Overview
The Traxxas 21-T Pinion Gear (32-pitch) Set TRX3951X is an essential replacement and upgrade component for serious RC enthusiasts in the UK who demand reliability and performance from their crawlers and scale RC vehicles. This heavy-duty hardened steel pinion gear is engineered to deliver superior durability and consistent performance, making it an ideal choice whether you're upgrading your existing RC car UK setup or maintaining your trusted crawler. The 21-tooth configuration at 32-pitch provides the perfect balance of torque and speed characteristics that Traxxas is renowned for, and this genuine component ensures your RC vehicle continues to perform at its best.
Built from hardened steel, this pinion gear represents the quality and engineering excellence that has made Traxxas the preferred choice for RC enthusiasts across the United Kingdom. Whether you're a dedicated basher who puts serious wear on your components, a competitive racer, or someone who simply wants to maintain their RC crawler in peak condition, this replacement pinion is designed to withstand the demands of regular use and deliver reliable power transfer from motor to transmission. The precision-engineered teeth ensure smooth engagement with your spur gear, reducing noise and wear while maximising efficiency and lifespan.
For anyone serious about their brushless RC car or scale crawler, having quality replacement gears on hand is essential maintenance practice. This Traxxas pinion gear comes with a set screw for secure mounting, ensuring it stays precisely positioned during intense driving sessions. Order this genuine Traxxas component from RC Model Shop today and keep your RC vehicle running at peak performance.
Key Features
- Hardened Steel Construction — The pinion gear is manufactured from hardened steel, which provides exceptional durability and resistance to wear even under the most demanding driving conditions, ensuring your RC car UK investment lasts longer and performs more reliably than softer materials.
- 21-Tooth Configuration — This specific tooth count is optimised for balanced performance across a wide range of RC vehicles, providing an ideal compromise between acceleration and top speed that works well for both casual weekend bashers and more serious drivers.
- 32-Pitch Specification — The 32-pitch (32dp) sizing ensures compatibility with standard Traxxas drivetrain components and many other quality RC gears, giving you flexibility when upgrading or replacing worn parts on your RC car.
- Set Screw Included — The pinion gear comes complete with a set screw for secure mounting directly onto your motor shaft, ensuring precise alignment and preventing slippage or misalignment during acceleration and braking.
- 3.2mm Bore Diameter — The precisely machined 3.2mm bore is designed to fit standard Traxxas motor shafts, ensuring a perfect fit and reducing installation time when you need to get back on the track or trail.
- Genuine Traxxas Component — As an official Traxxas part, this pinion gear meets the manufacturer's exacting quality standards and ensures complete compatibility with your RC vehicle, eliminating guesswork when sourcing replacement parts.
Technical Performance
The Traxxas 21-T Pinion Gear (32-pitch) represents precision engineering at its finest, combining hardened steel durability with meticulous manufacturing tolerances to deliver consistent performance session after session. The hardened steel material provides substantially greater longevity compared to softer steel alternatives, resisting the constant stress of engagement with the spur gear whilst maintaining precise tooth geometry. At 21 teeth with 32-pitch specification, this pinion delivers the optimal balance for scale crawlers and general-purpose RC vehicles, offering sufficient torque for obstacle negotiation whilst maintaining reasonable top-end speed. The 3.2mm bore diameter matches Traxxas motor shafts perfectly, and the included set screw provides rock-solid retention even during extreme acceleration or aggressive braking. For anyone operating a brushless RC car or competing in scale crawler events, maintaining quality drivetrain components like this pinion gear is essential to keeping your vehicle running smoothly and reliably. The precision manufacturing ensures smooth, quiet engagement with the spur gear, reducing mechanical stress on the entire drivetrain and extending the lifespan of all your transmission components.
What's in the Box
- Traxxas 21-T Pinion Gear (32-pitch) hardened steel
- Set screw for secure motor shaft installation
Frequently Asked Questions
- What vehicles are compatible with the Traxxas 21-T Pinion Gear TRX3951X? — This pinion gear is compatible with a wide range of Traxxas RC vehicles including the TRX-4 2021 Ford Bronco 1/10 Crawler (available in red, white, orange, and black variants) and the TRX-4 Defender 4WD RTR with Clipless Mounting (available in red, silver, green, and sand colours). The 32-pitch specification and 3.2mm bore make it suitable for many other quality RC cars and crawlers that use standard Traxxas-compatible drivetrains.
- Why should I choose a hardened steel pinion gear over standard alternatives? — Hardened steel provides significantly greater wear resistance and durability compared to softer materials, meaning your pinion gear will maintain its precise tooth geometry through many more driving sessions and won't need replacing as frequently, ultimately saving you money in the long run on replacements and maintenance.
- How difficult is it to install this pinion gear? — Installation is straightforward for anyone with basic RC maintenance knowledge; you simply remove the set screw from your existing pinion, slide the old gear off your motor shaft, position this new one in place, and secure it tightly with the included set screw, which typically takes only a few minutes.
- What does 32-pitch mean and why does it matter? — Pitch refers to the gear tooth spacing standard, and 32-pitch (32dp) is a common specification used across many quality RC drivetrain components; using gears with matching pitch ensures smooth engagement and prevents binding, noise, and premature wear.
- Is this suitable for beginners? — Yes, this pinion gear is suitable for RC enthusiasts of all skill levels; it's a straightforward replacement component that anyone can install, and having quality genuine parts in your RC car is excellent practice whether you're just starting out or you've been driving for years.
- How often will I need to replace this pinion gear? — With proper maintenance and the superior durability of hardened steel, this pinion should last significantly longer than standard alternatives, depending on your driving intensity and frequency, but regular inspection during maintenance sessions will tell you when replacement is necessary.
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 21-T Pinion Gear (32-pitch) Set TRX3951X 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.
- Manufacturer: Traxxas
- Model Number: TRX3951X
- EAN: 0020334395191
- Component Type: Pinion Gear
- Tooth Count: 21 teeth
- Gear Pitch: 32 DP (32-pitch)
- Bore Diameter: 3.2mm
- Material: Hardened steel
- Included Accessories: Set screw for motor shaft mounting
- Compatible Vehicles: Traxxas TRX-4 2021 Ford Bronco 1/10 Crawler (red, white, orange, black), Traxxas TRX-4 Defender 4WD RTR with Clipless Mounting (red, silver, green, sand)
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- 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.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
