Overview
The ARRMA Rear Diffuser Set Z-ARA320518 is an essential replacement and upgrade component for ARRMA Infraction 6S BLX and ARRMA Limitless 8S AVC models. Whether you're a dedicated RC car UK enthusiast looking to maintain your high-performance machine or someone seeking to customise the appearance of your brushless RC vehicle, this rear diffuser set offers both protective functionality and aesthetic versatility. The rear diffuser is a critical aerodynamic component that not only enhances the visual appeal of your ready-to-run RC car but also provides structural protection to the rear end of your chassis during intense bashing sessions and competitive racing.
This comprehensive diffuser set is engineered for serious RC hobbyists who demand quality replacement parts that match the precision and durability of their ARRMA platform. If you've damaged your original rear diffuser during aggressive driving, or if you simply want to transform the look of your Infraction or Limitless, this modular system delivers multiple styling options in a single package. The set includes five different insert styles, allowing you to experiment with different visual configurations without purchasing multiple separate components.
ARRMA is renowned in the RC community for producing high-performance electric RC buggies, trucks and cars that push the boundaries of speed and durability. This genuine ARRMA spare part ensures compatibility and quality assurance for your investment in a premium RC model.
Key Features
- Tough Composite Material Construction — The rear diffuser is manufactured from high-quality composite material that provides long-lasting vehicle protection and significantly increases impact resistance, meaning your RC model can withstand the rigours of off-road bashing, track racing, and street driving without the rear end sustaining damage from collisions or rough terrain.
- Five Interchangeable Insert Styles — The package includes five completely different style insert parts (Rain Light, Mount, Fin, Gearbox, and Flat designs), giving you exceptional customisation capability to alter the appearance and aesthetic of your ARRMA vehicle as frequently as you wish without needing to purchase additional components.
- Precision Molded Construction — Each component is precision molded, which guarantees perfect fitment to your vehicle and allows for quick and easy maintenance, meaning replacement and customisation tasks can be completed without complex tools or lengthy installation procedures.
- OEM Replacement Capability — This set provides replacement parts for kit-supplied items, making it the perfect choice when your original diffuser becomes worn, damaged, or when you want to upgrade from the standard configuration that came with your ready-to-run RC model.
- Universal Compatibility Across Models — The diffuser is specifically engineered to fit ARRMA Infraction 6S BLX models (both Blue and Silver variants) and ARRMA Limitless 8S AVC models (Street Speed Red/Black and White/Blue variants), ensuring seamless integration with multiple popular ARRMA platforms.
Technical Performance
The ARRMA Rear Diffuser Set Z-ARA320518 exemplifies the engineering excellence that defines ARRMA's approach to RC vehicle components. Manufactured from tough composite material, this diffuser combines structural integrity with lightweight characteristics that preserve the handling dynamics of your brushless RC car. The precision molded construction ensures that each component maintains exact dimensional tolerances, allowing the diffuser and its five insert options to fit seamlessly onto compatible Infraction 6S BLX and Limitless 8S AVC chassis platforms. The composite material specification delivers enhanced impact resistance compared to standard plastic alternatives, which is crucial when operating high-performance electric RC models that frequently encounter obstacles, jumps, and aggressive contact during street bashing or track racing. The modular insert system represents thoughtful design engineering—rather than selling five separate complete diffusers, ARRMA provides a single diffuser body with five swappable inserts, reducing waste and offering tremendous value. Whether you opt for the aggressive Fin Style insert, the functional Gearbox Style insert, the minimalist Flat Style insert, the distinctive Rain Light Style insert, or the practical Mount Style insert, the underlying diffuser structure remains consistent, maintaining aerodynamic and protective properties across all configurations.
What's in the Box
- 1 x Rear Diffuser
- 1 x Rain Light Style Insert
- 1 x Mount Style Insert
- 1 x Fin Style Insert
- 1 x Gearbox Style Insert
- 1 x Flat Style Insert
Frequently Asked Questions
- Is the ARRMA Rear Diffuser Set compatible with my RC model? — Yes, but only if you own an ARRMA Infraction 6S BLX (available in Blue C-ARA7615V2T1 or Silver C-ARA7615V2T2) or an ARRMA Limitless 8S AVC 4X4 RTR BLX Street Speed model (available in Red/Black C-ARA7816T1 or White/Blue C-ARA7816T2). If you operate a different ARRMA platform or vehicle from another manufacturer, this specific diffuser set will not be compatible. Always verify your exact model number before purchasing replacement parts for your ready-to-run RC car.
- What are the different insert styles and how do they differ? — The set provides five distinct insert options: the Rain Light Style Insert features an aerodynamic design reminiscent of rain gutters, the Mount Style Insert offers a functional aesthetic with visible mounting points, the Fin Style Insert includes aggressive vertical fins for a competition-focused appearance, the Gearbox Style Insert showcases a mechanical design inspired by exposed drivetrain components, and the Flat Style Insert provides a clean, minimalist look. Each insert attaches to the same base diffuser body, allowing you to swap styles according to your preference or driving conditions without replacing the entire component.
- Will this diffuser improve the performance of my RC car? — The rear diffuser primarily provides structural protection to the rear end of your chassis and contributes to the aerodynamic balance of your vehicle. While it won't directly increase speed or acceleration like a motor upgrade would, it does protect critical components from damage during aggressive driving, and the aerodynamic properties help maintain stability and handling at high speeds. For serious RC enthusiasts, the protective function is invaluable when operating fast brushless RC models on challenging terrain.
- How do I install the different insert styles? — The ARRMA Rear Diffuser Set is engineered with precision molding to ensure that all five insert styles attach to the main diffuser body with simplicity. Swapping between different inserts requires no complex tools—you can change the aesthetic of your RC vehicle in moments. This user-friendly design means even beginners can customise their ready-to-run RC model without requiring advanced mechanical knowledge or lengthy installation procedures.
- What happens if I damage my original rear diffuser? — This is precisely why ARRMA manufactures replacement diffuser sets. If your original diffuser becomes cracked, broken, or worn during enthusiastic bashing or racing, you can simply replace it with this Z-ARA320518 set rather than purchasing an entirely new vehicle or dealing with compromised protection. As genuine ARRMA spare parts, these components maintain the same quality standards as your original equipment.
- Can I use just one insert style, or must I use all five? — You can absolutely choose to use just one insert style. The set is provided with five options to offer maximum customisation flexibility, but you're under no obligation to utilise all five. Many RC enthusiasts select their preferred style and store the remaining inserts as spares or experiment with different configurations depending on driving conditions or personal preference on different days.
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. 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 Rear Diffuser Set Z-ARA320518 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction.
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.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
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- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- 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.
