Fastrax Losi Micro-B Aluminium Lower Front Suspension Arms Pair FTLS04BK

Overview

Transform your Losi Micro-B RC car with the Fastrax Losi Micro-B Aluminium Lower Front Suspension Arms, the ultimate upgrade for serious RC enthusiasts across the UK. Whether you're a competitive racer, weekend basher, or dedicated collector, these precision-engineered suspension arms deliver the performance and durability your Micro-B demands. As one of the most popular ready-to-run RC models in the UK, the Losi Micro-B benefits tremendously from quality aftermarket upgrades, and these aluminium lower front suspension arms represent exactly the kind of hop-up parts that separate champion setups from standard builds.

Manufactured by Fastrax, a brand renowned for producing high-quality option parts and accessories for RC cars across all scales, these suspension arms are engineered to replace the stock components on your Losi Micro-B. The use of aluminium construction provides several critical advantages over the factory plastic parts, including superior rigidity, better response to steering inputs, and dramatically improved longevity during aggressive driving sessions. If you're looking to upgrade your RC car UK setup with reliable, proven components, these arms represent an investment in your vehicle's performance and lifespan.

Available as a pair to cover both sides of your vehicle's front suspension, these arms are ready to bolt straight onto your Micro-B chassis. They're compatible with the complete Losi Micro-B platform, making them an essential addition to any tune-up programme. Whether you're preparing for competition or simply want your brushless RC buggy to handle like a precision instrument, the Fastrax aluminium suspension arms deliver measurable improvements in steering response, cornering stability, and overall chassis control.

Key Features

• Premium Aluminium Construction — These suspension arms are manufactured from high-quality aluminium alloy, which is significantly stronger and more rigid than the factory plastic components. This material choice ensures the arms maintain their geometry under hard cornering and jumping, providing consistent handling characteristics lap after lap. Aluminium also offers superior vibration dampening compared to plastic, resulting in smoother, more predictable vehicle behaviour.
• Direct OEM Compatibility — Designed specifically for the Losi Micro-B platform, these arms fit perfectly into the existing suspension geometry without requiring modifications or additional adaptation parts. The mounting points align precisely with your chassis, ensuring proper suspension alignment and eliminating the guesswork from the installation process. This direct fitment means you can upgrade with confidence, knowing the parts have been engineered specifically for your vehicle.
• Pair Included — You receive both left and right lower front suspension arms in a single purchase, allowing you to upgrade your entire front suspension geometry in one go. This paired approach ensures consistent performance across both sides of the vehicle, which is critical for balanced handling. Many competitors offer only single arms, but Fastrax provides the complete package you need.
• Enhanced Steering Response — The rigidity of aluminium construction reduces flex and deflection during cornering, translating to more immediate steering inputs and better driver feedback. This improvement is particularly noticeable during high-speed turns and technical course sections where precision matters. Your RC car UK setup will feel noticeably more connected to the driver's inputs once these arms are installed.
• Proven Durability — Aluminium arms withstand the punishment of aggressive driving, jumping, and hard impacts far better than plastic alternatives. Where plastic arms might crack or bend permanently after hard landings or collisions, these aluminium arms spring back to their original geometry, allowing your vehicle to maintain perfect suspension alignment through extended driving sessions.
• Competitive Upgrade Path — These arms are part of Fastrax's comprehensive upgrade system for the Micro-B, allowing you to progressively improve your vehicle's performance. Many competitive racers use Fastrax options parts as their foundation for championship-winning setups, making this the choice of serious competitors across the UK and beyond.
• Professional Finish — The arms feature clean, precision machining with smooth edges and consistent tolerances throughout. The professional appearance reflects the quality engineering inside, and these parts will look at home on any serious RC setup. The anodised aluminium finish resists corrosion and maintains its appearance through countless driving sessions.

Technical Performance

The Fastrax Losi Micro-B Aluminium Lower Front Suspension Arms represent a significant engineering upgrade over factory plastic components. Constructed from high-grade aluminium alloy, these suspension arms provide superior stiffness and durability whilst maintaining the precise geometry required for optimal handling on the Micro-B platform. The suspension geometry on the Micro-B is critical to its performance characteristics, and any flex in the suspension arm can lead to inconsistent tracking and unpredictable handling. By upgrading to rigid aluminium arms, you eliminate this variable and ensure your vehicle maintains perfect suspension geometry through every corner, jump, and acceleration phase. The material choice also provides better heat dissipation than plastic, which can become important during extended driving sessions or high-performance racing. The arms have been engineered to exact specifications to ensure they integrate seamlessly with your existing Micro-B chassis and suspension system. Installation is straightforward, requiring only basic tools and minimal technical knowledge, making this upgrade accessible to intermediate RC enthusiasts. The transition from stock plastic to aluminium suspension arms is immediately noticeable in how the vehicle responds to steering inputs and maintains line through technical sections of track or course. For anyone serious about getting maximum performance from their brushless RC buggy, this upgrade is considered essential by competitive racers and serious hobbyists throughout the United Kingdom.

What's in the Box

• Fastrax Losi Micro-B Aluminium Lower Front Suspension Arms pair (left and right)

What You Need to Complete

• Your existing Losi Micro-B RC vehicle
• Basic RC tool set including hex wrenches and screwdrivers
• Optional: Loctite threadlocker for securing fasteners

Frequently Asked Questions

• Will these aluminium suspension arms fit my Losi Micro-B directly? — Yes, these arms are engineered specifically for the Losi Micro-B platform and mount directly to your existing chassis without any modifications. The mounting points align perfectly with your vehicle's suspension geometry, ensuring proper alignment and immediate compatibility.
• What is the advantage of aluminium suspension arms over the factory plastic parts? — Aluminium provides significantly greater rigidity, which eliminates flex during hard cornering and jumping. This translates to more consistent handling, better steering response, and improved durability. Whilst plastic arms can bend or crack under impact, aluminium arms maintain their geometry through aggressive driving and return to their original shape after impacts, keeping your suspension properly aligned.
• Are these arms suitable for racing or just general RC car UK hobby use? — These arms are suitable for both competitive racing and recreational bashing. Many serious racers use Fastrax option parts as the foundation of their championship-winning setups. The upgrade from plastic to aluminium is particularly valuable for racing, where consistency and responsiveness directly impact lap times and race results.
• How difficult is installation of these suspension arms? — Installation is straightforward and requires only basic RC tools such as hex wrenches and screwdrivers. Most users can complete the upgrade in 15-30 minutes per side. Detailed installation instructions should be referenced to ensure proper mounting and alignment. The arms bolt directly to your existing chassis, making the process accessible to intermediate RC enthusiasts.
• Will upgrading to these arms improve my lap times? — Yes, the improved steering response, reduced suspension flex, and enhanced cornering stability provided by aluminium arms can result in measurable improvements in lap times and overall performance. The vehicle will feel more connected to driver inputs, allowing you to drive more precisely through technical sections. Many competitors report noticeably improved performance after this upgrade.
• Are these arms available as a complete pair? — Yes, you receive both the left and right lower front suspension arms in this package. This ensures consistent performance across both sides of your vehicle and eliminates the need to purchase multiple items. The paired approach is more economical than buying single arms separately.
• What maintenance do these aluminium arms require? — Aluminium arms require minimal maintenance beyond standard RC vehicle care. Simply rinse with fresh water after muddy or wet driving, allow to dry completely, and inspect periodically for any damage. The anodised aluminium finish provides corrosion resistance, so special treatments are unnecessary for most users.
• Can I use these arms with other Losi models or is it Micro-B specific? — These arms are specifically engineered for the Losi Micro-B platform. Whilst Fastrax produces aluminium suspension arms for many other Losi models including various scales and platforms, you must ensure you purchase the correct model number for your vehicle. Using arms designed for a different Losi model could result in poor fitment and handling problems.

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 FRONT SUSPENSION ARMS 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.