Team Associated RC8B4e 1/10 FWB/RWB Buggy Chassis AS81644

Overview

The Team Associated RC8B4e FWB/RWB Chassis (AS81644) represents a significant advancement in tuning flexibility for competitive 1/10 scale RC buggy racing. Developed during 2023 in response to feedback from Team Associated drivers, this innovative chassis system gives racers the ability to shift weight bias to suit dramatically different track conditions. Whether you're competing on lower grip ungroomed tracks or adapting to bumpy terrain, this chassis kit provides the tuning range necessary to optimise your RC car UK performance in ways that were previously impossible with fixed geometry setups.

This is not a complete ready to run RC car — rather, it's a precision upgrade component designed for owners of the RC8B4e or RC8B4.1e who want to unlock advanced performance tuning capabilities. The FWB/RWB (Forward/Rear Weight Bias) system allows you to reposition both the motor and centre differential between two locations, fundamentally changing how your RC buggy handles weight transfer, steering response and traction delivery. For serious competitors and enthusiasts who demand the ultimate in setup flexibility, this chassis represents a game-changing addition to your RC hobby arsenal.

The engineering behind this system showcases Team Associated's commitment to performance innovation. The new chassis design installs the drivetrain in reverse orientation compared to the original kit, which provides a positive torque reaction that aids rear grip on power delivery. This thoughtful engineering detail demonstrates that this isn't simply a chassis swap — it's a complete weight bias tuning system engineered from the ground up to improve handling characteristics across a wider range of track conditions than ever before possible.

Key Features

• Dual Motor and Centre Differential Positioning — The system offers two distinct mounting locations for both the motor and centre differential assembly, allowing you to fundamentally alter your RC buggy's weight distribution without purchasing multiple complete chassis units. The forward position maintains the original location for maximum steering response, whilst the rearward position shifts weight toward the rear to increase rear grip and lighten the front end, making it ideal for low grip or bumpy conditions.
• Forward Weight Bias Configuration — When positioned in the forward location (the original position), the motor and centre differential placement delivers maximum steering authority and response, making this configuration ideal for high grip surfaces where sharp directional changes and quick turn-in are critical to competitive performance.
• Rearward Weight Bias Configuration — By moving the motor and centre differential to the rear position, you achieve increased rear traction and a lighter front end, specifically engineered to excel on lower grip ungroomed tracks where rear grip and traction delivery are often the limiting factor in acceleration and corner exit speed.
• Reverse Drivetrain Orientation — The new chassis design installs the drivetrain in reverse orientation from the original RC8B4e kit, creating a positive torque reaction that actively aids rear grip when applying power. This engineering detail makes a measurable difference in how power is transferred to the rear tyres and how weight shifts during acceleration.
• Complete System Integration — The FWB/RWB chassis works seamlessly with existing RC8B4e drivetrain components, utilising the original #81581 104mm centre dogbone from your existing kit whilst accommodating the new 96.5mm centre dogbone set (sold separately) for users who require the shorter option.
• Track-Specific Tuning Capability — This chassis system was specifically developed to address the real-world challenge of tuning for variable track conditions, giving you the flexibility to optimise setup for different venues and surfaces throughout the racing season without purchasing alternative chassis or complete replacement kits.

Technical Performance

The RC8B4e FWB/RWB Chassis AS81644 represents precision engineering at its finest, designed for competitive 1/10 scale off-road buggy racing where every fraction of a second matters. This is a chassis component designed to integrate with existing RC8B4e and RC8B4.1e platforms, fundamentally expanding their tuning envelope without requiring a complete vehicle overhaul. The dual-position system for motor and centre differential placement provides measurable changes in weight bias and handling characteristics — not minor tweaks, but genuine performance improvements across different track conditions. The reverse drivetrain orientation engineered into this new chassis design actively contributes to improved traction by creating positive torque reaction during power delivery, meaning weight shifts work with you rather than against you. The use of proven dogbone designs (the existing 104mm component plus the optional 96.5mm alternative) ensures compatibility with established drivetrain standards whilst maintaining the precision engineering standards Team Associated is recognised for throughout the RC hobby community. This is premium upgrade hardware for serious racers who understand the value of having setup flexibility and the ability to optimise their RC car UK for success across varying track conditions.

What's in the Box

• RC8B4e FWB/RWB Chassis (AS81644)
• Detailed assembly and positioning instructions
• Weight bias tuning documentation

What You Need to Complete

• RC8B4e or RC8B4.1e rolling chassis platform (this is an upgrade component, not a complete car)
• RC8B4e FWB/RWB Adapter and 96.5mm Dogbone Set (AS81645) — required to fully implement the FWB/RWB system
• Existing drivetrain components from your current RC8B4e setup
• Motor, ESC, servo, battery and radio system (these transfer from your existing vehicle)

Compatibility and Requirements

This chassis upgrade is specifically designed for Team Associated RC8B4e and RC8B4.1e owners. To implement the complete FWB/RWB system, you will need both the chassis component (AS81644 — which you're purchasing) and the RC8B4e FWB/RWB Adapter and 96.5mm Dogbone Set (AS81645), which is sold separately. Your existing RC8B4e kit's #81581 104mm centre dogbone component will work directly with these new parts. If you prefer to use the shorter 96.5mm centre dogbone configuration, the AS81646 Centre Dogbone Set is available separately as a spare part option (though it's also included within the AS81645 adapter kit, so you only need to purchase it separately if you want additional spares). Team Associated includes comprehensive instructions with the chassis to walk you through the transition process and positioning for both forward and rearward weight bias configurations.

Frequently Asked Questions

• What is the FWB/RWB system and how does it improve my RC buggy's performance? — FWB/RWB stands for Forward/Rear Weight Bias, a tuning system that allows you to reposition the motor and centre differential between two locations on the chassis. The forward position (original location) maximises steering response for high grip tracks, whilst the rearward position shifts weight to the rear for increased traction on low grip or bumpy ungroomed surfaces. This gives you two completely different handling characteristics from a single chassis platform.
• Do I need to buy anything else to use this chassis upgrade? — Yes, to fully implement the FWB/RWB system you must purchase both this chassis (AS81644) and the RC8B4e FWB/RWB Adapter and 96.5mm Dogbone Set (AS81645). Your existing RC8B4e drivetrain components and the original 104mm dogbone from your kit will also be needed. Team Associated's instructions guide you through the complete installation process.
• Is this a complete ready to run RC car or just an upgrade component? — This is an upgrade component designed exclusively for existing RC8B4e or RC8B4.1e owners. It is not a complete car and cannot function independently. You must have an existing RC8B4e platform with motor, ESC, servo, battery and radio system to use this chassis upgrade.
• What is the benefit of the reverse drivetrain orientation? — The new chassis design installs the drivetrain in reverse orientation from the original kit, creating a positive torque reaction that actively aids rear grip during power delivery. This engineering improvement means your weight transfer works with you, improving traction and acceleration characteristics particularly on lower grip surfaces.
• Can I switch between forward and rearward weight bias positions during a race season? — Yes, that's the entire purpose of the FWB/RWB system. You can reposition the motor and centre differential between forward and rearward locations to suit different track conditions, giving you flexibility to optimise your setup throughout the racing season without purchasing alternative chassis units.
• Will my existing RC8B4e components work with this new chassis? — Most components transfer directly. Your existing drivetrain will work, and the original #81581 104mm centre dogbone from your kit is used with these new parts. You'll need the AS81645 adapter kit to complete the system, and optionally the AS81646 96.5mm dogbone set for the shorter configuration if preferred.
• What makes this better than just buying a different chassis? — Rather than purchasing and maintaining multiple chassis platforms for different conditions, this system gives you dual-position tuning from a single chassis foundation. You get the engineering benefits of both configurations without the cost and complexity of managing completely separate chassis systems, and the reverse drivetrain orientation provides specific performance advantages unique to this design.

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 RC8B4e FWB/RWB CHASSIS AS81644 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.