AS21690

Overview

The Team Associated AS21690 RC28R FT Aluminium Pinion Gear Set is an essential upgrade and spare component for RC car enthusiasts in the UK looking to fine-tune their drivetrain performance. This genuine Associated pinion set offers three different tooth count options—9T, 10T, and 11T—all machined to 64DP (64 pitch) specifications, allowing you to adjust your RC car's gearing to suit your driving style and track conditions. Whether you're a seasoned RC racer optimising your setup for competition or a dedicated hobbyist maintaining your RC car UK fleet, this aluminium pinion set provides the precision and consistency that genuine manufacturer components are known for.

Built from high-quality aluminium, the AS21690 pinion set is designed to be a reliable replacement for worn components or as an alternative gearing option when you need to experiment with different acceleration and top-end characteristics. By keeping your parts within the Team Associated ecosystem, you ensure compatibility and maintain the engineering integrity that makes Associated RC cars so popular among UK enthusiasts. This is the kind of upgrade that separates serious RC car UK drivers from casual users—the ability to fine-tune every aspect of your vehicle's performance.

Compatible with the RC28 Team and RC28R Team platforms, this pinion gear set is the practical choice when you need genuine spares or want to explore different gearing ratios without purchasing an entirely new drivetrain. For anyone maintaining or upgrading a Team Associated RC car, this aluminium pinion set represents excellent value and genuine manufacturer quality you can trust.

Key Features

• Three Pinion Options (9T, 10T, 11T) — This set includes three different tooth count pinions, giving you the flexibility to dial in your preferred acceleration characteristics and top-end speed without needing to purchase separate components for each ratio.
• 64DP Pitch Specification — The 64 pitch rating ensures precise mesh and compatibility with standard 64DP drivetrains found on Team Associated RC28 platform vehicles, maintaining the exacting tolerances that genuine Association components are engineered to.
• Aluminium Construction — Manufactured from aluminium rather than steel or plastic, these pinions offer an excellent balance of lightweight strength and durability, reducing rotating mass whilst maintaining the precision needed for consistent performance lap after lap.
• Genuine Associated Components — Being official Team Associated parts, these pinions are engineered to the same exacting standards as your RC car, ensuring perfect integration and reliable performance you can trust in competitive or casual driving.
• Precision Optimised Design — Each pinion is manufactured with precision in mind, delivering consistent tooth engagement and smooth power delivery to your drivetrain, which directly translates to predictable handling and repeatable lap times.
• Ideal for Gearing Experimentation — Whether you're adjusting for different track surfaces, weather conditions, or personal driving preferences, having three pinion options allows you to systematically explore which ratio works best for your setup without excessive investment.
• Simple Installation — As a direct replacement component for compatible 64DP drivetrains, installation is straightforward for anyone with basic RC car UK maintenance experience, making this accessible even if you're new to drivetrain adjustments.

Technical Performance

The Team Associated AS21690 pinion gear set represents genuine manufacturer engineering optimised for precision and consistency across all three included tooth counts. The 64DP specification ensures that these pinions mesh perfectly with standard 64DP drivetrains, maintaining the tight tolerances that differentiate genuine Associated components from aftermarket alternatives. By offering 9T, 10T, and 11T options, this set gives you meaningful performance adjustment capability—the 9T pinion will deliver more aggressive acceleration with slightly lower top-end speed, the 10T provides a balanced middle ground, and the 11T tilts the performance envelope towards maximum velocity at the expense of initial acceleration. The aluminium construction keeps rotating mass minimal, which is critical in RC car performance where every fraction of a second counts in competitive racing or high-performance driving. The precision manufacturing ensures that gear mesh is consistent and smooth, reducing noise and vibration whilst maximising power transmission efficiency. For RC car UK drivers who understand that drivetrain setup is fundamental to overall vehicle performance, this pinion set represents the kind of quality that separates casual basher components from serious racing equipment. Whether you're replacing a worn original pinion or exploring alternative ratios, these genuine Associated parts deliver the engineering integrity and performance consistency that makes Team Associated vehicles so competitive in the RC community.

What's in the Box

• 9T Aluminium Pinion Gear (64DP)
• 10T Aluminium Pinion Gear (64DP)
• 11T Aluminium Pinion Gear (64DP)

Frequently Asked Questions

• What is the difference between the 9T, 10T, and 11T pinions in this set? — The tooth count directly affects your RC car's gearing ratio. A lower tooth count (9T) delivers quicker acceleration but lower top speed, while a higher tooth count (11T) gives you more top-end speed with slightly softer acceleration. The 10T sits in the middle, providing a balanced setup. By including all three, you can experiment to find the ratio that works best for your driving style and track conditions without purchasing additional components.
• What does 64DP mean, and why does it matter? — DP stands for Diametral Pitch, and 64DP is a measurement of gear tooth fineness. It simply means these pinions are designed to mesh with 64DP spur gears on Team Associated RC28 platform vehicles. Using the correct pitch is essential—mixing pitches will result in poor mesh and drivetrain problems, so ensuring you have 64DP components is critical for reliable performance.
• Are these genuine Team Associated parts? — Yes, the AS21690 is an official Team Associated component manufactured to the same exacting standards as the rest of your RC car. Buying genuine manufacturer parts ensures perfect compatibility and engineering integrity, avoiding the compromise that sometimes comes with aftermarket alternatives.
• Will these pinions work with my RC28 or RC28R? — These are specifically designed for the RC28 Team and RC28R Team platforms, and the 64DP specification confirms compatibility with these models' drivetrain systems. Always verify your vehicle uses 64DP components before ordering, as other platforms may use different pitch specifications.
• How often should I replace my pinion gears? — Pinion replacement depends on usage. Competitive racers may rotate components more frequently, while casual drivers might get extended life. Inspect your pinion regularly for worn teeth or damage; if you notice striping, grinding, or uneven mesh, replacement is due. Having spare pinions on hand ensures you can quickly get back on the track.
• Do I need special tools to install these pinions? — Installation typically requires basic RC tools you likely already have—usually just a pinion tool or small wrench to remove the pinion gear nut and slide the old pinion off and new one on. Consult your vehicle's manual for specific installation instructions to ensure proper fitment and mesh alignment.

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 TEAM ASSOCIATED RC28R FT ALUMINIUM PINION GEAR SET 64DP 9/10/11T AS21690 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.