Fastrax 48DP 21T Aluminium 7075 Pinion Gear FAST48-21

Overview

The Fastrax 48DP 21T Aluminium 7075 Pinion Gear is a precision-engineered drivetrain component designed for RC enthusiasts who demand reliability and performance from their vehicles. This high-quality pinion gear is manufactured from aerospace-grade 7075 aluminium alloy, ensuring exceptional durability and longevity even under demanding racing conditions. Whether you're running a competitive RC buggy, truck, or truggy, this pinion gear represents the kind of upgrade that serious hobbyists choose when they want to maximise their RC car's potential and ensure consistent performance lap after lap.

Built to exacting standards, the Fastrax pinion gear integrates seamlessly with 48-pitch drivetrain systems and pairs perfectly with 21-tooth specifications that suit a wide range of vehicle types and racing applications. RC enthusiasts across the UK trust Fastrax components for their reliability, precise manufacturing tolerances, and ability to withstand the rigours of both casual bashing and serious competition. This is the kind of part that separates weekend warriors from dedicated RC racers – it's the attention to detail in components like this that makes the difference between a good run and a winning run.

If you're upgrading your RC car UK collection or replacing worn drivetrain components, the Fastrax 48DP 21T Pinion Gear delivers the quality and performance you expect from an established RC parts manufacturer. This component is essential for anyone serious about maintaining peak performance in their ready to run RC vehicles or competition builds.

Key Features

• 48DP Pitch Design — The 48-pitch (DP) specification ensures compatibility with standard RC drivetrain systems, allowing this pinion gear to work reliably with matched spur gears and transmission components across numerous vehicle platforms and manufacturers.
• 21-Tooth Configuration — The 21-tooth count provides a balanced gear ratio suitable for a wide variety of RC applications, from off-road buggies to on-road racers, making it one of the most versatile tooth counts available for performance-focused hobbyists.
• 7075 Aluminium Alloy Construction — Manufactured from aerospace-grade 7075 aluminium, this pinion gear offers exceptional strength-to-weight ratio and superior durability compared to standard materials, resisting wear and deformation even under sustained high-load racing conditions.
• Precision Engineering — Fastrax pinion gears are machined to exact tolerances, ensuring smooth meshing with spur gears, reduced drivetrain noise, and consistent power delivery throughout your RC car's operating envelope.
• Longevity and Reliability — The robust construction of this aluminium pinion gear means it resists stripping, chipping, and wear far better than alternative materials, making it an excellent investment for serious RC car enthusiasts who run regularly.
• Universal Compatibility — As a standard 48DP component, this pinion gear will integrate with a huge range of RC vehicles and manufacturers' platforms, making it suitable for upgrading multiple vehicles in your collection.

Technical Performance

The Fastrax 48DP 21T Aluminium 7075 Pinion Gear represents the pinnacle of drivetrain component engineering for RC vehicles. The 48-pitch specification is the industry standard for precision RC racing, offering the perfect balance between gear tooth strength and smooth engagement. The 7075 aluminium alloy used in this pinion gear's construction is the same high-strength material specified in aerospace applications – a testament to Fastrax's commitment to quality. Unlike cheaper alternatives made from plastic or low-grade metals, this aluminium pinion gear will maintain its dimensional accuracy and tooth profile even after hundreds of runs, ensuring your RC car UK maintains consistent performance. The 21-tooth count is ideally suited for balanced acceleration and top-end speed across a broad range of RC vehicle types, from 1/10 buggies and trucks to specialist competition platforms. The precision manufacturing process ensures that mesh backlash is minimised, resulting in crisp power delivery, reduced drivetrain losses, and that responsive feel that competitive racers demand. Whether you're upgrading a ready to run RC vehicle or building a competition-grade setup, this pinion gear will serve as a reliable foundation for your drivetrain. The superior hardness of 7075 aluminium compared to nylon or softer metals means gear wear is negligible, even with regular use on high-grip racing surfaces. For anyone serious about RC performance, the investment in quality pinion gears like this one pays dividends in reliability, consistency, and longevity.

What's in the Box

• Fastrax 48DP 21T Aluminium 7075 Pinion Gear

Frequently Asked Questions

• What does 48DP mean on this pinion gear? — DP stands for Diametral Pitch, which is the industry standard measurement for gear tooth spacing. 48DP means there are 48 teeth per inch of pitch diameter, making this a precision racing-grade specification. This is the standard pitch used in competitive RC racing worldwide and ensures compatibility with matched spur gears from quality manufacturers.
• Will this 21T pinion gear fit my RC car? — This is a universal-fit component that works with any RC vehicle running a standard 48-pitch drivetrain system. However, you'll need to verify that your vehicle's transmission housing is designed for 48DP gears and that your spur gear is also 48DP. Most modern RC buggies, trucks, and racing vehicles use this standard, making this an excellent upgrade option for most serious hobbyists.
• Why choose aluminium over plastic pinion gears? — Aluminium pinion gears offer several advantages over plastic alternatives: they resist stripping and wear far better, maintain precise tooth profiles through hundreds of runs, provide better heat dissipation during intense racing sessions, and deliver a more responsive feel through the drivetrain. If you race regularly or bash hard, aluminium is the only choice for long-term reliability and performance.
• How often will I need to replace this pinion gear? — With proper maintenance and regular cleaning, a quality 7075 aluminium pinion gear like this one can last for hundreds of runs. Unlike plastic gears that may require replacement after 20-30 sessions, this Fastrax pinion gear is designed to be a permanent part of your RC car UK setup. Obviously, extreme abuse or heavy collision damage can accelerate wear, but under normal racing and bashing conditions, you're looking at a component that will outlast several complete vehicle refreshes.
• Is this suitable for beginners? — While this is a quality component suitable for anyone, it's particularly attractive to intermediate and advanced RC racers who are replacing worn gears or upgrading to higher-quality drivetrain parts. Beginners might start with ready to run RC vehicles that come with standard gears, but once you're ready to optimise your setup, this pinion gear represents a worthwhile investment in reliability.
• What spur gear should I pair with the 21T pinion? — The gear ratio depends on your vehicle type and racing conditions. Common pairings include 48DP spur gears ranging from 50T to 85T depending on whether you want higher acceleration or top-end speed. We recommend consulting your vehicle's manual or speaking with our RC experts at RC Model Shop to ensure you choose the optimal ratio for your specific needs.
• Does this pinion gear need special maintenance? — Basic maintenance is straightforward: keep it clean after runs, ensure it meshes properly with your spur gear, and check for any signs of damage before each session. The 7075 aluminium construction requires no special treatment beyond what you'd do for any quality RC component – simply keep it dry and free from dirt and debris.

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 21T ALUMINIUM 7075 PINION GEAR FAST48-21 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.