Overview
The Fastrax Arrma Mojave Aluminium Rear Upper Arms (PR) FTAR077BK are premium suspension components designed specifically for the Arrma 1/16 Mojave Grom 4x4 range of RC desert trucks. These replacement arms are an essential upgrade for any RC enthusiast looking to enhance their vehicle's suspension geometry, durability and performance on the track or off-road terrain. Whether you're an experienced RC competitor or a dedicated weekend basher, quality suspension components like these Fastrax arms are fundamental to achieving consistent handling and maximizing your RC vehicle's potential. Available as a pair (PR denotes pair), these rear upper arms represent an excellent investment for Mojave Grom owners across the UK who demand the best performance from their small-scale desert truck.
Manufactured by Fastrax, a recognised brand in the RC aftermarket industry, these aluminium rear upper arms offer superior strength compared to standard plastic components whilst maintaining precision engineering for optimal performance. The upgrade from factory parts to these dedicated Fastrax suspension arms can significantly improve your Arrma Mojave Grom's handling characteristics, particularly during aggressive cornering and high-speed desert truck runs. As a tune-up option specifically categorised under suspension upgrades, these arms are engineered to deliver the refinement that serious RC enthusiasts demand from their desert truck setup. Whether you're running a brushless or brushed variant of the Mojave Grom, these rear upper arms provide the structural integrity and performance enhancement needed to unlock your vehicle's full potential.
For UK-based RC car enthusiasts seeking reliable replacement or upgrade suspension components, the Fastrax Arrma Mojave Aluminium Rear Upper Arms represent excellent value and proven quality. These ready-to-fit arms integrate seamlessly with your existing Mojave Grom chassis and suspension geometry, making them an ideal choice for those looking to upgrade their RC car without major modifications. Stock is available, and ordering these suspension upgrades online is quick and straightforward, giving you fast access to the performance improvements your desert truck deserves.
Key Features
- Aluminium Construction — Machined from quality aluminium alloy, these rear upper arms provide significantly greater rigidity and durability compared to plastic factory parts, ensuring they can withstand the stresses of aggressive off-road driving whilst maintaining precise suspension geometry during high-speed desert truck action.
- Pair Supply — Supplied as a pair (PR), these arms provide a complete rear upper arm upgrade for your Mojave Grom, ensuring matched performance characteristics on both sides of your RC vehicle for balanced handling and predictable suspension behaviour.
- Arrma Mojave Grom Compatible — These arms are specifically engineered to fit the Arrma 1/16 Mojave Grom range, including all variants such as the Mojave Grom 223S BLX brushless and Mojave Grom MEGA 380 brushed models, ensuring perfect fitment and suspension geometry compatibility.
- Suspension Tune-Up Classification — Categorised as a suspension upgrade component, these arms represent a professional-level tune-up option for serious RC enthusiasts who want to improve their desert truck's handling, cornering response and overall driving experience.
- Direct Bolt-On Upgrade — These replacement arms are designed as drop-in replacements for your existing factory suspension arms, requiring no modification to your chassis or suspension mounts, making installation straightforward for anyone with basic RC car maintenance experience.
- Enhanced Performance Geometry — The precision aluminium construction maintains tight tolerances and consistent suspension geometry, essential for achieving predictable handling characteristics during competitive desert truck racing or recreational bashing.
Technical Performance
The Fastrax Arrma Mojave Aluminium Rear Upper Arms are engineered specifically for the demands of small-scale desert truck racing and recreational off-road RC driving. Manufactured from quality aluminium alloy, these suspension components deliver a significant strength-to-weight ratio improvement over factory plastic arms, allowing your Mojave Grom to handle more aggressive driving inputs without flex or geometry changes that would compromise handling. The precision machining ensures that suspension geometry remains consistent whether you're running a brushless BLX variant with higher performance outputs or the brushed MEGA 380 edition. These arms are compatible across the entire Arrma Mojave Grom 1/16 platform, including the Mojave Grom 223S BLX 4x4 DT available in both white and teal colour options, and the Mojave Grom MEGA 380 Brushed in red and blue. The arms also work with the 1/16 Arrma Mojave Grom 4x4 RTA Race Kit variant, making them suitable for both ready-to-run out-of-the-box vehicles and dedicated competition setups. The aluminium construction minimises deflection during cornering, maintaining your suspension's intended anti-roll characteristics and ensuring your RC desert truck maintains consistent performance whether you're pushing flat-out on groomed tracks or bashing through rougher terrain. For RC car UK enthusiasts seeking genuine performance upgrades backed by the proven Fastrax brand reputation, these rear upper arms deliver exceptional value and measurable suspension improvements.
What's in the Box
- Fastrax Arrma Mojave Aluminium Rear Upper Arms — pair (PR) of left and right arms
Frequently Asked Questions
- Will these Fastrax rear upper arms fit my Arrma Mojave Grom? — Yes, these arms are specifically designed as replacement and upgrade suspension components for the Arrma 1/16 Mojave Grom range. They are compatible with all variants including the Mojave Grom 223S BLX 4x4 DT (available in white and teal), the Mojave Grom MEGA 380 Brushed 4x4 (available in red and blue), and the 1/16 Arrma Mojave Grom 4x4 RTA Race Kit.
- Are these arms suitable for beginners? — These Fastrax aluminium rear upper arms are categorised as suspension tune-up options, making them ideal for RC enthusiasts who have basic maintenance skills and want to upgrade their vehicle's suspension performance. Whilst installation is straightforward for experienced RC car owners, beginners may benefit from consulting basic RC car maintenance guides or asking for assistance when first installing suspension upgrades.
- What is the difference between aluminium and plastic rear upper arms? — Aluminium arms provide superior rigidity and durability compared to plastic factory parts, offering better suspension geometry consistency during aggressive driving, improved cornering response, and greater longevity under the stresses of off-road racing and bashing. The aluminium construction resists flex that can compromise your RC desert truck's handling characteristics.
- Will upgrading to these arms improve my Mojave Grom's handling? — Yes, upgrading from factory plastic arms to these precision Fastrax aluminium suspension arms can deliver noticeable improvements in handling predictability, cornering response, and overall suspension geometry consistency. The reduced flex in aluminium construction helps maintain your tuned suspension settings throughout your driving session.
- What other suspension upgrades would complement these rear upper arms? — These rear upper arms work as part of a complete suspension system. Many RC enthusiasts also upgrade front upper arms, lower arms, and suspension mounts for a comprehensive geometry enhancement, creating a fully optimised suspension setup for their Mojave Grom.
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 ARRMA MOJAVE ALUMINIUM REAR UPPER ARMS (PR) FTAR077BK 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.
- Product Type: Suspension Upgrade — Rear Upper Arms
- Brand: Fastrax
- Model Number: FTAR077BK
- EAN: 5056135785409
- Supply Configuration: Pair (PR) — Left and Right arms included
- Material: Aluminium alloy
- Suspension Type: Rear upper suspension arms
- Compatible Vehicle Scale: 1/16
- Compatible With: Arrma 1/16 Mojave Grom range including Mojave Grom 223S BLX 4x4 DT (white variant C-ARA2304ST2), Mojave Grom 223S BLX 4x4 DT (teal variant C-ARA2304ST1), Mojave Grom 223S BLX 4x4 DT (black variant C-ARA2304T1), Arrma Mojave Grom MEGA 380 Brushed 4x4 (red variant C-ARA2104T1), Arrma Mojave Grom MEGA 380 Brushed 4x4 (blue variant C-ARA2104T2), Arrma 1/16 Mojave Grom 4x4 RTA Race Kit (C-ARA2104KT1)
- Vehicle Type: Small Scale Desert Truck
- Tune-Up Classification: Suspension
- Quantity: 2 arms (pair)
- Stock Status: In Stock
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.
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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.
