- Part Number: Z-ARA390299
- Manufacturer: ARRMA
- Product Type: Motor Heatsink
- Motor Size: 40mm diameter
- Material: Aluminium
- Finish: Black anodised
- Design: Multi-fin heatsink
- Fan Mounting: Compatible with 35mm fans
- Included Components: 1 x Motor Heatsink 40mm diameter, 1 x Motor Heatsink Clip
- Optional Accessories: ARA390300 Fan Set recommended for active cooling
- Compatible Models: C-ARA7617V2T2 Arrma Felony 6S BLX Orange, C-ARA7617V2T1 Arrma Felony 6S BLX Black, C-ARA7615V2T2 Arrma Infraction 6S BLX Silver, C-ARA7615V2T1 Arrma Infraction 6S BLX Blue, C-ARA7116V2 Arrma 1/7 Limitless V2 Speed Bash Roller, C-ARA8606V5 Arrma Typhon 6S V5 BLX, C-ARA8406 Arrma 1/8 TLR Tuned TYPHON 6S 4WD BLX Buggy RTR Red/Blue
- EAN: 5052127039055
Overview
The ARRMA Motor Heatsink 4074 is an essential upgrade for enthusiasts who demand peak performance from their RC cars and trucks. Designed for 40mm diameter motors, this precision-engineered aluminium heatsink keeps your motor running cool even during the most intense bashing sessions. Whether you're tearing through the track in your RC buggy, pushing your RC monster truck to its limits, or enjoying weekend RC car racing, motor temperature management is critical for performance and longevity. This heatsink represents ARRMA's commitment to helping RC enthusiasts in the UK maintain their vehicles in peak condition.
Motor heatsinks are an often-overlooked but highly effective performance accessory that can dramatically extend motor life and maintain consistent power delivery. When your brushless motor is working hard, heat buildup can reduce efficiency and cause performance degradation. By dissipating heat effectively, the ARRMA Motor Heatsink 4074 ensures your motor stays cooler for longer, allowing you to enjoy extended run times without throttle-back or thermal shutdown. This is particularly important for serious RC car UK racers and bashers who demand reliability and consistent performance.
ARRMA has engineered this heatsink with the precision manufacturing standards that RC enthusiasts expect, combining functional performance with aesthetic appeal. The black anodised finish with etched ARRMA branding looks professional and purposeful, whilst the lightweight aluminium construction ensures you're not adding unnecessary weight to your setup. Compatible with a range of ARRMA's most popular models, including the Felony 6S BLX, Infraction 6S BLX, and the 1/7 Limitless V2, this heatsink is a versatile addition to any RC collection.
Key Features
- Precision-manufactured construction — Each heatsink is manufactured to exact tolerances, ensuring a perfect fit on your 40mm diameter motor without any loose play or misalignment that could affect performance or aesthetics.
- High-quality lightweight aluminium — Aluminium construction provides excellent thermal conductivity to draw heat away from your motor whilst remaining light enough not to burden your RC vehicle with unnecessary weight that would affect acceleration and handling.
- Multi-fin design for maximum heat dissipation — The strategically designed fins significantly increase the surface area of the heatsink, allowing heat to dissipate more efficiently into the surrounding air and keeping your motor operating at optimal temperatures throughout extended driving sessions.
- Black anodised finish — The professional black anodised coating not only provides protection against corrosion and wear but also gives your RC setup a polished, finished appearance with the etched ARRMA logo adding authentic branding.
- Fan mounting capability — The flat area on the heatsink allows you to mount a 35mm fan for active cooling, dramatically improving heat dissipation during high-performance driving and competitive racing.
- Included heatsink clip — A purpose-designed clip is included to secure the heatsink firmly to your motor, ensuring it stays in place during the most aggressive driving and prevents vibration or movement that could compromise cooling efficiency.
- Compatible with ARRMA's leading RC models — Designed specifically for use with some of ARRMA's most popular 6S and racing-focused platforms, this heatsink is proven to work seamlessly with vehicles like the Felony 6S BLX, Infraction 6S BLX, Limitless V2, and Typhon 6S models.
Technical Performance
The ARRMA Motor Heatsink 4074 represents a focused approach to thermal management for high-performance RC vehicles. Engineered from premium lightweight aluminium, the heatsink utilises a multi-fin design that maximises surface area contact with air, enabling rapid heat transfer away from your 40mm diameter motor. The precision manufacturing ensures that the heatsink sits perfectly on your motor without gaps or misalignment, which would otherwise reduce cooling efficiency. The black anodised finish provides excellent durability and corrosion resistance, whilst the etched ARRMA logo adds visual authenticity. The inclusion of a dedicated heatsink clip means secure mounting is straightforward and reliable. For users seeking even more aggressive cooling performance, the flat mounting surface allows integration of a 35mm cooling fan, creating a more comprehensive thermal management system. This heatsink is particularly valuable for users running brushless motors in demanding applications such as competitive racing, high-speed bashing, or extended track sessions where maintaining consistent motor temperature directly correlates to performance and reliability.
What's in the Box
- 1 x Motor Heatsink 40mm diameter
- 1 x Motor Heatsink Clip
What You Need to Complete
- ARA390300 Fan Set (recommended for maximum cooling performance with active fan cooling)
Frequently Asked Questions
- Will the ARRMA Motor Heatsink 4074 fit my RC vehicle? — This heatsink is designed specifically for 40mm diameter motors. Check your current motor size before purchasing. It is compatible with ARRMA Felony 6S BLX, Infraction 6S BLX, Limitless V2, Typhon 6S V5 BLX, and other ARRMA models featuring 40mm diameter brushless motors. If you're unsure whether your RC car features a compatible motor, contact RC Model Shop's expert team for guidance.
- What is the benefit of a motor heatsink for my RC car? — Motor heatsinks significantly improve thermal management by increasing surface area and promoting heat dissipation away from your motor. This helps maintain consistent motor performance during extended driving sessions, prevents thermal shutdown in high-demand situations, extends motor lifespan by reducing thermal stress, and is particularly valuable for competitive racing and serious bashers who demand peak reliability.
- Can I use this heatsink with a cooling fan? — Yes, the flat area of the heatsink is specifically designed to allow mounting of a 35mm fan for active cooling. This combination creates a more comprehensive thermal management system, particularly useful for intensive racing, high-temperature environments, or extended driving sessions where passive cooling alone may be insufficient.
- Is the motor heatsink easy to install on my RC model? — Installation is straightforward. The heatsink is designed for 40mm diameter motors, and the included clip secures it firmly in place. Simply position the heatsink on your motor and secure it with the supplied clip. No specialised tools or advanced mechanical knowledge is required, making it an accessible upgrade for RC enthusiasts of all experience levels.
- Why is motor cooling important for RC racing in the UK? — Motor temperature management is critical for competitive RC racing. Cooler motors maintain consistent performance, avoid thermal throttling, deliver more reliable acceleration, and have extended operational lifespan. For serious RC car UK racers competing in events or pushing their vehicles hard during practice sessions, effective cooling can be the difference between winning and losing performance.
- Is this heatsink suitable for beginners? — Absolutely. Whilst the heatsink is popular with competitive racers, it's equally valuable for any RC enthusiast looking to improve motor longevity and performance. Installation requires no special skills, and the performance benefits are immediately noticeable, making it an excellent first upgrade for ready to run RC cars and trucks.
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 ARRMA Motor Heatsink 4074 Z-ARA390299 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.
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.
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- 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.
