Overview
The ARRMA Pivot Ball, CNC Aluminium (2) Z-ARA330651 is a premium suspension upgrade component designed specifically for high-performance RC vehicles. These precision-engineered pivot balls are part of ARRMA's EXtreme Bash (EXB) specification range, which means they are engineered to withstand the most demanding bashing sessions and competitive driving. Whether you're piloting an RC car in the UK or abroad, maintaining your suspension geometry is critical to consistent handling and steering response, and these CNC-machined pivot balls deliver exactly that.
If you own an ARRMA Kraton or Outcast 8S RC truck, you know that durability and precision are non-negotiable. These pivot balls are constructed from high-quality steel and precision-machined to exacting tolerances, ensuring they fit perfectly with your front hub assembly. The separate ball and shaft construction allows ARRMA's engineers to optimise the material properties of each section independently, resulting in a component that is stronger and more reliable than single-piece alternatives.
This is an essential upgrade for anyone serious about maximising their RC truck's performance and longevity. Whether you're a seasoned RC enthusiast in the UK looking to upgrade your brushless RC truck or a dedicated basher who wants their vehicle to withstand punishing terrain and impacts, these pivot balls are a worthwhile investment in your RC setup's durability and handling precision.
Key Features
- EXtreme Bash (EXB) Specification — These pivot balls are engineered and manufactured to ARRMA's demanding EXB standard, which means they are constructed from extremely strong and durable materials specifically designed to survive the most gruelling action, ensuring your suspension components won't fail during intense bashing sessions or competitive driving.
- Precision CNC Machining — Each pivot ball is precisely CNC machined to ensure an accurate fit to the front hub assembly of your vehicle, eliminating fitment issues and guaranteeing consistent performance across your RC truck's suspension geometry.
- Enhanced Strength and Stiffness — The CNC-machined construction adds significant strength and stiffness to your suspension, resisting bending and deformation under load, which ensures consistent steering and suspension geometry even during high-impact driving and aggressive manoeuvres.
- Separately Constructed Ball and Shaft Sections — Rather than using a single unified piece, ARRMA engineers the ball and shaft sections separately, allowing the materials for each section to be optimised individually; the ball prioritises smoothness whilst the shaft prioritises structural rigidity.
- Polished Ball Section for Smooth Action — The ball section is polished to a silky-smooth finish, eliminating slop and ensuring frictionless steering and suspension articulation, which translates to more responsive handling and better feedback from your RC truck's front end.
- Strong, Stiff Shaft Section — The shaft section is engineered for strength and stiffness to resist bending, preventing suspension geometry changes during hard cornering, landing from jumps, or high-speed straight-line runs, ensuring your vehicle handles predictably in all conditions.
Technical Performance
The ARRMA Pivot Ball Z-ARA330651 represents a significant step up in suspension component quality and engineering. Constructed from high-quality steel and finished to exacting CNC tolerances, these pivot balls are built to withstand the punishment that aggressive RC truck driving demands. The dual-section design philosophy—with a polished ball section and a rigid shaft section—allows ARRMA to optimise each component for its specific function. The polished ball minimises friction in the steering and suspension movement, reducing resistance and ensuring smooth, responsive handling feedback. Meanwhile, the stiff shaft resists the forces that would normally cause geometry changes, particularly important when landing jumps, cornering hard, or driving on rough terrain where suspension forces are at their highest. For UK RC enthusiasts running brushless 8S LiPo-powered trucks like the Kraton or Outcast, these upgrades are critical to maintaining consistent performance and durability under the extreme power outputs these vehicles produce. The precision CNC machining ensures that both pivot balls in this two-pack are identical, providing symmetrical suspension geometry for balanced handling characteristics.
What's in the Box
- 2 x EXB Pivot Ball CNC Machined Units
Frequently Asked Questions
- What RC vehicles are these ARRMA pivot balls compatible with? — These Z-ARA330651 pivot balls are specifically compatible with the ARRMA 1/5 Outcast 4X4 8S BLX EXB Brushless Stunt Truck RTR and other ARRMA models using the same front hub assembly design. Check your vehicle's documentation to confirm compatibility before purchasing.
- Why are CNC-machined pivot balls better than standard alternatives? — CNC machining ensures precision tolerances and consistent quality across every unit produced, eliminating slop and ensuring perfect fitment. The polished ball section reduces friction for smoother steering feel, whilst the engineered shaft section resists bending far better than single-piece components, maintaining suspension geometry under load and impact.
- Will these pivot balls improve my RC truck's handling? — Yes, by reducing slop in the suspension and steering, these pivot balls provide more responsive and consistent handling. The precision fit and polished surfaces mean your steering inputs are transmitted more directly to the wheels, whilst the stiff shaft section resists geometry changes that would otherwise make your truck's handling unpredictable.
- Are these pivot balls suitable for both racing and bashing? — Absolutely. The EXB specification makes these components suitable for the most demanding conditions, whether you're racing competitively or taking your RC truck on intense bashing adventures. The durable steel construction and precision engineering mean they will withstand both repeated high-speed impacts and the continuous stress of competitive driving.
- How do I install these pivot balls on my ARRMA truck? — These pivot balls are designed to fit the front hub assembly of compatible ARRMA vehicles. Installation typically involves removing the existing pivot balls and replacing them with these new CNC units. Consult your vehicle's manual for specific installation instructions, as procedures may vary depending on your exact ARRMA model.
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 Pivot Ball, CNC Aluminum (2) Z-ARA330651 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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- 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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- 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.
