Overview
The Team Associated B74 Centre Diff Spur Gears (AS92149) represent a precision tuning solution for RC car enthusiasts across the UK who demand finer control over their drivetrain performance. This dual-gear package supplies both 72-tooth and 78-tooth spur gear options, allowing you to optimise your centre differential setup to match specific track conditions, driving styles, and motor characteristics. Whether you're competing at the highest level or enjoying weekend bashing with your RC buggy, having the ability to fine-tune your gear ratio is essential for unlocking the full potential of your Team Associated B74.
These genuine Team Associated spares are engineered to OEM specifications and manufactured to the exacting standards that the brand is renowned for across competitive RC racing worldwide. By offering two tooth counts in a single package, this product eliminates the need to purchase multiple separate gears, making it an economical choice for serious RC enthusiasts who understand that small drivetrain adjustments can deliver significant performance gains. Whether you're looking to improve acceleration response or find the sweet spot between top speed and torque delivery, the AS92149 gives you the flexibility to experiment and dial in your perfect setup without major modifications to other drivetrain components.
Available now at RC Model Shop, this is an essential upgrade for any Team Associated B74 owner seeking to maximise their RC car's performance on different track layouts and surface types. The simple installation process means you can swap between gears quickly, making this ideal for testing and tuning sessions where you need to evaluate different configurations before settling on your final setup.
Key Features
- Dual tooth count options (72T and 78T) — The package provides two different spur gear sizes, allowing you to fine-tune your final drive ratio without needing to purchase separate products, saving money and giving you instant access to multiple tuning configurations.
- Centre differential compatibility — These gears are specifically engineered to work with the Team Associated B74 centre differential system, ensuring perfect fitment and optimal power delivery across all driving conditions.
- Acceleration and top speed tuning — By switching between the 72-tooth and 78-tooth options, you can adjust your gearing to prioritise either stronger acceleration off-the-line or higher maximum velocity, depending on your track layout and driving preferences.
- OEM Team Associated quality — Manufactured to the same specifications and quality standards as original equipment, these gears are precision-cut and balanced for reliable performance in competitive and recreational RC racing.
- Straightforward installation — No special tools or extensive modifications required; simply swap out your existing spur gear for either option and begin testing to find the perfect balance for your specific conditions and motor setup.
- Ideal for track-specific tuning — Different tracks demand different gear ratios; having both 72T and 78T options means you're equipped to optimise performance whether you're racing on tight technical courses, wide open tracks, or practising at home.
Technical Performance
These centre differential spur gears are precision-engineered components designed to deliver smooth power transmission and consistent performance in your Team Associated B74 RC buggy. The choice between 72-tooth and 78-tooth configurations allows you to manipulate your final drive ratio, which directly influences how your RC car's motor output is translated into wheel speed and acceleration. A lower tooth count (72T) will provide quicker acceleration and lower top speed, making it preferable for tight, technical tracks where rapid direction changes and responsive handling are paramount. Conversely, the higher tooth count (78T) delivers slightly reduced acceleration but increases top speed capability, making it the better choice for wide-open circuits where sustained speed and efficiency matter more. The gears are manufactured from hardened materials to withstand the stresses of RC racing, ensuring longevity even during intense competition or frequent practice sessions. Compatibility with your B74's existing drivetrain means installation is straightforward, and the performance gains are immediate and measurable once you take your car out for testing.
What's in the Box
- 72-tooth centre differential spur gear
- 78-tooth centre differential spur gear
Frequently Asked Questions
- What is the difference between the 72-tooth and 78-tooth spur gears? — The tooth count directly affects your gear ratio and therefore your vehicle's performance characteristics. The 72T gear provides quicker acceleration and lower top speed, ideal for technical tracks with tight corners. The 78T gear reduces acceleration slightly but increases top speed potential, better suited for open circuits where maintaining speed is advantageous. You should test both to determine which works best for your specific track and driving style.
- Will these gears fit my Team Associated B74? — Yes, these gears are specifically designed for the Team Associated B74 centre differential system and are genuine OEM parts manufactured to precise specifications for perfect fitment and compatibility.
- Do I need any special tools to install these gears? — Installation is straightforward and requires no special tools beyond basic RC maintenance equipment. Simply follow your B74's manual instructions for gear replacement, and you'll have your new setup ready for testing within minutes.
- How do I know which tooth count to use? — Start with testing both options on your preferred track. If you need more acceleration and feel your top speed is sufficient, use the 72T. If you want higher maximum velocity and have adequate acceleration, try the 78T. Most racers find one configuration works better for their driving style, though some keep both on hand for different track layouts.
- Are these suitable for beginners? — These are tuning components best suited to owners who already have a Team Associated B74 and understand basic drivetrain concepts. If you're new to RC cars, focus on mastering the basics with your stock setup first, then experiment with gear tuning as you progress.
- Will changing the spur gear affect my motor or battery? — No, changing the spur gear ratio will not require different motors or batteries. However, you may notice slight changes in current draw and runtime depending which gear you select; lower tooth counts (72T) typically draw slightly more current, whilst higher counts (78T) may extend battery life slightly under certain conditions.
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 B74 Centre Diff Spur Gears, 72/78 Tooth AS92149 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: AS92149
- Product type: Centre differential spur gears
- Compatibility: Team Associated B74 centre differential
- Spur gear tooth count options: 72-tooth and 78-tooth
- Barcode: 784695921498
- Quantity supplied: Two spur gears (one 72T, one 78T)
- Purpose: Fine-tuning gear ratio for acceleration and top speed balance
- Application: Tuning drivetrain setup for different tracks and driving styles
- Installation: Standard fitment, straightforward replacement
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- 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.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
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- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
