AS81639

Overview

The Team Associated RC8B4.1/e Rear Suspension Arms in Medium specification are factory-genuine replacement components designed for the critically acclaimed RC8B4.1 platform. These rear suspension arms represent the latest evolution of Team Associated's engineering, incorporating the advanced 3-hole design first introduced on the championship-winning RC8B4.1 buggy. Whether you are maintaining your existing RC8B4.1, building a competition-ready 1/8 scale nitro off-road buggy, or keeping spare parts on hand for race day, these medium-option arms ensure your RC car UK setup remains true to manufacturer specifications and performance standards.

Team Associated designed these rear suspension arms as part of a comprehensive suspension overhaul that prioritises lower centre of gravity, reduced weight, and improved handling on un-groomed outdoor tracks. The medium hardness option provides the ideal balance between durability and compliance, making these arms suitable for both smooth high-grip circuits and rougher, more challenging terrain. By specifying genuine Team Associated parts like these rear suspension arms, you guarantee that your RC8B4.1 or RC8B4.1e maintains the intended geometry and handling characteristics that made it a 2022 IFMAR World Champion-winning design.

These replacement arms are essential maintenance items for any serious RC buggy enthusiast. Racing competitively, bashing hard on weekends, or simply wanting to maintain your buggy in peak condition all demand access to quality spare parts. The AS81639 designation indicates these are medium-specification arms, one of several hardness options Team Associated provides to allow fine-tuning of your suspension geometry and performance envelope.

Key Features

• 3-Hole Rear Suspension Arm Design — These arms feature the innovative 3-hole configuration introduced on the RC8B4.1, allowing you to achieve softer overall shock package settings while still maintaining adequate support during fast turns, a critical engineering advancement for competitive 1/8 scale off-road racing.
• Updated Anti-Roll Bar Geometry — The arms incorporate updated rear anti-roll bar geometry optimised for both smooth and bumpy track surfaces, giving you better handling consistency across a wider variety of racing conditions throughout the UK and beyond.
• Medium Hardness Specification — The medium option strikes the perfect balance between compliance and durability, suitable for general competition use and weekend bashing without being either too soft for high-speed work or too stiff for rough terrain.
• Factory-Genuine Quality — Manufactured by Team Associated using the same processes and materials as original equipment, these arms guarantee perfect fitment and performance on your RC8B4.1 or RC8B4.1e buggy.
• Soft Blend Material Construction — Constructed from Team Associated's updated soft blend suspension arm material, which provides maximum durability in cold weather conditions and during aggressive driving styles.
• Direct RC8B4.1 Platform Compatibility — Designed specifically for the RC8B4.1 and RC8B4.1e chassis platforms, ensuring precise geometry and suspension performance without any modification or adaptation required.

Technical Performance

The RC8B4.1/e Rear Suspension Arms represent Team Associated's latest suspension engineering philosophy, which emphasises lower centre of gravity design and weight reduction while maintaining the structural rigidity necessary for high-performance 1/8 scale nitro racing. These medium-specification arms are machined to exacting tolerances and constructed from soft blend composite material that has been specifically formulated to withstand the demands of competitive off-road racing whilst remaining flexible enough to absorb impacts from rough terrain. The 3-hole design allows drivers to select from multiple mounting positions, enabling fine adjustment of suspension geometry to suit individual track conditions, driver preferences, and setup philosophies. The updated anti-roll bar geometry works in concert with the front suspension to deliver predictable handling in all conditions, whether you are attacking high-grip oiled surfaces or navigating dusty, choppy outdoor dirt circuits. Team Associated's engineering data shows that the medium hardness option provides optimal performance across the broadest range of track conditions, making it the ideal choice for most competitive drivers and weekend enthusiasts alike.

What's in the Box

• Team Associated RC8B4.1/e Rear Suspension Arms (Medium) — one pair ready to install on your RC buggy chassis

Frequently Asked Questions

• Are these rear suspension arms suitable for RC8B4.1 race buggy setup? — Yes, these arms are factory-genuine Team Associated components specifically designed for the RC8B4.1 and RC8B4.1e platforms. They are approved for competition use and are raced by Team Associated factory teams and top competitive drivers worldwide. The medium specification offers the best all-around performance for most racing conditions.
• What is the difference between medium, soft and hard suspension arm options? — Team Associated offers multiple hardness specifications to allow drivers to fine-tune suspension compliance. Medium arms provide a balanced approach suitable for general racing and weekend use. Softer options offer greater compliance on very rough or bumpy tracks, whilst harder options provide more support on smooth, high-grip surfaces. Medium is the most versatile choice for drivers learning setup or racing mixed conditions.
• How often should I replace my RC8B4.1 rear suspension arms? — Replacement intervals depend on usage intensity and driving style. Competitive racers typically inspect and replace arms every 5-10 races or when visible cracking, splitting, or permanent bending occurs. Weekend bashers may need replacement every 20-30 hours of driving. Regular inspection is recommended, as damaged arms compromise handling and can affect safety.
• Can I use these arms on an RC8B4 or other Team Associated models? — No, these arms are specifically designed for the RC8B4.1 and RC8B4.1e platforms only. The RC8B4 uses different arm designs and geometry. Using incorrect arms will result in improper suspension geometry and poor handling. Always use parts specified for your exact model.
• What tools do I need to install these rear suspension arms? — Installation requires basic hex wrenches (typically 1.5mm and 2.0mm for modern Team Associated buggies), a turnbuckle wrench for suspension tuning, and needle-nose pliers. Team Associated recommends using quality FT hex wrench sets designed specifically for RC work to avoid stripping fastener heads.
• Are these suitable for indoor and outdoor racing? — Yes, these medium-specification arms are suitable for both indoor and outdoor racing environments. The soft blend material remains durable in cold conditions and the updated anti-roll bar geometry is optimised for both smooth grooved indoor tracks and rough outdoor dirt circuits.

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 TEAM ASSOCIATED RC8B4.1/e REAR SUSPENSION ARMS, MEDIUM AS81639 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.