Overview
The ARRMA 21T Mod1 Safe-D8 Pinion Gear Z-ARA311041 is a genuine replacement pinion gear designed for high-performance brushless RC cars and trucks. Whether you're upgrading your gearing setup for improved acceleration or replacing a worn component on your existing RC vehicle, this pinion gear delivers the precision engineering you'd expect from ARRMA, one of the leading manufacturers of ready to run RC models in the UK. This gear is specifically engineered to work with ARRMA's Safe-D8 bore system, ensuring a secure and reliable fit that won't slip under load during intense driving sessions.
Built to exacting standards, the ARRMA 21T Mod1 pinion gear is the choice of serious RC enthusiasts who demand nothing but the best from their equipment. Whether you're a weekend basher pushing your RC car to its limits or a competitor looking for that extra edge on the track, this genuine ARRMA component will help you achieve the performance characteristics you're aiming for. The Safe-D8 bore design provides a solid mechanical connection to your motor shaft, preventing the frustration of gear slippage that can occur with lower-quality aftermarket alternatives.
Compatible with multiple ARRMA models including the 1/7 LIMITLESS 8S AVC 4X4 RTR BLX and the 1/5 Outcast 4X4 8S BLX EXB, this pinion gear is an essential spare or upgrade component for anyone running a brushless RC truck or car in the UK. Having spare pinion gears on hand ensures you can get back to racing quickly if your current gear becomes damaged during competition or practice.
Key Features
- 21-22 Tooth Configuration — The 21-tooth specification provides the precise gear ratio needed for optimal acceleration and top-end performance in your ARRMA RC vehicle, giving you the flexibility to fine-tune your driving experience based on your track conditions and driving style.
- Mod 1 Gear Pitch — Mod 1 pitch ensures perfect compatibility with ARRMA's transmission and motor pinion systems, guaranteeing smooth engagement and reliable power delivery without grinding or slipping during acceleration and deceleration.
- Safe-D8 Bore System — The Safe-D8 bore provides a secure mechanical connection that prevents gear slip, crucial for maintaining consistent performance during high-acceleration runs and ensuring your motor's full power is transferred efficiently to the drivetrain.
- Genuine ARRMA Component — As an authentic ARRMA part, this pinion gear is manufactured to the exact specifications used in factory-built ARRMA RC cars and trucks, guaranteeing quality, durability and perfect fitment.
- Direct Compatibility — Specifically engineered for use with ARRMA's brushless 8S LiPo-powered models, this gear integrates seamlessly with your existing setup without modification or adapters.
Technical Performance
The ARRMA 21T Mod1 Safe-D8 Pinion Gear represents precision engineering at its finest. With its 21-tooth design and Mod 1 gear pitch, this component is optimised to work in harmony with ARRMA's brushless motor systems, delivering reliable power transmission in high-performance 8S LiPo-powered RC vehicles. The Safe-D8 bore specification ensures that your motor shaft engages securely with the pinion gear, eliminating the possibility of shaft slip during hard acceleration or competition driving. This level of precision is essential when you're pushing a 1/7 scale RC truck or 1/5 scale brushless vehicle to its limits. The gear's robust construction ensures it can withstand the stresses of intensive use, whether you're bashing around the local track or competing at serious RC events throughout the UK. Built from high-quality materials, this pinion gear maintains its tooth profile and engagement characteristics through hundreds of runs, providing consistent performance and reliability that serious RC enthusiasts depend on.
What's in the Box
- ARRMA 21T Mod1 Safe-D8 Pinion Gear
Frequently Asked Questions
- What ARRMA RC cars and trucks is this pinion gear compatible with? — This 21T Mod1 Safe-D8 pinion gear is compatible with the ARRMA 1/7 LIMITLESS 8S AVC 4X4 RTR BLX Street Speed (available in both Red/Black and White/Blue colour options) and the ARRMA 1/5 Outcast 4X4 8S BLX EXB brushless stunt truck. If you own one of these ready to run RC models, this pinion gear will integrate perfectly into your vehicle's drivetrain.
- What does the Safe-D8 bore specification mean? — The Safe-D8 bore is ARRMA's proprietary shaft engagement system that provides a secure, slip-free connection between the motor shaft and the pinion gear. This design prevents gear slippage under acceleration, ensuring all of your brushless motor's power is efficiently transferred to the vehicle's drivetrain, which is critical for both performance and reliability during intensive RC driving.
- Why would I need to replace my pinion gear? — Pinion gears can become worn, stripped, or damaged through normal use, especially in high-powered brushless RC vehicles running on 8S LiPo batteries. Having a spare genuine ARRMA 21T Mod1 pinion gear means you can quickly replace a damaged gear and get back to driving without waiting for delivery or settling for inferior aftermarket alternatives.
- Is this a genuine ARRMA part? — Yes, the Z-ARA311041 is a genuine factory ARRMA component manufactured to the same exacting standards as the pinion gears included in new ARRMA ready to run kits. This ensures perfect compatibility, durability, and performance with your ARRMA RC vehicle.
- What is the difference between Mod 1 and other gear pitches? — Gear pitch (Mod 1, Mod 0.8, etc.) refers to the size and spacing of the gear teeth. Mod 1 is ARRMA's standard specification for their 8S brushless models, ensuring perfect mesh and engagement with the spur gear in your transmission. Using the correct gear pitch is essential for smooth, reliable operation.
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 21T Mod1 Safe-D8 Pinion Gear Z-ARA311041 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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