VITAVON CNC Alu 7075 Rear Lower Arm For Arrma Kraton 8S Outcast 8S Silver - Vitavon VITARA330590

Overview

The VITAVON CNC Alu 7075 Rear Lower Arm for Arrma Kraton 8S and Outcast 8S represents a significant upgrade over standard factory suspension components. Designed and manufactured by Vitavon, a recognised specialist in high-performance RC upgrades, this rear lower arm is engineered for drivers who demand superior durability and reliability in their 1/8 scale brushless RC monster trucks. Whether you're a competitive racer pushing your Kraton 8S to its limits on the track, a weekend basher exploring challenging terrain, or an enthusiast looking to improve the longevity of your Outcast 8S, this aluminium suspension component is an essential upgrade that transforms how your truck handles impacts and maintains alignment under extreme conditions.

Built from premium 7075 aluminium alloy and precision-machined using CNC technology, this rear lower arm assembly delivers a level of strength and consistency that simply cannot be matched by the standard plastic components fitted to new trucks. The substantial weight of 460 grams (sold as a pair) reflects the robust engineering and superior material specification. This is not a lightweight cosmetic upgrade — it's a functional performance enhancement that directly improves suspension geometry maintenance, reduces deflection during hard landings, and extends the service life of your RC car substantially. For owners of the Arrma Kraton 8S (models ARA110002BT1 and ARA110002BT2) and Arrma Outcast 8S (models ARA5810B and ARA5210B), this upgrade has become something of a cult classic in the RC hobby community across the UK.

Installing the VITAVON rear lower arm is a straightforward modification that requires basic tools and mechanical knowledge. Once fitted, you'll immediately notice improved suspension response, better handling characteristics, and the peace of mind that comes from knowing your suspension geometry won't shift under braking, acceleration, or aggressive cornering. This is exactly the kind of upgrade that separates serious RC enthusiasts from casual users, and it's the reason why experienced drivers running their Kraton 8S and Outcast 8S at UK RC tracks and terrain parks choose Vitavon components.

Key Features

• 7075 Aluminium Alloy Construction — The use of aerospace-grade 7075 aluminium provides exceptional strength-to-weight ratio and superior stiffness compared to standard plastic arms, ensuring your suspension geometry remains true even during hard landings and aggressive driving on rough terrain.
• CNC Precision Machining — Each arm is manufactured using computer numerical control machining, guaranteeing consistent tolerances and perfect fitment to your Arrma chassis without any binding or excess play that could develop over time.
• OEM-Specific Design — This rear lower arm is engineered specifically for the Arrma Kraton 8S and Outcast 8S platforms, ensuring perfect compatibility with mounting points, suspension travel, and overall geometry without any modification required.
• Sold as a Complete Pair — You receive both left and right rear lower arms in this package, giving you a matched set that maintains identical suspension characteristics on both sides of your truck for balanced handling.
• Substantial Build Quality — At 460 grams for the pair, these arms employ sufficient material thickness to resist bending, cracking, and fatigue failure that commonly affect plastic components when exposed to repeated jumps and hard impacts.
• Direct Factory Replacement — These arms install in the exact same location and manner as factory components, making them a plug-and-play upgrade with zero modification to your chassis, frame, or other suspension parts.
• Enhanced Durability Under Extreme Conditions — The material science behind 7075 aluminium means these arms perform consistently in cold weather, maintain their properties when heated during extended driving sessions, and resist the degradation that plastic undergoes through repeated stress cycling.

Technical Performance

The VITAVON CNC Alu 7075 Rear Lower Arm represents a fundamental engineering upgrade to the suspension system of your Arrma Kraton 8S or Outcast 8S. These are professional-grade RC components manufactured to aerospace industry standards rather than consumer product specifications. The 7075-T73 aluminium alloy offers exceptional rigidity — approximately six times stiffer than the injection-moulded plastic arms found on stock trucks — which translates directly into superior suspension response and geometry consistency. When you brake hard from high speed, accelerate aggressively through tight corners, or land jumps at speed, the aluminium arms resist deflection and twisting that would cause plastic components to flex. This flexing, which might seem minor in isolation, accumulates over hundreds of jumps and impacts, gradually degrading your truck's handling and causing binding in the suspension system. The 460-gram weight for the matched pair reflects the use of substantial material thickness throughout the design, with carefully engineered sections that provide maximum strength where impacts occur while maintaining precision-fit mounting points where geometry matters most. CNC machining ensures that both the left and right arms are absolutely identical, eliminating any handling inconsistencies that can develop when using mismatched components. These rear lower arms maintain perfect suspension geometry throughout the full range of travel on both smooth racing surfaces and the rough, rocky terrain that characterises UK RC tracks and outdoor driving locations. The material choice also provides superior environmental resistance compared to plastic, maintaining performance through wet conditions, temperature extremes, and extended storage periods.

What's in the Box

• VITAVON CNC Alu 7075 Rear Lower Arm Pair (left and right assemblies)
• Matched set weighing 460 grams total

Frequently Asked Questions

• Are these rear lower arms compatible with both the Kraton 8S and Outcast 8S? — Yes, these VITAVON arms are specifically engineered for Arrma Kraton 8S models ARA110002BT1 and ARA110002BT2, as well as Arrma Outcast 8S models ARA5810B and ARA5210B. Ensure you have the correct model before ordering, as suspension geometry differs between Arrma product lines.
• Will this upgrade improve my truck's handling? — Absolutely. By eliminating the flex and geometry shift that occurs with plastic arms under load, these aluminium components maintain consistent suspension geometry throughout your driving sessions. You'll notice crisper steering response, more predictable cornering behaviour, and better stability during jumps and high-speed runs.
• Do I need any special tools to install these arms? — Installation requires only basic RC tools: a screwdriver set, hex key set, and a small vice or suspension tool to compress springs during removal and installation of the old components. No specialist equipment is needed, and experienced RC hobbyists can complete installation in under 30 minutes.
• How much weight do these add compared to stock plastic arms? — The matched pair weighs 460 grams. Stock plastic arms weigh significantly less, so you're adding noticeable mass to the rear suspension. This additional weight, combined with the superior stiffness, actually improves handling by reducing suspension pitch and improving overall truck stability, particularly when landing jumps.
• Will upgrading just the rear arms make a noticeable difference? — Yes, upgrading only the rear arms will deliver an immediate improvement in rear suspension geometry consistency and reduce geometry shift under acceleration and braking. Many drivers choose to start with rear arms before upgrading front components, as the rear suspension endures more stress during landing from jumps.
• Are these arms suitable for competitive racing? — These components are absolutely race-proven. They're favoured by serious competitors and weekend racers across UK RC racing venues because the consistent geometry translates directly into predictable handling that's essential for competitive driving.
• How do these compare to the stock Arrma suspension arms? — Stock Arrma arms are injection-moulded plastic and flex under load, particularly during high-impact landings. These VITAVON 7075 aluminium arms are approximately six times stiffer, maintain perfect geometry under extreme conditions, and resist the fatigue cracking that develops in plastic components over hundreds of jumps.
• Will this upgrade work with my current shocks and springs? — Yes, these rear lower arms use the same mounting points and attachment methods as factory components, so they're fully compatible with all standard Arrma suspension parts including shocks, springs, and anti-roll bars.

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 VITAVON CNC Alu 7075 Rear Lower Arm For Arrma Kraton 8S Outcast 8S Silver - Vitavon VITARA330590 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.