Overview
The ARRMA Main Input Gear, 12T Spiral Z-ARA310912 is an essential drivetrain spare part designed for ARRMA RC models, specifically engineered to maintain optimal performance in high-powered brushless RC vehicles. This genuine ARRMA component is the ideal replacement for those looking to restore their RC car UK to factory specifications or upgrade their drivetrain system. Whether you're a dedicated basher, a competitive racer, or someone who enjoys weekend runs with their brushless RC truck, having quality OEM spares on hand ensures your vehicle remains in peak condition and ready for action whenever you are.
Manufactured to ARRMA's strict quality standards, this 12-tooth spiral main input gear is built to handle the demands of modern high-performance RC cars and trucks. The spiral design ensures smoother engagement and reduced noise compared to standard spur gears, whilst delivering reliable power transfer from your motor to the transmission system. This is a critical component in the drivetrain that directly impacts acceleration response, overall smoothness of operation, and the longevity of your entire transmission assembly.
For RC enthusiasts across the UK seeking authentic ARRMA spares that maintain the integrity of their vehicles, this main input gear represents a genuine factory-backed solution. The precise engineering and material quality that ARRMA is recognised for worldwide means you can trust this component to perform consistently, whether you're bashing in muddy fields, racing on grass tracks, or putting your RC through demanding speed runs on tarmac courses.
Key Features
- 12-Tooth Spiral Design — The spiral tooth profile on this main input gear provides superior mesh engagement compared to straight-cut gears, resulting in smoother power delivery, reduced vibration, and quieter operation of your RC vehicle's drivetrain system.
- OEM ARRMA Component — This is a genuine factory original part manufactured by ARRMA, ensuring perfect compatibility and the quality standards you can expect from the brand's professional engineering and rigorous testing protocols.
- Direct Drivetrain Integration — As a main input gear, this component sits at the critical junction where your brushless motor's power enters the transmission, making it essential for efficient power transfer and overall vehicle performance.
- Durable Construction — Manufactured to withstand the extreme forces generated by high-performance brushless RC systems, this gear is built from materials selected specifically for strength, wear resistance, and long-term reliability.
- Drop-In Replacement — This gear is designed to replace the factory unit in compatible ARRMA models, making it straightforward to swap out worn or damaged components without requiring additional modifications or adaptations.
Technical Performance
The ARRMA Main Input Gear, 12T Spiral Z-ARA310912 is engineered as a precision drivetrain component for high-performance RC vehicles. The 12-tooth configuration with spiral cutting provides the ideal balance between acceleration response and efficiency in modern brushless RC systems. The spiral tooth design is particularly important in contemporary RC car UK racing and bashing applications, as it significantly reduces the harsh engagement shock that can occur with traditional straight-cut gears, protecting both the gear itself and surrounding drivetrain components from premature wear. The engineering behind this gear reflects ARRMA's commitment to producing spares that maintain the performance characteristics of their complete ready-to-run models. For users of brushless RC trucks and cars, the smooth power delivery enabled by this gear's spiral profile translates directly into more controllable acceleration, improved traction management, and a more refined driving experience overall. The material composition and manufacturing tolerances ensure consistent performance across multiple pack cycles, meaning you can rely on this component for both recreational bashing and more serious competitive use.
What's in the Box
- ARRMA Main Input Gear, 12T Spiral
Frequently Asked Questions
- What ARRMA models is this main input gear compatible with? — According to the official compatibility information, this Z-ARA310912 main input gear is compatible with the C-ARA5810V2T1, which is the ARRMA 1/5 Outcast 4X4 8S BLX EXB Brushless Stunt Truck RTR. If you own an ARRMA brushless RC truck or vehicle, we recommend checking your specific model number against the manufacturer's compatibility list to ensure correct fitment before ordering.
- Why would I need to replace the main input gear on my ARRMA RC car? — The main input gear is a wear component in your drivetrain that experiences constant stress from your brushless motor's power output. Over time, especially with intensive use, the gear teeth can become worn, damaged, or stripped. If you notice grinding sounds, hesitation during acceleration, or loss of drivetrain efficiency, a worn main input gear may be the culprit. Replacing it with this genuine ARRMA part will restore smooth power delivery and protect other drivetrain components from secondary damage.
- Is this a genuine ARRMA part? — Yes, the Z-ARA310912 is a genuine original equipment manufacturer (OEM) ARRMA component. Ordering from an authorised ARRMA retailer like RC Model Shop ensures you receive authentic spares backed by ARRMA's quality guarantee and engineering standards.
- What is a spiral gear and how does it differ from standard gears? — A spiral gear features teeth that are cut at an angle rather than straight across. This spiral cutting geometry means the teeth engage gradually rather than all at once, resulting in smoother mesh, reduced noise, less shock loading on the drivetrain, and improved overall efficiency. For high-speed RC cars and brushless trucks, spiral gears provide a noticeably more refined feel and can extend the life of your entire transmission system.
- Do I need any other parts to fit this gear? — The main input gear is a direct replacement component that should fit into your existing drivetrain assembly without additional parts. However, if you're performing a complete drivetrain overhaul, you may also want to inspect other gears and bearings for wear. We recommend consulting your ARRMA vehicle manual or contacting our team for guidance on your specific repair needs.
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 ARRMA Main Input Gear, 12T Spiral Z-ARA310912 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.
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.
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