This strong Composite Chassis in short wheelbase configuration provides the perfect replacement part for your kit item.
Features
- Tough composite material for long-lasting durability during extreme RC action
- Precision manufactured for secure and reliable fit
- Extra material has been strategically added in high-stress areas to increase durability
- Integrated lower gearbox houses and lower suspension mounts
Includes
1 x Composite Chassis - SWB
Overview
The ARRMA Composite Chassis SWB Z-ARA320746 is a premium replacement chassis designed for RC enthusiasts across the UK who demand durability and precision from their spare parts. This short wheelbase chassis is engineered to provide the perfect upgrade or replacement for your ARRMA 1/18 monster truck, delivering the kind of robust performance you'd expect from ARRMA's commitment to quality RC vehicles. Whether you're a seasoned basher, a weekend racer, or someone just exploring the world of ready to run RC cars, a quality chassis is the foundation of a reliable machine that will handle extreme RC action without compromise.
Built from tough composite material, this chassis represents ARRMA's engineering philosophy: create parts that outlast the competition. The short wheelbase configuration makes this chassis ideal for tight handling and responsive cornering, giving your 1/18 monster truck the agility needed for obstacle courses, jumps, and high-speed runs. If you're looking to restore your RC monster truck to original specifications or upgrade with a proven spare part, the ARRMA Composite Chassis SWB is an excellent choice for UK-based RC enthusiasts seeking reliability without compromise.
This is not just another generic chassis replacement – it's a genuine ARRMA spare part manufactured to the same exacting standards as the vehicles they're designed for. Stock one in your spares box, and you'll have peace of mind knowing that if damage occurs, you have an authentic, precision-engineered replacement ready to get back into action.
Key Features
- Tough Composite Material — Constructed from high-quality composite material that provides exceptional durability during extreme RC action, ensuring your chassis can withstand the demands of aggressive driving, jumps, and crashes without cracking or breaking under pressure.
- Precision Manufacturing — Every chassis is precision manufactured to guarantee a secure and reliable fit with your ARRMA 1/18 monster truck, eliminating fitment issues and ensuring all mounting points align perfectly with your suspension and drivetrain components.
- Reinforced High-Stress Areas — Extra material has been strategically added in high-stress areas throughout the chassis design, providing additional durability exactly where your RC vehicle experiences the greatest impact and force during intense driving conditions and crashes.
- Integrated Lower Gearbox Housing — The chassis features integrated lower gearbox houses that keep all drivetrain components secure and protected, reducing the risk of damage and ensuring smooth power delivery from motor to wheels.
- Integrated Suspension Mounts — Lower suspension mounts are integrated directly into the chassis structure, providing a rigid, secure platform for your shocks and suspension geometry to work exactly as ARRMA engineered them for optimal handling and control.
- Short Wheelbase Configuration — The SWB (short wheelbase) design delivers agile handling characteristics, responsive cornering, and the kind of nimble performance that RC enthusiasts love for navigating tight courses and technical terrain.
Technical Performance
The ARRMA Composite Chassis SWB represents the pinnacle of spare parts engineering for the ARRMA 1/18 GRANITE GROM MEGA 380 brushed 4x4 monster truck platform. This chassis is manufactured using composite materials specifically chosen for their combination of weight efficiency and impact resistance – a critical balance in RC engineering. The precision manufacturing process ensures tolerances that allow for perfect alignment with your gearbox, suspension mounting points, and drivetrain geometry. By integrating the lower gearbox housing directly into the chassis structure, ARRMA eliminates flex and slop that could compromise performance. The strategic reinforcement of high-stress areas – typically found where suspension arms mount, where the gearbox connects, and along the centreline where impacts occur – extends the working life of the chassis significantly compared to thinner designs. This is the kind of engineering detail that separates genuine OEM spare parts from generic alternatives, and it's why choosing an authentic ARRMA chassis ensures your 1/18 monster truck performs as designed. Compatible with ARRMA 1/18 GRANITE GROM MEGA 380 models in all colour variants (Red, Blue/Red, and Green), this chassis maintains full compatibility with your existing drivetrain, suspension, and electronic components without modification.
What's in the Box
- 1 x Composite Chassis – SWB
Frequently Asked Questions
- Which ARRMA models is the Composite Chassis SWB Z-ARA320746 compatible with? — This chassis is specifically designed as a replacement part for the ARRMA 1/18 GRANITE GROM MEGA 380 Brushed 4x4 Monster Truck RTR in all colour options: Red (C-ARA2102T2), Blue/Red (C-ARA2102T1), and Green (C-ARA2102T3). It is an OEM ARRMA spare part engineered to provide perfect fitment with these models.
- Is this chassis suitable as an upgrade from the original? — Yes, this genuine ARRMA composite chassis can serve as both a direct replacement and an upgrade. Many RC enthusiasts keep a spare chassis on hand to minimise downtime, and the reinforced design with extra material in high-stress areas makes it an excellent insurance policy for serious bashers.
- What makes this composite material better than plastic? — Composite materials offer superior durability compared to standard plastic whilst maintaining a lighter weight than metal alternatives. The composite used in ARRMA chassis is specifically engineered to resist cracking and breaking under impact, a critical consideration for RC vehicles that encounter jumps, crashes, and aggressive driving conditions.
- Do I need to modify anything to fit this chassis to my GRANITE GROM? — No. This is an OEM spare part manufactured to original specifications with precision engineering that guarantees secure and reliable fitment. Simply remove your damaged chassis and install this replacement – all mounting points, suspension mounts, and gearbox housing will align perfectly with your existing components.
- What does short wheelbase mean for handling? — A short wheelbase (SWB) configuration delivers more agile, responsive handling with quicker cornering and easier manoeuvring in tight spaces. This makes the chassis ideal for obstacle courses, technical terrain, and close-quarters driving where a longer wheelbase would feel sluggish by comparison.
- Is this a genuine ARRMA part? — Yes. The ARRMA Composite Chassis SWB Z-ARA320746 is an authentic OEM spare part manufactured by ARRMA to the same exacting standards as the vehicles they're designed for, ensuring quality and compatibility you can rely on.
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 Composite Chassis SWB Z-ARA320746 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.
