Overview
The RPM Mud Guards for RPM Kraton 8S Rear A-Arms are essential protective accessories designed specifically for serious RC enthusiasts running the ARRMA Kraton 8S monster truck. Whether you're a weekend basher enjoying your RC car UK setup or pushing your machine to the limits, these mud guards provide critical protection to your suspension and drivetrain components. The ARRMA Kraton 8S is a formidable 26 lbs (12kg) beast of a machine, and protecting your investment with quality aftermarket accessories ensures longer component lifespan and reduced maintenance between sessions.
These lightweight guards work exclusively with RPM #80812 rear A-arms, forming part of a comprehensive suspension upgrade package that transforms your Kraton 8S into a more durable, impact-resistant machine. If you're serious about keeping your brushless RC truck running smoothly and maintaining optimal performance, mud guards are a logical addition to your setup. They represent the kind of thoughtful engineering detail that separates casual hobbyists from dedicated RC enthusiasts who understand that protection equals longevity and reliability.
RPM has engineered these guards with the backyard basher and serious competitor in mind, using their trademark blend of ultra-durable materials to create protection you can trust. Made in the USA, RPM products have built a reputation for quality and durability across the entire RC hobby community, whether you're running ready to run RC vehicles or building custom competition setups.
Key Features
- Exclusive RPM A-Arm Compatibility — These mud guards are engineered specifically for RPM #80812 rear A-arms on the ARRMA Kraton 8S, ensuring perfect fitment and alignment without any modification or adjustment required. They are not designed to work with stock ARRMA A-arms or any other aftermarket alternatives, guaranteeing optimal protection and performance when paired with the correct suspension components.
- Sandblast Prevention for Shock Systems — The primary function of these guards is to prevent sandblasting of your rear shocks and shock shafts, which extends the working life of your shock absorbers significantly. By creating a barrier against dirt, sand and debris kicked up during aggressive driving, you'll spend less time maintaining shock seals and more time enjoying your RC truck.
- Drivetrain and Suspension Protection — Beyond shock protection, these mud guards keep debris away from your rear driveline and suspension components, ensuring they last longer and run much smoother between cleaning sessions. Your transmission, differential, and suspension linkages will suffer less wear from abrasive particles, translating to better performance and fewer repairs.
- Featherweight Construction — At just 18.5 grams per guard, weight penalty is virtually non-existent, meaning you get full protective benefits without compromising acceleration, handling or jump characteristics of your Kraton 8S. Lightness is critical in RC performance, and RPM has achieved maximum protection with minimal weight addition.
- Premium Engineering Polymer Material — Moulded from RPM's proprietary engineering blend of incredibly strong nylons, these guards deliver lifetime protection you can trust. The material absorbs impacts, resists UV damage, and maintains structural integrity through countless bashing sessions and jumps without cracking or degrading.
- Sold as Complete Pairs — Each order includes both rear mud guards, providing symmetrical protection across your entire rear suspension. This ensures balanced aerodynamics and consistent debris deflection on both sides of your machine.
Technical Performance
These mud guards represent thoughtful engineering focused on practical performance benefits rather than superficial features. The guards are constructed using RPM's trademark ultra-durable nylon blend, the same material science that has made RPM A-arms the choice of serious RC bashers worldwide. The dual-guard pairing ensures symmetrical protection across your rear suspension, and the featherweight specification of 18.5 grams per guard means you're adding negligible mass to your ARRMA Kraton 8S chassis. The engineering approach is straightforward but effective: create a physical barrier between wheel spray and critical drivetrain components, thereby extending service intervals and reducing maintenance requirements. The guards mount directly to RPM #80812 rear A-arms, utilising existing mounting points for streamlined installation. Their design doesn't interfere with suspension movement, allowing your shocks to articulate freely whilst still intercepting debris clouds. This is particularly important for serious RC car UK users who understand that suspension geometry and shock performance directly impact handling, landing impact absorption, and overall durability.
What's in the Box
- RPM Mud Guards for RPM Kraton 8S Rear A-Arms — pair of guards (two pieces total)
Frequently Asked Questions
- Do these mud guards fit my ARRMA Kraton 8S with stock A-arms? — No, these guards are engineered exclusively for RPM #80812 rear A-arms and are not compatible with stock ARRMA suspension components or any other aftermarket A-arm brands. You must upgrade to RPM #80812 rear A-arms to use these guards. This exclusive compatibility ensures perfect fitment and eliminates any guesswork or modification requirements.
- Will mud guards really help protect my shocks? — Yes, absolutely. By preventing direct sandblasting of your shock shafts and shock bodies, mud guards significantly reduce seal wear and corrosion caused by abrasive particles. This translates directly to longer shock lifespan, more consistent damping performance, and reduced maintenance. Your shock seals stay cleaner, meaning less frequent replacement and better performance consistency.
- Are mud guards suitable for beginners? — Yes, mud guards are an excellent addition regardless of experience level. Beginners benefit from extended component longevity and reduced maintenance, whilst experienced bashers appreciate the performance reliability during competitive sessions. Installation is straightforward on RPM A-arms, requiring only basic assembly knowledge.
- How much weight do these guards add? — Each guard weighs just 18.5 grams, totalling 37 grams for the pair. This is negligible in the context of a 26 lbs (12kg) Kraton 8S, representing less than 0.3% additional weight. The minimal mass penalty ensures no detectable impact on acceleration, top speed, or jump performance.
- Can I use these on other ARRMA models? — These guards are specifically engineered for RPM #80812 rear A-arms on the ARRMA Kraton 8S and compatible Outcast 8S models using ARRMA #330569 Spring Perches. They are not designed for EXB models or other ARRMA platforms. Always verify your specific A-arm model number before purchasing.
- What's the difference between mud guards and skid plates? — Mud guards specifically protect suspension and drivetrain components from debris and sandblasting, whilst skid plates provide chassis protection against rocks and impact. Both serve complementary protection purposes, and many serious RC users run both for comprehensive protection.
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 RPM Mud Guards for RPM Kraton 8s Rear A-Arms RPM80642 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.
- Brand: RPM R/C Products
- Model Number: RPM80642
- Product Type: Mud Guards for Rear A-Arms
- Compatibility: ARRMA Kraton 8S, ARRMA Outcast 8S
- Compatible With: RPM #80812 Rear A-Arms exclusively
- Not Compatible With: Stock ARRMA A-arms, other aftermarket A-arm brands, EXB models
- Weight per Guard: 18.5 grams
- Total Weight (Pair): 37 grams
- Quantity Included: 2 guards (pair)
- Material: Engineering blend of ultra-strong nylon
- Construction: Moulded high-strength polymer
- Primary Function: Prevent sandblasting of shocks and shock shafts
- Secondary Function: Protect rear driveline and suspension components from debris
- Benefit: Extend shock lifespan, reduce maintenance of shock seals, improve suspension longevity
- Manufacturing Origin: USA
- Installation: Mounts directly to RPM #80812 A-arms, no modification required
- Durability: Lifetime protection, UV resistant, impact resistant
- Version Notes: Works with Kraton 8S and Outcast 8S models using ARRMA #330569 Spring Perches only
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.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- 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.
