Overview
The Traxxas 21-T Pinion Gear (48-pitch) Set TRX2421 is an essential performance tuning component for RC car enthusiasts across the UK who demand precision engineering and reliable drivetrain components. Whether you're running a ready to run RC car or customising your existing brushless RC vehicle, this pinion gear allows you to fine-tune your gearing ratio to match your driving style, track conditions, and performance goals. Traxxas has built a reputation for manufacturing high-quality drivetrain components that withstand the demands of competitive racing and casual bashing alike, and this 48-pitch pinion gear is no exception.
Pinion gears are fundamental to any RC car's drivetrain system, directly affecting your vehicle's acceleration, top speed, and overall performance characteristics. By selecting the correct tooth count, you can optimise your RC model's performance whether you're looking for maximum acceleration or higher top-end speed. The 21-tooth configuration in this set provides an excellent balance for a wide range of driving conditions and vehicle types, making it suitable for both experienced RC competitors and enthusiasts looking to upgrade their setup. RC car UK enthusiasts have long trusted Traxxas components for their durability, precision manufacturing, and consistent performance on the track and off-road.
This pinion gear set comes equipped with a set screw fastening system, ensuring secure installation and preventing slippage during aggressive acceleration or high-speed cornering. The 3.2mm bore diameter is engineered to fit precisely onto standard RC motor shafts, providing a reliable connection that maintains consistency run after run. Whether you're upgrading from factory gears or replacing worn components, this Traxxas pinion gear represents a cost-effective way to maintain or enhance your RC car's performance.
Key Features
- 48-Pitch Precision Engineering — The 48-pitch specification ensures compatibility with other 48-pitch drivetrain components, allowing you to build a complete, cohesive gearing system that works in harmony with your other Traxxas parts and compatible components from other manufacturers.
- 21-Tooth Configuration — This tooth count has been specifically chosen to deliver balanced performance characteristics, offering a middle ground between acceleration and top speed that suits varied driving conditions without requiring constant changes.
- Set Screw Fastening System — The included set screw provides a secure, reliable method of attaching the pinion gear to your motor shaft, eliminating the risk of gear slippage during hard acceleration or extreme cornering forces.
- 3.2mm Bore Diameter — This bore size is engineered to fit standard RC motor shafts with precision tolerances, ensuring perfect concentricity and smooth power delivery with minimal vibration or wobble.
- OEM Traxxas Quality — Manufactured to the same exacting standards as all genuine Traxxas components, this pinion gear delivers the durability and reliability that RC enthusiasts expect from the brand, backed by decades of racing heritage.
- Performance Tuning Flexibility — Traxxas offers a wide selection of 48-pitch pinion gears in different tooth counts, allowing you to easily experiment with gearing ratios to dial in the perfect setup for your specific vehicle, track, and driving preferences.
Technical Performance
The Traxxas 21-T Pinion Gear represents precision engineering at its finest, manufactured from hardened steel to withstand the tremendous forces generated during acceleration, braking, and high-speed cornering. The 48-pitch specification is a universal standard in the RC hobby, ensuring compatibility with a vast range of spur gears and drivetrain components available through RC retailers across the UK. The 3.2mm bore diameter is machined to exacting tolerances, guaranteeing a perfect fit on standard motor shafts without play or looseness. The set screw fastening mechanism has been proven through countless hours of competitive racing and weekend bashing, providing secure retention even under extreme acceleration loads. This pinion gear will integrate seamlessly into brushless RC vehicles, delivering consistent power transfer from your motor to the drivetrain whilst maintaining the smooth, reliable operation that defines high-quality RC equipment. The hardened steel construction resists wear and maintains its tooth profile over extended periods of use, ensuring your RC car's performance remains consistent whether you're pushing hard in the first heat or the final championship run.
What's in the Box
- Traxxas 21-T Pinion Gear (48-pitch)
- Set Screw for secure motor shaft installation
Frequently Asked Questions
- What is a pinion gear and why do I need to change it on my RC car? — A pinion gear is the small gear mounted on your motor shaft that meshes with the larger spur gear in your RC car's transmission. By changing the pinion gear tooth count, you alter your vehicle's gear ratio, which directly affects acceleration and top speed. More teeth means faster top speed but slower acceleration, while fewer teeth means quicker acceleration but lower top speed. Selecting the right pinion gear allows you to optimise your RC car's performance for your specific driving style and track conditions.
- What does 48-pitch mean and how does it affect compatibility? — Pitch refers to the tooth spacing standard, with 48-pitch being one of the most common specifications in RC racing. This pitch specification determines which spur gears your pinion will mesh with correctly. The 48-pitch standard ensures compatibility with a wide range of Traxxas components and other manufacturer parts, making it easy to build and maintain your RC drivetrain system.
- How do I install the 21-T pinion gear on my RC motor? — Installation is straightforward: slide the pinion gear onto your motor shaft and align the set screw hole with a flat or notch on the shaft. Tighten the set screw firmly to secure the gear in place, ensuring it doesn't shift during operation. Make sure the pinion teeth mesh properly with your spur gear with appropriate clearance before running your vehicle.
- Will this 21-tooth pinion gear work with my existing brushless RC car? — The 21-tooth, 48-pitch specification is compatible with most brushless RC vehicles, provided your car uses 48-pitch drivetrain components. Check your vehicle's documentation or contact our RC Model Shop team to confirm compatibility with your specific model before purchasing.
- What's the difference between different pinion gear tooth counts? — Tooth count directly determines your gear ratio. A 21-tooth pinion is a mid-range option; lower tooth counts like 19 or 20 increase acceleration but reduce top speed, whilst higher counts like 22 or 23 increase top speed but reduce acceleration. Your choice depends on your track layout, driving style, and performance goals.
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 (48-pitch) Set TRX2421 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: TRX2421
- EAN: 0020334242105
- Gear Type: Pinion Gear
- Gear Pitch: 48-pitch (48dp)
- Number of Teeth: 21
- Bore Diameter: 3.2mm
- Fastening Method: Set Screw
- Material: Hardened Steel
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