Overview
The Fastrax 48DP 39T Aluminium 7075 Pinion Gear is a precision-engineered component designed for RC enthusiasts who demand reliability and performance from their RC car upgrades. Whether you're a serious racer, weekend basher, or collector of RC models in the UK, this pinion gear represents the kind of quality component that separates a well-tuned RC vehicle from an ordinary one. Manufactured from premium 7075 aluminium alloy, this pinion gear delivers the durability and strength needed for consistent performance across a wide range of RC applications and driving conditions.
Pinion gears are critical drivetrain components that transfer power from your motor to the main transmission system, making them essential for smooth acceleration, reliable top speed delivery, and overall vehicle responsiveness. The 48-pitch (DP) tooth specification on this Fastrax gear ensures compatibility with a broad selection of RC models and setups, whilst the 39-tooth count offers a specific gearing ratio suited to various racing and bashing scenarios. For anyone in the UK building, upgrading or maintaining an RC car, having quality replacement gears in your parts box is essential—and this Fastrax pinion gear is an excellent choice for those who refuse to compromise on quality.
Fastrax is a trusted brand within the RC hobby community, known for producing high-quality aftermarket parts and accessories that RC drivers rely on to keep their vehicles performing at their best. This pinion gear is no exception, offering the precision engineering and robust construction that RC enthusiasts expect when investing in upgrade components.
Key Features
- 48 Pitch (DP) Specification — The 48-pitch tooth profile ensures this gear is compatible with a wide range of RC cars and drivetrain systems, making it a versatile upgrade option for different vehicle types and setups across the RC hobby market.
- 39-Tooth Configuration — The specific 39-tooth count delivers a carefully balanced gear ratio designed to optimise performance characteristics, whether you're focused on acceleration, top speed or mid-range torque delivery.
- Premium 7075 Aluminium Alloy Construction — Manufactured from high-grade 7075 aluminium, this pinion gear offers exceptional strength-to-weight ratio and superior durability compared to standard steel gears, reducing wear and extending component lifespan during intense driving sessions.
- Precision Engineering — Fastrax pinion gears are manufactured to tight tolerances, ensuring smooth meshing with mating gears and eliminating play that could compromise vehicle handling and acceleration response.
- Lightweight Performance Advantage — The aluminium construction keeps rotating mass to a minimum, which translates to faster acceleration and quicker throttle response, particularly beneficial for competitive racing and demanding driving styles.
- Corrosion Resistance — The 7075 aluminium alloy offers improved resistance to corrosion and oxidation compared to ferrous alternatives, making this gear suitable for varied driving conditions and outdoor use across the UK.
- Drop-In Replacement Compatibility — Designed as a direct upgrade component, this pinion gear integrates seamlessly into compatible RC vehicles without requiring additional modifications or adaptations to existing drivetrain systems.
Technical Performance
The Fastrax 48DP 39T Aluminium 7075 Pinion Gear represents precision engineering at its finest for the RC car UK market. Manufactured from aerospace-grade 7075 aluminium alloy, this component delivers exceptional strength combined with lightweight performance characteristics that serious RC drivers demand. The 48-pitch specification aligns with industry-standard RC drivetrain systems, whilst the 39-tooth configuration provides an optimised gear ratio suitable for a variety of driving styles and vehicle platforms. Unlike standard steel pinion gears that can suffer from wear, flex and noise under sustained driving loads, the 7075 aluminium construction maintains dimensional stability and delivers smoother power delivery throughout extended driving sessions. The precision-cut teeth ensure perfect meshing with compatible spur gears, eliminating unwanted play and vibration that can compromise acceleration feel and directional control. The lightweight nature of this aluminium gear reduces overall drivetrain inertia, allowing for quicker motor response and more immediate throttle feedback—particularly noticeable during acceleration runs and competitive racing scenarios. Whether you're upgrading a brushless RC car, maintaining an electric-powered vehicle or building a competition-grade setup, this pinion gear provides the reliability and performance consistency that RC enthusiasts throughout the UK have come to expect from the Fastrax brand. The corrosion-resistant properties of 7075 aluminium make this an excellent choice for outdoor driving in varied UK weather conditions, ensuring longevity and consistent performance over extended periods.
What's in the Box
- Fastrax 48DP 39T Aluminium 7075 Pinion Gear
Frequently Asked Questions
- What is a pinion gear and why do I need to replace it? — A pinion gear is a small gear mounted on your motor shaft that transfers rotational power to the main spur gear in your RC vehicle's transmission. Over time, through normal use, pinion gears can wear down, develop flat spots or damaged teeth, or become stripped, all of which degrade performance and handling. Upgrading to a quality replacement like this Fastrax 48DP 39T aluminium gear ensures consistent power delivery and smooth acceleration response.
- Will this pinion gear fit my RC car? — The 48-pitch (DP) specification means this gear is compatible with most standard RC drivetrain systems that use 48-pitch gears. However, you should verify that your specific vehicle platform uses 48-pitch gears and that your motor shaft diameter matches the gear's bore size. Consult your vehicle's manual or contact our team at RC Model Shop for compatibility confirmation if you're uncertain.
- Why choose aluminium over steel pinion gears? — Aluminium 7075 offers several advantages: it's significantly lighter than steel, reducing overall drivetrain mass for quicker acceleration; it delivers smoother power transfer with reduced vibration; it provides excellent corrosion resistance for UK outdoor use; and it offers superior strength-to-weight ratio. The only trade-off is that aluminium is slightly softer than hardened steel, meaning it may require more frequent replacement in extremely high-intensity competitive environments, but for most RC drivers, the performance benefits outweigh this consideration.
- Is this gear suitable for beginners? — Yes, absolutely. This pinion gear is an ideal upgrade component for any RC enthusiast, from complete beginners assembling their first RC car to experienced racers maintaining competition vehicles. It's a straightforward replacement part that requires only basic tools and mechanical knowledge to install, making it perfect for those learning about RC car maintenance and upgrade procedures.
- What's the difference between 48DP and other pitch specifications? — The DP (diametral pitch) number indicates the tooth size and spacing on the gear. A 48DP gear has 48 teeth per inch of gear diameter, which is an industry standard for most mid-sized RC cars. Other common specifications include 64DP (smaller teeth, typically for smaller vehicles) and 32DP (larger teeth for bigger trucks). Using the correct pitch specification for your vehicle is essential for proper meshing and performance.
- How long does an aluminium pinion gear typically last? — Under normal recreational driving conditions, a quality aluminium pinion gear like this Fastrax component should provide thousands of running hours of reliable service. Actual lifespan depends on driving intensity, vehicle setup, motor power and maintenance practices. Regular inspection during routine maintenance will alert you to wear patterns before they impact performance.
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 48DP 39T ALUMINIUM 7075 PINION GEAR FAST48-39 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
- Model Number: FAST48-39
- Product Type: Pinion Gear
- Pitch Specification: 48DP (48 Diametral Pitch)
- Tooth Count: 39 teeth
- Material: Aluminium 7075 alloy
- Stock Status: 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.
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- 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.
