Fastrax Round Finned Motor Heatsink for 540 550 Brushless RC Motors FAST36

Overview

The Fastrax Round Finned Motor Heatsink FAST36 is an essential cooling accessory for RC enthusiasts running brushless electric motors in their RC cars and trucks. Whether you're a dedicated racer, weekend basher, or someone exploring the world of RC hobbies in the UK, maintaining optimal motor temperatures is crucial for performance, reliability and longevity. This round finned heatsink is engineered to dissipate heat efficiently from your motor during extended running sessions, helping to prevent thermal throttling and potential motor damage that can occur when temperatures climb too high.

Designed with motorsport precision and manufactured by Fastrax—a recognised name in quality RC parts and accessories—this heatsink represents excellent value for money at just £4.99. It's the kind of upgrade that every serious RC car enthusiast should have in their spares box, offering straightforward installation and immediate thermal benefits. If you're running brushless motors in your 1/10 scale buggy, monster truck, stadium truck or any other RC vehicle platform, the FAST36 is a reliable, proven solution that will help keep your motor running cooler and performing at its best, lap after lap.

Available now in UK stock from RC Model Shop, this Fastrax motor heatsink pairs perfectly with upgrade projects and high-performance builds where heat management matters. It's compact, affordable, and delivers the kind of dependable engineering quality that keeps your RC car UK hobby investments protected from unnecessary thermal stress.

Key Features

• Round Finned Design — The distinctive round fin pattern maximises surface area exposure to air flow, allowing heat to dissipate more effectively than flat-sided alternatives, which is essential during sustained high-speed running or competition use.
• Lightweight Construction — Being a compact motor accessory, the heatsink adds minimal weight to your RC vehicle while delivering maximum cooling performance, helping to maintain your car's handling balance and responsiveness.
• Universal Compatibility — The FAST36 is designed as a general motor accessory that works across multiple RC platforms and motor sizes, making it a versatile addition to your spares collection that can be used across several of your RC cars.
• Simple Installation — This is a straightforward slip-on heatsink that requires no complex modification or specialist tools to fit, allowing you to upgrade your motor cooling in minutes without taking apart your entire RC vehicle.
• Proven Fastrax Quality — Fastrax is a trusted manufacturer of RC parts and accessories across the UK hobby scene, and this heatsink represents the same engineering standards and reliability you'd expect from the brand's complete product range.
• Affordable Thermal Management — At under £5, this heatsink offers exceptional value for money and is one of the most cost-effective ways to extend motor life and maintain consistent performance during intensive driving sessions.

Technical Performance

The Fastrax Round Finned Motor Heatsink FAST36 is engineered from aluminium, a material chosen specifically for its excellent thermal conductivity properties that allow heat generated by brushless motor windings to transfer away rapidly and dissipate into the surrounding air. The round finned construction creates multiple heat dissipation pathways, with each fin acting as an extended surface that increases the overall cooling area without significantly increasing the heatsink's physical footprint. This design philosophy means that as your motor generates heat during acceleration, cornering, and sustained full-throttle runs, the FAST36 works continuously to pull that thermal energy away from the motor body and reject it into the air, helping to maintain motor temperatures within the optimal operating window. This is particularly important for brushless motors used in competitive RC racing, high-speed bashing, or extended practice sessions where motor temperature can quickly climb beyond safe limits. The heatsink's compact dimensions and universal mounting approach make it compatible across a wide range of 540 and 550 size brushless motors commonly used in 1/10 scale off-road buggies, monster trucks, short course trucks and similar RC platforms popular throughout the UK.

What's in the Box

• Fastrax Round Finned Motor Heatsink FAST36 (single unit)

Frequently Asked Questions

• What size motors does the Fastrax FAST36 heatsink fit? — The FAST36 is designed for 540 and 550 size brushless motors, which are the standard motor sizes used in most 1/10 scale RC cars including buggies, monster trucks, and stadium trucks commonly available in the UK hobby market.
• How much difference will a motor heatsink make to my RC car's performance? — A motor heatsink helps prevent thermal throttling, which occurs when brushless motors automatically reduce power output as they overheat to protect internal components. By keeping motor temperatures lower, the FAST36 helps maintain consistent power delivery and top speed throughout your driving sessions, and extends the overall lifespan of your motor.
• Is the Fastrax FAST36 heatsink difficult to install? — No, installation is straightforward. The FAST36 is a slip-on heatsink that requires no tools or modifications to fit onto compatible brushless motors, making it one of the easiest RC upgrades you can perform without disassembling your vehicle.
• Will this heatsink work with my RTR ready-to-run RC car? — Yes, the FAST36 is designed as a universal motor accessory and can be retrofitted to most brushless RC cars, buggies and trucks equipped with 540 or 550 size motors, regardless of whether they're ready-to-run models or custom builds.
• What is the heatsink made from? — The FAST36 is manufactured from aluminium, a lightweight metal with excellent thermal conductivity properties that makes it ideal for efficiently dissipating heat generated by brushless motors during intense RC driving sessions.
• Do I need a heatsink for casual RC driving? — If you're running occasional casual sessions, a heatsink is beneficial but not absolutely essential. However, for competitive racing, high-speed bashing, extended driving sessions, or if you notice your motor getting hot to the touch, adding a heatsink like the FAST36 is a smart investment in motor protection and performance consistency.

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 Round Finned Motor Heatsink FAST36 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.