Fastrax Losi Micro-B Aluminium Lower Rear Suspension Arms Pair FTLS05BK

Overview

The Fastrax Losi Micro-B Aluminium Lower Rear Suspension Arms are precision-engineered replacement parts designed for serious RC enthusiasts and competitive racers in the UK who demand the highest quality upgrades for their small-scale RC buggies. These aluminium suspension arms represent a significant step up from standard plastic components, offering superior durability, rigidity and performance characteristics that make them essential for anyone looking to maximise the potential of their Losi Micro-B 2WD buggy or compatible stadium truck platform. Whether you're a weekend basher pushing your RC car to its limits or a dedicated racer preparing for competition, these suspension arms deliver the consistency and reliability you need to stay ahead of the competition.

Built from high-grade aluminium alloy, these lower rear suspension arms provide the kind of structural integrity that serious RC racing demands. The material choice is not arbitrary—aluminium offers the perfect balance between weight savings and rigidity, ensuring that your suspension geometry remains consistent through hard cornering, acceleration and braking. This consistency translates directly into more predictable handling characteristics, better traction and improved overall performance on both loose and grippy surfaces. For RC car UK enthusiasts looking to upgrade their Losi platform, these arms represent an investment in reliability and performance that will pay dividends every time you take your buggy to the track or the bash spot.

These suspension arms are manufactured to the exacting standards you'd expect from Fastrax, a brand recognised throughout the RC hobby for producing aftermarket parts that genuinely improve vehicle performance. The lower rear suspension arms play a critical role in how your RC buggy handles and responds to track conditions, making them one of the most important tuning upgrades available for the Micro-B platform.

Key Features

• Premium Aluminium Construction — The suspension arms are manufactured from high-grade aluminium alloy rather than plastic, providing dramatically improved rigidity and durability that withstands the stresses and impacts of competitive RC racing without flex or deformation.
• Lower Rear Suspension Positioning — These arms specifically control the rear suspension geometry of your Losi Micro-B buggy, delivering critical tuning benefits that influence cornering speed, traction, braking stability and overall handling response characteristics.
• Direct OEM Compatibility — Engineered to fit Losi 1/24 Micro-B 2WD buggies and Losi 1/28 Micro-T 2WD stadium trucks, ensuring perfect fitment without modification or adaptation, allowing you to upgrade with complete confidence.
• Pair Configuration — The suspension arms are supplied as a matched pair, so you can upgrade both sides of the rear suspension simultaneously for balanced, symmetrical handling characteristics and predictable performance.
• Lightweight Design — Aluminium's inherent weight advantages mean these suspension arms reduce unsprung mass compared to plastic alternatives, improving suspension response and overall vehicle dynamics without compromising structural strength.
• Enhanced Durability — The superior material strength of aluminium means the arms resist cracking, breaking and stress fractures far better than standard plastic components, extending the lifespan of your suspension system and reducing replacement frequency.
• Improved Suspension Consistency — The rigidity of aluminium ensures that suspension geometry remains stable and consistent throughout hard driving sessions, delivering predictable handling that allows you to refine your driving technique and explore your car's full potential.
• Competitive Racing Ready — These parts meet the exacting demands of competitive RC racing, making them the choice of serious racers and tuning enthusiasts who refuse to compromise on component quality.

Technical Performance

The Fastrax Losi Micro-B Aluminium Lower Rear Suspension Arms represent a fundamental upgrade to your small-scale RC buggy's chassis dynamics. The transition from plastic to aluminium suspension components dramatically alters how your vehicle responds to track inputs and maintains consistent suspension geometry under load. Aluminium's superior material properties—including higher tensile strength, improved rigidity and better impact resistance—directly translate into suspension arms that maintain their designed geometry through aggressive cornering, high-speed acceleration and hard braking events. The lower rear suspension arms are responsible for controlling the trailing geometry of the rear axle, influencing critical performance parameters including anti-squat characteristics, rear-end traction and overall stability. In competitive RC racing environments, even microscopic variations in suspension geometry can determine whether you finish first or miss the podium, making the precision and consistency of these aluminium arms invaluable. The arms are engineered to work seamlessly with the existing Losi Micro-B platform, maintaining proper suspension kinematics and ride height whilst providing the enhanced durability that only quality aluminium construction can deliver. Whether you're running your Losi 1/24 Micro-B 2WD buggy RTR configuration or campaigning a Losi 1/28 Micro-T 2WD stadium truck, these suspension arms provide the structural integrity and performance consistency needed to extract maximum performance from your chassis. The lightweight construction ensures minimal impact on your vehicle's overall weight distribution, whilst the rigid construction guarantees that suspension tuning changes will produce consistent, measurable differences in handling characteristics. This is the kind of upgrade that separates casual RC car UK enthusiasts from serious competitors: not flashy or visually dramatic, but delivering genuine, measurable improvements in every aspect of suspension performance.

What's in the Box

• Fastrax Losi Micro-B Aluminium Lower Rear Suspension Arms (pair)

Frequently Asked Questions

• Which Losi models are compatible with these suspension arms? — These Fastrax aluminium lower rear suspension arms are specifically engineered for the Losi 1/24 Micro-B 2WD Buggy RTR (available in white or silver finish) and the Losi 1/28 Micro-T 2WD RTR Stadium Truck (also available in white or silver). Before purchasing, verify your buggy's exact model code to ensure compatibility, as these arms are rear-specific and will not fit other suspension positions.
• Why should I upgrade from plastic to aluminium suspension arms? — Plastic suspension arms flex and deform under the stresses of competitive racing, causing suspension geometry to change and handling to become unpredictable. Aluminium arms maintain their designed geometry throughout your driving session, delivering consistent performance that allows you to develop confidence in your RC car's behaviour and refine your driving technique accordingly. The improved durability means fewer breakages and replacement costs over time.
• Are these arms difficult to install? — These suspension arms are direct replacements designed for straightforward installation on compatible Losi models. You will need basic hex wrenches and familiarity with your Losi's suspension layout. If you're unfamiliar with RC suspension work, our experienced team at RC Model Shop can advise you on the installation process—visit us in Walsall or contact our customer service team for guidance.
• Will these arms improve my Losi Micro-B's speed? — Whilst aluminium suspension arms don't directly increase motor power, they do improve traction consistency and suspension response, which can result in measurably faster lap times through better corner exit acceleration and more stable high-speed running. The performance gain comes from improved chassis control rather than added power.
• Can I mix and match aluminium and plastic suspension arms? — Whilst technically possible, mixing aluminium and plastic arms can lead to asymmetrical handling characteristics because the components flex differently under load. For best results, upgrade all four suspension arm positions to aluminium for balanced, predictable handling throughout your entire vehicle.
• What is the Fastrax brand reputation in RC racing? — Fastrax is a recognised manufacturer of premium aftermarket RC parts, known throughout the hobby for engineering quality components that genuinely improve vehicle performance. These suspension arms exemplify Fastrax's commitment to material quality and precision engineering that competitive racers depend 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. 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 LOSI MICRO-B ALUMINIUM LOWER REAR SUSPENSION ARMS (P FTLS05BK 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.