Traxxas 17-T Pinion Gear 32-Pitch Hardened Steel TRX3947X

Overview

The Traxxas 17-T Pinion Gear (32-pitch) Set TRX3947X is an essential replacement and upgrade component for serious RC car enthusiasts across the UK. Whether you're running a Traxxas Rustler Ultimate VXL, TRX-4 Crawler, or TRX-4 Defender, this hardened steel pinion gear delivers the durability and performance you need to keep your RC vehicle running at its best. Pinion gears are critical drivetrain components that transfer power from your motor to the spur gear, making gear selection crucial for optimising your RC car's acceleration, top speed, and overall driving characteristics.

This genuine Traxxas component is manufactured to exacting standards using hardened steel construction, ensuring exceptional longevity even under demanding driving conditions. The 17-tooth configuration is ideal for bashers and crawlers who prioritise torque and acceleration over pure top speed, making it a popular choice among UK RC hobbyists who enjoy technical terrain and challenging off-road environments. If you're looking to fine-tune your RC car's performance or replace a worn pinion gear, the Traxxas 17-T is a proven upgrade that will transform your driving experience.

RC cars require regular maintenance, and drivetrain components like pinion gears are wear items that eventually need replacement. By choosing genuine Traxxas parts, you're investing in reliability, compatibility, and performance that budget alternatives simply cannot match. Every RC enthusiast in the UK, from casual weekend bashers to competitive racers, understands the importance of using quality OEM components to maintain their vehicles' integrity and longevity.

Key Features

• Hardened Steel Construction — This pinion gear is manufactured from hardened steel, which provides significantly greater durability and wear resistance compared to standard steel or plastic gears. Hardened steel can withstand the repetitive stress of high-torque applications and maintains its tooth profile far longer, reducing the frequency of replacements and ensuring consistent performance throughout the gear's service life.
• 32-Pitch Gear Specification — The 32-pitch (32dp) specification denotes the gear's module and ensures perfect compatibility with Traxxas spur gears and drivetrain components. This standardised pitch is essential for proper mesh, engagement and power transmission, and any deviation from this specification will result in poor performance, excessive wear and potential drivetrain failure.
• 17-Tooth Configuration — The 17-tooth count is specifically designed for vehicles that prioritise acceleration and low-end torque over maximum top speed. This tooth count provides an excellent balance for most driving styles, delivering responsive acceleration suitable for crawling, technical terrain and everyday bashing, whilst maintaining adequate speed for recreational driving.
• 3.2mm Bore Diameter — The precisely machined 3.2mm bore is engineered to fit perfectly onto standard Traxxas motor shafts without slippage or excessive play. This tight tolerance ensures positive power transfer from motor to drivetrain, eliminating energy loss and maintaining the crisp, responsive handling you expect from genuine Traxxas components.
• Secure Set Screw Fitting — The gear includes a set screw mechanism that locks the pinion gear firmly onto the motor shaft, preventing rotation or slippage during acceleration or hard cornering. This secure attachment method is standard across Traxxas platforms and ensures predictable, reliable power delivery in all driving conditions.
• Genuine Traxxas Component — As an official Traxxas part, this pinion gear is manufactured to the same exacting standards as components fitted to new vehicles, ensuring perfect fitment, compatibility and longevity. Choosing genuine OEM parts guarantees you're getting the exact same quality and engineering that Traxxas vehicles are renowned for worldwide.

Technical Performance

The Traxxas 17-T Pinion Gear represents precision engineering at its finest, delivering the performance characteristics that professional and recreational RC drivers demand. At 17 teeth with 32-pitch specification, this gear is calibrated for vehicles where torque and acceleration are prioritised over extreme top speed, making it ideal for Traxxas Rustler Ultimate VXL 4x4 brushless models, TRX-4 2021 Ford Bronco crawlers, and TRX-4 Defender platforms. The hardened steel construction undergoes specialised heat treatment processes that increase surface hardness whilst maintaining the structural integrity of the gear tooth, preventing tooth stripping, cracking and deformation even under sustained high-torque applications. The 3.2mm bore diameter is precision-machined to exacting tolerances, ensuring a snug fit on standard Traxxas motor shafts without wobble or play that could introduce inefficiencies into the drivetrain. Whether you're running a brushless motor system at full throttle through rough terrain or performing technical crawling manoeuvres that demand maximum low-end torque, this pinion gear delivers the reliability and consistency you need. The hardened steel material also demonstrates superior resistance to corrosion and oxidation compared to standard alloys, making it an excellent choice for UK drivers who operate their vehicles in wet conditions or use them year-round. Performance optimisation in RC vehicles is all about understanding the relationship between pinion and spur gear ratios; the 17-tooth configuration works in harmony with your vehicle's spur gear to determine the overall final drive ratio, which directly affects acceleration characteristics and top speed. Engineers and experienced bashers choose 17-tooth pinions precisely because this tooth count represents an ideal middle ground for most driving styles and terrain types.

What's in the Box

• 1x Traxxas 17-T Pinion Gear (32-pitch)
• 1x Set Screw for secure motor shaft attachment

Frequently Asked Questions

• What vehicles is the Traxxas 17-T Pinion Gear compatible with? — This pinion gear is compatible with several popular Traxxas models including the Rustler Ultimate VXL 4x4 1:10 Brushless (available in blue and green variants), TRX-4 2021 Ford Bronco 1/10 Crawler (available in red, white, orange and black), TRX-4 Defender 4WD RTR (available in red, silver, green and sand). If you own any of these models, this pinion gear will drop straight in with perfect fitment and compatibility. Always verify your model number before ordering to ensure absolute compatibility.
• How often do I need to replace my RC pinion gear? — Pinion gear lifespan depends heavily on driving style, terrain, motor power and maintenance practices. Casual weekend bashers might expect 6-12 months of regular use before replacement becomes necessary, whilst competitive drivers or those running high-powered brushless motors may need replacement every 2-3 months. Regular inspection for worn or chipped teeth is recommended; if you notice sluggish acceleration, unusual grinding noises or visible tooth damage, it's time to replace your pinion gear immediately to prevent catastrophic drivetrain damage.
• Why choose a 17-tooth pinion instead of 16 or 18 teeth? — Each tooth count produces a different final drive ratio and therefore different performance characteristics. A 17-tooth pinion provides the optimal balance between acceleration and top speed for most recreational driving, crawling and technical terrain work. Lower tooth counts (like 16T) provide slightly higher acceleration but lower top speed, whilst higher tooth counts (like 18T) favour top speed at the expense of low-end torque. Your choice depends on your driving style and the terrain you tackle most frequently; 17-tooth is the most versatile choice for UK drivers with mixed driving conditions.
• Is hardened steel construction really necessary? — Absolutely. Hardened steel pinion gears last significantly longer than standard steel or plastic alternatives, reducing your replacement frequency and overall maintenance costs. The hardened surface resists tooth stripping and deformation, ensures consistent mesh with the spur gear, and maintains predictable performance throughout the gear's service life. For anyone running brushless motors or high-power drivetrain setups, hardened steel is the only sensible choice; budget alternatives will inevitably let you down mid-session.
• Can I mix and match pinion gears from different brands? — Whilst it may be technically possible to install non-Traxxas gears on a Traxxas vehicle, we strongly recommend using genuine OEM components exclusively. Traxxas vehicles are engineered as complete systems; using aftermarket or incompatible gears can result in poor mesh, increased wear, reduced performance and potential drivetrain damage. Genuine Traxxas parts are relatively affordable and the peace of mind is well worth it; stick with OEM components for reliability.
• What tools do I need to install this pinion gear? — Installation requires basic RC tools including an Allen wrench or hex key set to remove the motor endbell or motor mount (depending on your vehicle's design), and a small screwdriver to tighten the set screw. Most RC enthusiasts already have these tools in their maintenance kit. Always remove the pinion gear carefully without damaging the motor shaft, clean the shaft thoroughly before installing the new gear, and tighten the set screw firmly but do not over-tighten as this can strip the threads or damage the shaft.

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 17-T Pinion Gear (32-pitch) Set TRX3947X 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.