This aluminum Motor Heatsink keeps your motor running cool when the action heats up.
Features
- Precision manufactured for a perfect fit
- Red anodized finish with etched ARRMA logo for cool looks
- Constructed from high-quality light-weight aluminum
- Multi-fin design increases surface area for efficient heat transfer
- Suitable for 380 sized motors
Includes
1 x Motor Heatsink
- Part Number: Z-ARA390308
- Manufacturer: ARRMA
- Product Type: Motor Heatsink
- Compatible Motor Size: 380-sized brushed motors
- Material: High-quality lightweight aluminium
- Finish: Red anodised with etched ARRMA logo
- Design: Multi-fin configuration for increased surface area
- Compatible Vehicles: ARRMA GRANITE GROM MEGA 380 Brushed 4X4 Monster Truck (all colour variants)
- Specific Compatible Models: C-ARA2102T1 (Blue/Red), C-ARA2102T3 (Green), C-ARA2102T2 (Red)
- Scale: 1/18
- Installation: Precision-manufactured for perfect fit, no modifications required
- Quantity Included: 1 x Motor Heatsink
- EAN: 5052127047388
Overview
Keep your RC motor running at optimal temperatures with the ARRMA GROM Motor Heatsink Z-ARA390308, a precision-engineered cooling solution designed specifically for 380-sized motors. Whether you're enjoying casual weekend bashing with your RC car UK or pushing your machine to its limits, motor temperature management is crucial for maintaining performance and extending component lifespan. This lightweight aluminium heatsink is the ideal accessory for any RC enthusiast looking to enhance their 1/18 scale GROM vehicle's reliability and longevity.
The ARRMA GROM Motor Heatsink is engineered for those who demand quality cooling without adding unnecessary weight to their ready to run RC setup. Compatible with the entire GRANITE GROM MEGA 380 Brushed 4X4 Monster Truck range, this cooling solution integrates seamlessly with your existing drivetrain. The distinctive red anodised finish with etched ARRMA logo ensures your RC monster truck looks as impressive as it performs, while the advanced multi-fin design maximises heat dissipation during intense driving sessions. For anyone serious about getting the best from their RC model, this heatsink is an essential upgrade.
Precision manufacturing ensures a perfect fit every time, meaning installation is straightforward and hassle-free. Whether you're a seasoned RC collector or new to the world of RC hobbies, adding this heatsink to your GROM demonstrates a commitment to proper maintenance and performance optimisation. The investment is minimal, but the benefits to your motor's longevity and reliability are substantial.
Key Features
- Precision Manufactured Design — Each heatsink is precision engineered to deliver a perfect fit on your 380-sized motor, eliminating guesswork during installation and ensuring optimal thermal contact for maximum cooling efficiency.
- Red Anodised Finish with Etched Logo — The vibrant red anodised coating not only provides excellent corrosion resistance and durability, but the etched ARRMA branding adds a professional, factory-quality appearance that complements any RC car setup perfectly.
- High-Quality Lightweight Aluminium Construction — Crafted from premium aluminium alloy, the heatsink delivers exceptional heat-conducting properties while remaining lightweight, ensuring it won't compromise your vehicle's acceleration, handling or overall performance characteristics.
- Advanced Multi-Fin Design — The carefully engineered fin structure dramatically increases the surface area available for heat transfer, allowing hot air to escape more efficiently and keeping your brushed motor running cooler during extended driving sessions and high-demand use.
- 380-Sized Motor Compatibility — Specifically designed and tested for 380 brushed motors, guaranteeing exact fitment and maximum thermal performance with these popular motor sizes commonly found in 1/18 scale RC vehicles.
- Easy Installation — The precision-fit design means mounting your new heatsink takes minutes, with no modification required to your existing GROM setup, making it an accessible upgrade for RC enthusiasts of all skill levels.
Technical Performance
The ARRMA GROM Motor Heatsink represents the pinnacle of efficient thermal management for 380-sized brushed motors found in 1/18 scale RC models. Built from high-quality aluminium alloy, the heatsink's engineering prioritises both performance and weight efficiency—critical considerations for maintaining your RC monster truck's handling characteristics and acceleration. The multi-fin design isn't simply aesthetic; each fin is strategically positioned to maximise surface area exposure to ambient air, allowing convective cooling to work at peak efficiency. During intensive driving sessions where motor temperatures can rise significantly, this heatsink actively pulls thermal energy away from your motor windings and transfers it to the surrounding environment. The red anodised finish serves dual purposes: it provides genuine protective corrosion resistance against moisture and debris exposure, whilst the etched ARRMA logo maintains the professional appearance your ready to run RC deserves. For users pushing their GRANITE GROM MEGA 380 Brushed 4X4 Monster Truck hard, temperature management directly translates to sustained performance, reduced brush wear, and extended motor life. This is engineering that matters in real-world RC use.
What's in the Box
- 1 x ARRMA GROM Motor Heatsink (380-sized motor fitment)
Frequently Asked Questions
- Which ARRMA GROM models is this heatsink compatible with? — The Z-ARA390308 heatsink is designed for the complete GRANITE GROM MEGA 380 Brushed 4X4 Monster Truck range, including the Blue/Red, Green, and Red colour variants. All three models feature 380-sized brushed motors that this heatsink is precision-engineered to cool.
- Will this heatsink improve my RC car's performance? — Whilst the heatsink doesn't increase motor power output, it significantly improves performance consistency by preventing thermal throttling. As your 380 motor heats up during aggressive driving, a cooler-running motor maintains more stable performance, better acceleration response, and improved reliability during long bashing sessions.
- Is the ARRMA GROM Motor Heatsink suitable for beginners? — Absolutely. Installation is straightforward thanks to the precision-engineered fit, requiring no modifications to your existing setup. Even if you're new to RC hobbies, mounting this cooling solution takes just minutes and requires only basic tools.
- How much does this heatsink weigh? — Manufactured from lightweight aluminium, the heatsink adds minimal weight to your RC vehicle. This ensures cooling performance is achieved without compromising the acceleration and handling characteristics that make the GROM such an enjoyable ready to run RC platform.
- What makes the multi-fin design important for cooling? — Traditional smooth heatsinks have limited surface area for heat dissipation. The ARRMA's multi-fin design exponentially increases the contact area exposed to moving air, allowing far more efficient heat transfer away from the motor windings, keeping temperatures lower during extended driving sessions.
- Can I use this heatsink on other RC brands' 380 motors? — Whilst the Z-ARA390308 is specifically precision-engineered for ARRMA GROM compatibility, the universal 380-motor fitment may work with other brands' similarly-sized motors. However, ARRMA officially recommends this product for verified GROM applications to guarantee perfect fitment and optimal performance.
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 GROM Motor Heatsink Z-ARA390308 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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