Overview
The Team Associated B6.1 Gear Differential Kit (AS91786) is an essential upgrade and replacement component for owners of Team Associated's legendary B6 platform RC buggies. This precision-engineered differential kit is designed specifically for the B6.1, B6.2, B6.3, and B6.4 models, making it a critical spare part for serious RC enthusiasts in the UK who demand performance, reliability and championship-proven engineering. Whether you're maintaining your competition buggy, upgrading from a ball differential, or building a new setup, this gear differential kit represents the pinnacle of Team Associated's 40-year heritage of winning 2WD RC championships. Since the iconic RC10 revolutionised the sport in 1984, Team Associated has won 12 of the 17 IFMAR World Championships in the 2WD off-road class—more than all other manufacturers combined—and the B6 platform continues this winning tradition with innovative engineering and race-proven components.
The B6.1 platform was specifically engineered for high-traction tracks where forward mass distribution benefits handling and chassis roll can be controlled through low centre of gravity design and anti-roll bars. This gear differential kit is the perfect choice when your build specifications call for a gear differential configuration, offering superior performance characteristics compared to alternative differential designs. Available now from RC Model Shop, this authentic Team Associated part ensures you're installing genuine, factory-quality components that will deliver the precise handling characteristics and durability expected from a true champion's RC buggy. The kit comes ready to integrate into your B6.1-B6.4 build with all necessary components included, though installation expertise and knowledge of your specific model's manual is recommended.
For competitive RC racers, weekend warriors, and dedicated hobbyists across the UK looking to maintain, repair or upgrade their Team Associated RC buggies, this gear differential kit represents a worthwhile investment in preserving and enhancing your vehicle's performance. The straightforward compatibility across the B6 series (B6.1, B6.2, B6.3, and B6.4) means you're buying a versatile component that works across multiple platforms, making it an essential item to have on hand for any serious Team Associated owner.
Key Features
- Precision Gear Differential Design — This kit provides a gear-based differential system that offers superior torque distribution and handling characteristics on high-traction dirt tracks, allowing for more predictable and controlled cornering behaviour compared to ball differential systems.
- Easy-Access Installation — The differential is designed with accessibility in mind, making maintenance, adjustment and replacement straightforward even for those with moderate RC experience, saving you time and frustration during setup or repair work.
- Differential Height Adjustment Capability — The kit includes 0, 1, 2, and 3mm inserts that allow you to fine-tune the differential height position, enabling precise chassis geometry adjustments that directly impact handling balance, stability and cornering performance on your specific track conditions.
- Enhanced Weight Balance and Shock Clearance — The integrated differential assembly is engineered to provide optimal weight distribution and sufficient clearance for shock absorbers, contributing to the overall balance and responsive handling of your buggy.
- Team Associated Factory Engineering — Manufactured by Team Associated using the same quality standards and precision engineering that has won more IFMAR World Championships than any other manufacturer, you're investing in proven race-winning technology.
- Universal B6 Series Compatibility — This single kit works across the B6.1, B6.2, B6.3, and B6.4 platforms, providing versatility and value if you own or plan to own multiple variants of the B6 chassis.
- Genuine Factory Part — As an official Team Associated component, this kit maintains full compatibility with all other B6 series parts, ensuring seamless integration into your existing setup without fitment issues or compromises.
Technical Performance
The Team Associated B6.1 Gear Differential Kit represents the cutting edge of 1/10 scale off-road buggy differential technology. Engineered specifically for the renowned B6 platform, which has earned its place as the winningest 2WD off-road buggy design in competitive RC racing history, this component is built to exacting standards using high-quality materials and precision manufacturing processes. The gear differential system provides superior handling characteristics on high-traction indoor dirt tracks and outdoor racing surfaces where forward weight bias and controlled chassis roll are performance advantages. The included differential height adjustment inserts (0, 1, 2, and 3mm) allow competitors and enthusiasts to dial in the exact geometry needed for their specific track conditions, whether racing in tight indoor venues with medium-to-high grip conditions or wider outdoor circuits. The integration of this differential into the B6.1 platform works in harmony with the chassis's other advanced features including the Layback Stealth transmission for lower and rearward centre of gravity, V2 routed graphite shock towers, and the innovative rear arm design with molded inserts for ultra-fine suspension adjustment. For UK RC enthusiasts running competition setups or maintaining high-performance builds, this gear differential kit provides the precision engineering and proven performance that separates championship-winning buggies from the rest of the field.
What's in the Box
- Gear differential assembly with precision-engineered internal components
- Differential height adjustment inserts: 0mm, 1mm, 2mm, and 3mm options
- All fasteners and hardware required for installation
- Installation and adjustment documentation
What You Need to Complete
- A compatible Team Associated B6.1, B6.2, B6.3, or B6.4 RC buggy chassis
- Silicone differential fluid (recommended: Team Associated FT Silicone Diff Fluid in 500,000 cSt or 1,000,000 cSt depending on track conditions)
- Basic RC tools including hex drivers and screwdrivers for installation
- Reference to your specific model's instruction manual to confirm AS91786 is the correct reference for your build configuration
Frequently Asked Questions
- Is the Team Associated B6.1 Gear Differential Kit compatible with my RC buggy? — This kit is designed specifically for Team Associated B6.1, B6.2, B6.3, and B6.4 models. You should refer to your kit or parts manual to confirm AS91786 is the correct reference for your specific build or maintenance task, as compatibility can vary depending on your exact model variant and any previous modifications you may have made.
- What is the difference between a gear differential and a ball differential? — Gear differentials provide superior torque distribution and more predictable handling characteristics on high-traction tracks, whereas ball differentials offer different performance characteristics suited to lower-traction conditions. The choice between them depends on your racing track conditions and driving preferences. The B6.1 platform was specifically engineered for high-traction tracks, making the gear differential configuration the natural choice for that chassis type.
- What differential fluid do I need for this kit? — Team Associated provides FT Silicone Differential Fluid in two viscosity options: 500,000 cSt for lighter, more reactive differentials, and 1,000,000 cSt for more locked-up, controlled behaviour. Your choice should be based on your track conditions and desired handling characteristics—consult your setup sheets or local competitors for guidance on which viscosity works best at your facility.
- What do the differential height inserts do? — The included 0, 1, 2, and 3mm inserts allow you to adjust the vertical position of the differential assembly within the chassis, which directly affects weight distribution, centre of gravity height, and how the suspension geometry responds to cornering forces. Fine-tuning differential height is an important part of chassis setup for competitive racing.
- Do I need special tools to install this differential kit? — Installation requires only basic RC tools including hex drivers and screwdrivers. Team Associated makes the B6 series with user assembly in mind, and the differential features an easy-access design. However, you should have your instruction manual on hand and familiarise yourself with the assembly process before beginning work.
- Is this kit suitable for beginners? — This is a replacement and upgrade component rather than a complete buggy, making it more suitable for builders with moderate RC experience who are maintaining, repairing or upgrading an existing B6 series buggy. If you're new to RC, you should start with a complete roller or roller kit and familiarise yourself with basic assembly before attempting differential installation and setup.
- How often will I need to replace or rebuild this differential? — With proper maintenance, care and appropriate differential fluid, a Team Associated gear differential should provide many seasons of reliable service. Periodic rebuilding (removing, cleaning and refreshing the internal components and fluid) is recommended at the start of each racing season or after heavy use. Team Associated provides rebuild kits and detailed documentation to support this maintenance.
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 B6.1 GEAR DIFFERENTIAL KIT (FITS B6.1-B6.4) AS91786 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.
- Brand: Team Associated
- Model Number: AS91786
- Barcode: 784695917866
- Compatibility: Team Associated B6.1, B6.2, B6.3, B6.4
- Component Type: Gear Differential Kit
- Scale: 1/10
- Differential Style: Gear differential system
- Differential Height Adjustment Inserts Included: 0mm, 1mm, 2mm, 3mm
- Easy-Access Design: Yes, features easy-access ball differential assembly
- Weight Balance: Optimised for balanced weight distribution
- Shock Clearance: Enhanced clearance for shock absorber integration
- Internal Gear Ratio: 2.6:1 (applicable to B6.1 platform)
- Assembly Required: Yes
- Fitment Classification: Standard Part for specified models
- Manufacturer: Team Associated
- Product Status: Current production part (replacement/upgrade component)
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- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
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