RPM Heavy-Duty Front and Rear A-Arms for Losi Micro-B Micro-T RPM72242

Overview

Are you tired of snapping stock A-arms on your Losi Micro-B or Micro-T? Step up to RPM Heavy-Duty A-arms and experience the durability upgrade your micro RC car has been waiting for. Whether you're a serious RC hobbyist in the UK looking to improve your micro buggy or stadium truck, or you simply want replacement arms that will withstand the punishment of regular bashing, these engineered-grade nylon A-arms deliver the strength and reliability that OEM parts simply cannot match. RPM's reputation for American-made quality makes these arms the go-to choice for RC enthusiasts who demand performance and longevity from their spares and tune-ups.

Designed specifically for the Losi 1/24 Micro-B 2WD Buggy and 1/28 Micro-T 2WD Stadium Truck, these heavy-duty front and rear arms are engineered for strength where it counts. Whether you're upgrading from factory-standard parts or replacing damaged arms, RPM's reinforced construction delivers the durability that serious RC car UK enthusiasts rely on. These are not basic replacement arms—they represent a significant engineering advancement over stock components, combining thicker hinge pin bosses, increased structural width, and advanced material science to create ultra-lightweight yet incredibly strong suspension components.

If you're running a ready-to-run RC buggy or stadium truck and want to reduce maintenance costs and downtime caused by broken A-arms, investing in this heavy-duty upgrade is one of the smartest modifications you can make. The result is a set of replacement A-arms that offers unmatched durability and performance, giving you confidence whether you're bashing in the garden, racing at your local club, or enjoying weekend RC adventures across the UK.

Key Features

• Thicker Inner and Outer Hinge Pin Bosses — The connection points where the A-arms pivot are substantially thicker than stock components, which significantly reduces stress concentration and dramatically improves resistance to cracking and breaking under lateral loads and impacts.
• Increased A-Arm Support Beam Width — The overall width of the A-arm support beams has been increased by approximately 20% compared to factory Losi parts, providing greater lateral stiffness and improved suspension geometry stability during aggressive driving and cornering.
• Triple Beam Construction on Front A-Arms — The front A-arms feature enhanced triple beam construction for maximised durability, distributing forces across multiple reinforcement paths rather than relying on single-point strength, which is particularly important in micro-scale RC vehicles where impact forces are concentrated on small components.
• Engineering-Grade Nylon Construction — Built from some of the highest-quality engineering-grade nylon materials available in the RC industry, these arms deliver exceptional strength-to-weight ratio without adding unnecessary bulk or weight to your suspension.
• Ultra-Lightweight Design — Despite their significantly reinforced construction, these A-arms maintain an ultra-lightweight profile that doesn't compromise your Micro-B or Micro-T's acceleration, handling, or battery runtime.
• Complete Front and Rear Package — This kit includes both front A-arms and both rear A-arms, providing a complete suspension upgrade solution so you can replace all four arms at once for consistent handling and performance.
• American-Made Quality — RPM's commitment to manufacturing excellence means you're investing in products designed and built with precision engineering standards and quality control that reflects decades of RC industry experience.
• Direct OEM Replacement — These arms directly replace the front and rear A-arms from stock Losi part number LOS-1768, ensuring perfect fitment on your Micro-B or Micro-T without requiring any modifications or additional adapter parts.

Technical Performance

These RPM Heavy-Duty A-arms represent a significant engineering advancement in micro-scale RC suspension components. The strengthening upgrades have been carefully engineered to address the specific failure points of stock Losi A-arms whilst maintaining the lightweight characteristics essential for optimal performance in 1/24 and 1/28 scale vehicles. The thicker hinge pin bosses work in concert with the 20% wider support beams to create a suspension system that resists the torsional and lateral forces generated during aggressive cornering, jumps, and high-speed running. The front triple beam construction adds an additional layer of impact resistance without significantly increasing weight, which is critical when maintaining the precise weight distribution required for balanced handling in micro-scale RC cars. The use of engineering-grade nylon ensures these arms won't become brittle over time or in cold UK weather conditions, maintaining flexibility and impact absorption throughout the product's lifespan. Whether you're running on carpet, tarmac, or outdoor terrain, these arms provide the structural integrity and consistency needed for reliable performance session after session.

What's in the Box

• Front left A-arm (heavy-duty triple beam construction)
• Front right A-arm (heavy-duty triple beam construction)
• Rear left A-arm
• Rear right A-arm

Frequently Asked Questions

• Will these heavy-duty A-arms fit my Losi Micro-B or Micro-T without any modifications? — Yes, these arms are designed as a direct replacement for the stock Losi part number LOS-1768 and require no modifications or additional adapters. Simply remove your factory A-arms and install these RPM units using the existing mounting points and hinge pins on your Micro-B or Micro-T.
• How much stronger are RPM heavy-duty A-arms compared to stock Losi parts? — The engineering improvements include thicker hinge pin bosses, 20% wider support beams, and triple beam construction on the front arms. These design changes significantly increase durability without adding weight, making them substantially stronger than factory components whilst maintaining the lightweight profile essential for micro-scale RC performance.
• Are these A-arms suitable for beginners and casual bashers? — Absolutely. Whether you're a complete beginner setting up your first ready-to-run RC buggy or an experienced RC enthusiast, these arms are an excellent upgrade. Beginners benefit from reduced maintenance and repair costs, whilst experienced drivers appreciate the improved durability for more aggressive driving styles.
• Will upgrading to heavy-duty A-arms improve my Losi Micro-B or Micro-T's handling? — Yes, in several ways. The wider support beams provide improved lateral stiffness, which enhances suspension geometry consistency and cornering stability. The thicker hinge pin bosses reduce flex under load, resulting in more predictable and responsive handling characteristics across various driving conditions.
• How do these A-arms perform in cold UK weather conditions? — RPM engineering-grade nylon maintains its flexibility and impact-absorbing characteristics throughout a wide temperature range, including the cold conditions common throughout the UK. Unlike some brittle materials, these arms won't become prone to cracking in winter conditions, ensuring consistent performance year-round.
• Are these A-arms compatible with both the Micro-B buggy and Micro-T stadium truck? — Yes, these arms fit both the Losi 1/24 Micro-B 2WD Buggy and the Losi 1/28 Micro-T 2WD Stadium Truck, making them ideal if you own either or both of these popular micro-scale RC vehicles.
• What makes RPM A-arms different from other aftermarket suspension components? — RPM's commitment to engineering excellence, American manufacturing standards, and decades of RC industry experience set these components apart. The specific design improvements—thicker hinge pin bosses, wider support beams, and triple beam front construction—are engineered responses to real-world failure modes observed in stock Losi parts, rather than generic upgrades.

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 RPM HEAVY DUTY FRONT & REAR ARMS FOR LOSI MICRO-B/T RPM72242 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.