- Brand: ARRMA
- Model Number: ARA310945
- Part Number: Z-ARA310945
- EAN: 5052127032841
- Component Type: Spur Gear
- Spare Part Category: Drivetrain
- Material: CNC-Machined Steel
- Tooth Count: 57T
- Module: 0.8
- Quantity: 1 x Spur Gear
- Compatible Vehicles: ARRMA 1/10 Big Rock 3S 4x4 RTR Brushless Monster Truck (all colour variants), ARRMA 1/10 Granite 3S 4x4 RTR Brushless Monster Truck (all variants), ARRMA 1/10 Kraton 4S 4x4 RTR Brushless Speed Truck (all variants), ARRMA 1/10 Outcast 4S 4x4 RTR Brushless Stunt Truck (all colour variants), ARRMA 1/10 Senton 3S 4x4 RTR Brushless Short Course Truck (all variants), ARRMA 1/8 Typhon 3S 4x4 RTR Brushless Buggy (all colour variants)
- Manufacturing Process: CNC Precision Machined
- Construction: Precision manufactured tooth configuration for consistent pinion gear mesh
Overview
The ARRMA HD Steel 57T Spur Gear, 0.8Mod is a precision-engineered transmission component designed for demanding RC enthusiasts who refuse to compromise on durability and performance. Whether you're running a brushless 4WD RC monster truck, a high-speed RC buggy, or any of the compatible ARRMA models, this heavy-duty spur gear delivers the reliability you need when pushing your RC car to its limits on the track or bashing in the field. Built from super-tough steel and manufactured to exacting tolerances, this is the spur gear that serious RC drivers trust when they need components that can withstand extreme conditions.
This is a replacement spur gear specifically engineered for ARRMA's range of 1/10 and 1/8 scale brushless RC vehicles, including the Big Rock 3S, Granite 3S, Kraton 4S, Outcast 4S, Senton 3S and Typhon 3S models. If you've experienced gear wear, damage during intense driving sessions, or you're simply looking to upgrade to a more durable transmission component, the ARRMA HD Steel 57T Spur Gear is the perfect solution. Unlike softer aluminium alternatives, the steel construction offers superior longevity and consistent performance, making it an essential spare for any serious RC car UK enthusiast.
Compatibility is straightforward: this 57-tooth configuration with 0.8 module specification is designed to mesh perfectly with ARRMA's standard pinion gears across their brushless RC vehicle range. The precision manufacturing ensures smooth engagement and reliable power delivery from your brushless motor to the wheels, eliminating the frustration of poorly meshing gears that can cause noise, vibration and premature wear. Whether you're a weekend basher enjoying your ready to run RC truck or a competitor seeking maximum drivetrain longevity, this heavy-duty replacement component will keep your RC vehicle running smoothly.
Key Features
- CNC-Machined Steel Construction — Every tooth on this spur gear is precision-cut using computer numerical control machinery from solid steel, ensuring perfect accuracy and consistency that translates directly into smoother gear mesh and longer component lifespan compared to cheaper alternatives.
- 0.8 Module Tooth Configuration — The 0.8 module specification is a proven standard in RC engineering that provides the optimal balance between strength and reliability; this precise tooth geometry ensures consistent pinion gear mesh and smooth power delivery across the entire rev range of your brushless motor.
- 57-Tooth Design — With 57 teeth, this spur gear is engineered specifically for the ARRMA brushless RC vehicle lineup; the tooth count directly affects your vehicle's final drive ratio, acceleration characteristics and top speed when paired with your pinion gear.
- Extreme Durability for Harsh Conditions — The super-strong steel material is specifically formulated to withstand the punishment of high-speed running, jumping, hard landings and aggressive driving that would quickly destroy weaker aluminium gears, making this an investment in long-term reliability.
- Ready-to-Install Replacement Component — This is a direct replacement spur gear that requires no modification or adjustment; simply remove the worn gear and install the new ARRMA HD Steel component, then adjust your mesh gap to factory specifications and you're ready to run.
Technical Performance
The ARRMA HD Steel 57T Spur Gear represents the engineering philosophy that prioritises durability without sacrificing performance in competitive RC driving. The 0.8 module tooth specification is a critical dimension in the drivetrain ecosystem; this module size ensures compatibility with ARRMA's matching pinion gears while delivering a tooth profile that effectively distributes loads across a larger surface area. The 57-tooth count places this gear in the higher-ratio category of ARRMA's gear selection, which affects both acceleration and top speed characteristics depending on the pinion gear teeth count used in your setup. Steel is the superior choice for spur gears in high-performance RC applications because it offers approximately three to four times the durability of aluminium alternatives, dramatically extending the intervals between replacement. The CNC machining process ensures that every tooth is identical and perfectly formed, which is absolutely critical for smooth engagement with your pinion gear and for maintaining consistent rotational dynamics throughout acceleration, cruising and deceleration phases. The precision manufacturing tolerances mean that tooth spacing, involute profile and overall concentricity meet ARRMA's exacting specifications, resulting in minimal runout and vibration when installed correctly. This gear is a standard replacement component across the ARRMA 1/10 brushless RTR and 1/8 scale brushless buggy range, providing proven compatibility with vehicles like the Kraton 4S, Outcast 4S, Big Rock 3S, Granite 3S, Senton 3S and Typhon 3S models. When paired with the correct pinion gear configuration for your specific driving style and track conditions, this spur gear will provide thousands of problem-free running hours, making it one of the most cost-effective upgrades an RC car owner can make.
What's in the Box
- 1 x 57T HD Steel Spur Gear (0.8 Module)
Frequently Asked Questions
- What ARRMA models is this spur gear compatible with? — The ARRMA HD Steel 57T Spur Gear is a standard replacement component for the 1/10 Big Rock 3S 4x4 RTR brushless monster truck, the 1/10 Granite 3S 4x4 RTR brushless monster truck, the 1/10 Kraton 4S 4x4 RTR brushless speed truck, the 1/10 Outcast 4S 4x4 RTR brushless stunt truck, the 1/10 Senton 3S 4x4 RTR brushless short course truck, and the 1/8 Typhon 3S 4x4 RTR brushless buggy.
- Why is steel better than aluminium for RC spur gears? — Steel spur gears offer significantly superior durability compared to aluminium alternatives; whilst aluminium gears are lighter and less expensive, steel provides approximately three to four times the longevity before tooth stripping or damage occurs, making steel the preferred choice for any serious RC enthusiast who wants to reduce downtime and replacement costs over the lifetime of their vehicle.
- What does 0.8 module mean? — The module specification (0.8 in this case) is a critical dimension that defines the tooth size and spacing on the gear; a 0.8 module is a proven standard in RC engineering that ensures proper mesh with ARRMA's pinion gears, and changing the module would result in incompatibility and poor performance.
- Is this gear difficult to install? — Installation is straightforward for anyone with basic RC maintenance skills; you simply need to remove the worn spur gear from your vehicle's transmission, install the new ARRMA HD Steel 57T gear onto the spur shaft, then adjust the mesh gap between the spur and pinion gears according to ARRMA's factory specifications using feeler gauges or paper shims.
- What is the difference between a 57-tooth and a 59-tooth spur gear? — The tooth count directly affects your vehicle's gearing ratio; a 57-tooth spur gear (like this one) provides different acceleration and top speed characteristics compared to a 59-tooth alternative, with higher-tooth-count gears typically delivering lower gearing ratios that favour top speed over acceleration.
- How long will this spur gear last? — The lifespan of your spur gear depends on driving style, track conditions, maintenance practices and the condition of your pinion gear; however, steel spur gears like this ARRMA HD component typically last significantly longer than aluminium alternatives, often providing thousands of running hours before tooth wear becomes apparent.
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 HD Steel 57T Spur Gear, 0.8Mod Z-ARA310945 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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