Overview
The Fastrax M0.5 21T Steel Pinion Gear (2.3mm) is an essential replacement and upgrade component for RC enthusiasts in the UK who demand precision engineering and reliable performance. This high-quality steel pinion gear is designed to deliver consistent power transmission in your electric RC car, buggy, or crawler, making it an ideal choice for both seasoned competitors and weekend bashers looking to maintain or enhance their vehicles. Whether you're running a Traxxas model, an Axial Racing crawler, a Team Associated buggy, or any other 2WD or 4WD RC car that utilises M0.5 metric gearing, this pinion gear represents excellent value and durability.
Built with precision steel construction, the Fastrax M0.5 21T pinion gear offers superior strength and longevity compared to lower-quality alternatives. The 2.3mm bore diameter ensures perfect compatibility with standard RC motor shafts, whilst the 21-tooth configuration provides an optimal balance between acceleration and top speed depending on your spur gear setup. This is a genuine spare part that RC enthusiasts across the UK trust for reliable performance, whether you're replacing a worn gear after months of bashing or upgrading your drivetrain for better efficiency.
Fastrax has built a reputation for manufacturing high-quality RC spare parts and accessories that deliver excellent performance without the premium price tag of some competitor brands. This pinion gear exemplifies that commitment to value and quality. Perfect for anyone serious about maintaining their ready to run RC cars in peak condition, the M0.5 21T steel pinion gear is a must-have in any RC toolbox or spares collection.
Key Features
- Premium Steel Construction — This pinion gear is manufactured from hardened steel rather than cheaper plastic or lower-grade metal, ensuring exceptional durability and wear resistance even under intense driving conditions and repeated acceleration cycles.
- M0.5 Metric Module — The M0.5 specification means this gear is designed to mesh perfectly with M0.5 spur gears commonly found across most popular RC car platforms, delivering smooth power transmission and minimal backlash.
- 21-Tooth Configuration — The 21-tooth count strikes an excellent balance in the acceleration versus top speed equation, making it suitable for a wide range of driving styles and terrain types from carpet to outdoor bashings.
- 2.3mm Bore Diameter — The precisely machined 2.3mm bore ensures a secure fit on standard RC electric motor shafts without wobbling or slipping, maintaining consistent engagement and power delivery.
- Wide Compatibility — This pinion gear is suitable for use with numerous RC platforms including Element Enduro, HPI crawlers, Mugen vehicles, Rival MT10 models, Tamiya platforms, Team Associated RC cars, Team Losi vehicles, Traxxas TRX-4 crawlers, and various Axial Racing models.
- Affordable Replacement Option — At an excellent price point, this genuine Fastrax component offers outstanding value compared to OEM alternatives, making it easy to keep your RC fleet running smoothly without breaking the budget.
- Easy Installation — The standard M0.5 interface means installation is straightforward and requires no special tools or modifications, making this an ideal choice for DIY maintenance and tuning.
Technical Performance
The Fastrax M0.5 21T Steel Pinion Gear delivers exceptional technical performance characteristics that make it a trusted choice for RC car UK enthusiasts. The steel construction provides significantly greater hardness and durability compared to nylon or plastic alternatives, resisting stripping and wear even under the demands of high-torque electric motors running on 2S or 3S LiPo batteries. The precision machining ensures minimal runout and perfect tooth engagement with compatible M0.5 spur gears, resulting in smooth power transmission with virtually no backlash that could compromise handling or create unwanted noise during acceleration. The 21-tooth count provides a versatile gear ratio that works well across various motor KV ratings, from lower-torque high-speed brushless motors to higher-torque crawler-oriented setups. Whether you're running a competition-grade RC buggy requiring precision engineering or a casual basher truck, this pinion gear maintains consistent performance across repeated use cycles. The 2.3mm bore diameter is precision-engineered to international standards, ensuring compatibility across multiple manufacturers' motor shafts without requiring adapters or spacers. This pinion gear is engineered for longevity and reliability, making it an essential component for anyone serious about maintaining their brushless RC cars and electric buggies in optimal working condition.
What's in the Box
- Fastrax M0.5 21T Steel Pinion Gear (1x unit)
Frequently Asked Questions
- Is the Fastrax M0.5 21T pinion gear compatible with my RC car? — This gear is compatible with any RC vehicle using M0.5 metric module gearing with a 2.3mm motor shaft bore. This includes popular platforms such as Traxxas TRX-4 crawlers, Axial Racing models, Team Associated buggies, Team Losi vehicles, Tamiya RC cars, HPI crawlers, Mugen platforms, Rival MT10 trucks, and Element Enduro models. Check your vehicle's manual or motor specifications to confirm M0.5 compatibility before purchasing.
- What is the difference between M0.5 and other metric pinion gears? — The M0.5 specification refers to the metric module, which determines the tooth pitch and spacing. M0.5 gears are designed to mesh with M0.5 spur gears and will not fit correctly with M1.0 or other module sizes. Using the correct module ensures smooth engagement, minimal noise, and optimal power transmission.
- Why choose steel over plastic pinion gears? — Steel pinion gears offer superior durability and longevity compared to nylon or plastic alternatives, particularly when running high-torque electric motors. Steel resists stripping and wear far more effectively, meaning fewer replacements over time and better value for money.
- What motor shaft size does this gear fit? — The 2.3mm bore diameter fits standard RC electric motor shafts that measure 2.3mm in diameter. This is a common size across brushless and brushed RC motors used in 1/10 scale and smaller vehicles.
- Is this suitable for beginners? — Yes, this pinion gear is suitable for anyone maintaining or upgrading their RC car, from complete beginners to experienced racers. Installation is straightforward and requires only basic tools.
- What should I look for when replacing my pinion gear? — Replace your pinion gear if you notice slipping during acceleration, grinding noises, or visible tooth damage. The Fastrax M0.5 21T is an excellent replacement choice for keeping your RC car performing at its best.
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 FASTRAX M0.5 21T STEEL PINION GEAR (2.3MM) FASTM5-21 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.
- Brand: Fastrax
- Product Code: FASTM5-21
- EAN: 5056135785508
- Gear Type: Pinion Gear
- Module: M0.5
- Tooth Count: 21T
- Material: Steel
- Bore Diameter: 2.3mm
- Compatibility: Element Enduro, HPI crawlers, Mugen vehicles, Rival MT10, Tamiya platforms, Team Associated cars, Team Losi vehicles, Traxxas TRX-4, Axial Racing models
- Availability: In Stock
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.
