Overview
The ARRMA Main Input Gear 13T Straight Cut Safe-D is an essential transmission component for serious RC enthusiasts who demand reliability and performance from their RC cars and buggies. This precision-engineered steel gear represents genuine ARRMA OEM parts that are designed to restore your buggy to factory specifications or upgrade your existing setup with a replacement component. Whether you're a weekend basher enjoying RC off-road buggies across the UK or a competitive racer pushing your 1/8 scale brushless RC buggy to its limits, having quality drivetrain components in your RC tool box is crucial for uninterrupted fun and consistent performance.
Built to exacting standards using hard-wearing steel construction, this 13-tooth main input gear features a straight-cut tooth profile that delivers smooth operation even under extreme RC racing conditions. The gear's precision manufacturing ensures 13 perfectly formed gear teeth that mesh consistently with your main diff gear system, maintaining optimal power transfer from your motor to the wheels. For owners of the ARRMA Typhon 6S range, including the V5 and TLR Tuned variants, this is a genuine replacement part that meets the demanding requirements of brushless RC buggy performance.
The ARRMA Safe-D keyed fit system sets this gear apart from generic alternatives, providing a more secure and reliable connection to your input shaft cup and composite sleeve. This advanced retention method prevents slippage and ensures your gear stays properly seated during aggressive driving, whether you're tackling rocky terrain, sand pits, or concrete courses throughout the UK.
Key Features
- Hard-wearing steel construction — Manufactured from robust steel material that resists wear and maintains consistent performance even when subjected to the intense forces generated during aggressive RC buggy driving and racing.
- Straight-cut tooth profile — The straight-cut design provides efficient power transmission with minimal noise while delivering smooth, reliable gear engagement during acceleration and deceleration in all driving conditions.
- 13 precision manufactured gear teeth — Each tooth is precisely engineered to exact tolerances, ensuring smooth operation and consistent mesh with your main diff gear (AR310441) to deliver reliable power distribution across extreme RC conditions.
- ARRMA Safe-D keyed fit system — This advanced locking mechanism creates a secure connection between the gear and your input shaft cup, utilising a composite sleeve for enhanced grip and preventing gear slippage during high-torque moments that occur in competitive RC buggy racing.
- OEM quality component — As a genuine ARRMA part, this gear meets factory specifications and quality standards, ensuring perfect compatibility with ARRMA Typhon 6S models and reliable performance that aftermarket alternatives may not provide.
Technical Performance
This main input gear represents the heart of your ARRMA Typhon 6S transmission system, serving as the critical interface between your brushless motor's output and your vehicle's drivetrain. The 13-tooth configuration is specifically engineered for the 1/8 scale ARRMA buggy platform, optimised to work in conjunction with the 43-tooth main diff gear (AR310441) to provide the correct gear ratios required for both high-speed racing and aggressive off-road bashing. The straight-cut tooth design minimises backlash and ensures efficient power delivery, which is essential for maintaining acceleration response and precise throttle control on your RC buggy. The hard-wearing steel material has been selected to withstand the extreme forces generated by modern brushless motor systems, providing durability that matches the performance capabilities of 6S LiPo powered RC vehicles. The Safe-D keyed fit system represents ARRMA's commitment to reliability, incorporating a composite sleeve that prevents the gear from rotating on the input shaft, a common failure mode in lesser-quality gearbox designs that can result in loss of drive and race-ending disasters.
What's in the Box
- 1 x Main Input Gear 13T Straight Cut
What You Need to Complete
- Main Diff Gear 43T Straight (AR310441) — Required for proper gearbox assembly and correct gear ratio
- Input Shaft Cup Sleeve, pack of 4 (ARA310976) — Essential for the Safe-D keyed fit system
- Input Shaft Cup Safe-D (ARA310977) — Required for mounting the gear to the input shaft
Frequently Asked Questions
- What ARRMA models is this 13T main input gear compatible with? — This genuine ARRMA part is specifically designed for the 1/8 scale ARRMA Typhon 6S range, including the ARA8606V5 (Typhon 6S V5 4X4 RTR), ARA8306 (Typhon 6S TLR Tuned 4X4 Roller), and ARA8406 (Typhon 6S TLR Tuned 4X4 RTR) models. If you own a different ARRMA model, please verify compatibility before ordering.
- Do I need any other parts when replacing this gear? — Yes, this gear must be used with the main diff gear AR310441 and the input shaft cup components ARA310976 and ARA310977 for proper assembly. If you are doing a complete transmission rebuild, you should check all related transmission components for wear.
- What is the difference between straight-cut and helical gears in RC buggies? — This gear features a straight-cut tooth profile, which means the teeth are cut parallel to the gear's axis. Straight-cut gears provide direct power transmission with minimal noise and are the standard specification for ARRMA Typhon 6S models. This design has been proven in competitive racing and high-performance bashing applications.
- Is this a genuine ARRMA part? — Yes, this is a genuine ARRMA OEM component with the official ARRMA part number ARA311055. Purchasing genuine parts ensures compatibility, warranty coverage, and performance that matches your buggy's design specifications.
- Why is the Safe-D keyed fit system important? — The Safe-D system prevents the gear from slipping or rotating on the input shaft during extreme driving conditions. The composite sleeve provides additional grip and security, which is essential for maintaining consistent performance during competitive RC racing where high torque loads are constantly applied.
- How often should I replace my main input gear? — Under normal driving conditions, quality steel gears last for extended periods. However, if you experience jumping out of gear, grinding noises, or loss of drive, it may be time to inspect and replace the main input gear as part of a transmission service.
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 13T Straight Cut Safe-D Z-ARA311055 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.
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