (32-pitch)
• Set screw for secure shaft mounting

Frequently Asked Questions

• Which Traxxas models is this 16-tooth pinion gear compatible with? — This TRX3946X pinion gear is officially compatible with the Traxxas Rustler Ultimate VXL 4x4 brushless truck (available in green and blue), the TRX-4 2021 Ford Bronco crawler (in orange, black, red and white variants), and the TRX-4 Defender 4WD RTR (in green, sand, red and silver options). It will also work with other Traxxas models featuring standard 3.2mm motor shafts and 32-pitch drivetrain systems.
• What spur gear combinations work best with this 16-tooth pinion? — According to verified user feedback from UK RC drivers, this 16-tooth pinion pairs exceptionally well with 45-tooth and 39-tooth spur gears whilst maintaining compatibility with original Traxxas motor mounting holes. This flexibility allows drivers to customise their gearing ratios for different driving styles and terrain types without requiring chassis modifications.
• How often should I replace my pinion gear? — With proper maintenance and regular cleaning, a heavy-duty pinion gear like the TRX3946X should last hundreds of driving hours. However, if you notice excessive noise, vibration, visible tooth wear, or slippage during acceleration, it's time to replace your pinion. Regular inspection during maintenance routines will help you identify wear before it affects performance.
• Is this gear suitable for high-speed racing? — Absolutely. The heavy-duty construction and precision engineering of this pinion gear make it ideal for competitive racing and high-speed driving. The 16-tooth configuration provides excellent acceleration whilst still allowing for reasonable top-end speeds, making it versatile for both circuit racing and outdoor bashing.
• Will this pinion gear work with my brushless RC car? — Yes, this pinion gear is designed specifically for brushless RC vehicles. It's compatible with Traxxas brushless motors and ESCs, handling the high torque output and rapid acceleration that brushless systems deliver without slipping or stripping.
• How do I install the set screw? — Simply slide the pinion gear onto your motor shaft, align the bore with the shaft, then tighten the set screw using an Allen key until the gear sits flush against the motor and cannot rotate independently. Ensure the set screw is tight enough to prevent slippage but don't over-tighten, as this can damage the motor shaft.
• What is the difference between 32-pitch and other pitch sizes? — Pitch size refers to the tooth profile and spacing. 32-pitch gears are the standard for 1/10 scale RC vehicles and are not compatible with different pitch sizes. If you're unsure of your vehicle's pitch specification, consult your Traxxas manual or contact RC Model Shop for guidance.

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 16-T Pinion Gear (32-pitch) Set TRX3946X 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.