This super-tough 12T MOD1 Pinion Gear is the perfect part to carry in your RC tool box.
- Manufacturer: ARRMA
- Manufacturer Part Number: AR310473
- Retailer Part Number: Z-AR310473
- EAN: 5052127007665
- Gear Type: Steel Pinion Gear
- Number of Teeth: 12T
- Gear Pitch: MOD1 (Module 1)
- Motor Shaft Bore: 5mm
- Material: Hardened Steel
- Set Screws Included: 2x M4x4mm
- Customer Rating: 4.5 out of 5
- Compatible Vehicle Scales: 1/7 and 1/8
- Compatible Platforms: Mojave 6S (RTR and EXB), Kraton 6S (RTR and Roller), Outcast 6S (RTR and Limited Edition), Notorious 6S RTR, Typhon 6S RTR, Talion 6S RTR
- Features: Precision manufactured tooth profile, dual set screw holes for secure mounting, strong and durable steel for extreme RC conditions
Overview
The ARRMA Steel Pinion Gear 12T Mod1 5mm is an essential replacement and upgrade part for serious RC enthusiasts in the UK who demand reliability and performance from their brushless RC vehicles. This super-tough 12T MOD1 pinion gear is the perfect part to carry in your RC tool box, whether you're bashing at the weekend or competing at the track. Designed specifically for 5mm motor shafts, this precision-engineered component is compatible with a wide range of ARRMA RC models, including the popular 1/8 and 1/7 scale vehicles such as the Kraton, Outcast, Typhon, Talion, Notorious, Mojave and many others.
If you're running a brushless RC buggy, RC speed truck, RC stunt truck or RC desert truck at speed, the pinion gear is critical to your drivetrain's performance and longevity. A worn or damaged pinion gear will affect acceleration, top speed and overall handling. This OEM ARRMA replacement ensures you get back to original factory specifications and performance. Whether you're replacing a worn component after intense bashing sessions or optimising your gearing for a specific track condition, this 12T pinion gear offers the quality assurance that comes only from genuine manufacturer parts.
RC Model Shop stocks this genuine ARRMA part in the UK, ready to ship to RC enthusiasts nationwide. With a 4.5 out of 5 customer rating from ARRMA owners, this pinion gear has proven itself as a reliable, durable choice for demanding RC applications.
Key Features
- Strong and Durable Steel Construction — This pinion gear is manufactured from hardened steel, which provides exceptional strength and durability to withstand extreme RC conditions including high-speed racing, aggressive bashing and heavy-duty off-road driving. Steel gears maintain their tooth profile longer than plastic alternatives, reducing wear and ensuring consistent performance over extended periods of use.
- 12-Tooth MOD1 Specification — The 12T gear profile is a popular choice for balanced performance across a wide range of ARRMA models. MOD1 refers to the gear pitch (module), which is the international standard measurement for gear tooth size and spacing. This specification ensures perfect mesh compatibility with matching spur gears on your RC drivetrain.
- Precision Manufactured Tooth Profile — Each tooth is cut with precision engineering to ensure smooth, quiet operation and optimal power transfer from your brushless motor to the spur gear. The accuracy of the tooth profile reduces vibration, improves efficiency and extends the lifespan of both the pinion and spur gear.
- 5mm Motor Shaft Fitment — This pinion gear is designed to fit standard 5mm diameter motor shafts found in most modern brushless RC motors. The 5mm bore is the industry standard for 1/8, 1/7 and larger scale RC vehicles.
- Dual Set Screw Mounting Holes — The gear features precision manufactured double set screw holes on either side of the bore, allowing you to secure the pinion gear to your motor shaft with two M4x4mm set screws (included). This dual-screw design provides extra secure fitting and prevents the gear from slipping or rotating on the shaft during aggressive acceleration and hard cornering.
- Complete Fitting Kit Included — Each purchase includes two M4x4mm set screws as standard, so you have everything needed to install the gear immediately upon receipt. No need to source additional fasteners.
Technical Performance
The ARRMA Steel Pinion Gear 12T Mod1 5mm represents precision engineering at its finest. Manufactured from premium hardened steel, this component is engineered to deliver consistent performance in the most demanding RC applications. The steel material provides superior strength compared to nylon or composite alternatives, making it the preferred choice for serious RC racers and high-speed bashers throughout the UK and beyond. The precision-manufactured tooth profile ensures smooth meshing with your spur gear, reducing noise, vibration and mechanical losses that would otherwise rob you of power and efficiency. The dual set screw mounting system with M4x4mm fasteners guarantees rock-solid fitment to your 5mm motor shaft, eliminating any possibility of gear slip during hard acceleration or cornering. This pinion gear is manufactured to OEM ARRMA specifications and is approved for use on a comprehensive range of ARRMA vehicles including the 1/7 Mojave 6S, 1/8 Kraton 6S, 1/8 Outcast 6S, 1/8 Notorious 6S, 1/8 Typhon 6S and 1/8 Talion 6S models. Whether you're running a brushless speed truck, stunt truck, buggy or desert truck platform, this gear delivers the reliability and durability expected from genuine ARRMA factory parts.
What's in the Box
- 1 x ARRMA Steel Pinion Gear 12T MOD1
- 2 x M4x4mm Set Screws for secure shaft mounting
Frequently Asked Questions
- What ARRMA RC models is this 12T pinion gear compatible with? — This gear is compatible with numerous ARRMA models including the 1/7 Mojave 6S (RTR and EXB versions), 1/8 Kraton 6S (RTR and Roller versions), 1/8 Outcast 6S (RTR and Limited Edition), 1/8 Notorious 6S RTR, 1/8 Typhon 6S RTR and 1/8 Talion 6S RTR. Check the detailed fitment list on the manufacturer's page or consult your vehicle's manual to confirm compatibility with your specific model.
- Is this a genuine ARRMA part or an aftermarket component? — This is a genuine OEM ARRMA part manufactured to factory specifications. The ARRMA # is AR310473, and the Horizon Hobby part number is ARAC7600. Buying genuine parts ensures perfect fit, reliable performance and full compatibility with your ARRMA vehicle.
- What is MOD1 gear pitch and why does it matter? — MOD1 refers to the module or pitch of the gear teeth, measured in millimetres. This is an international standard that defines the size and spacing of gear teeth. MOD1 is the most common pitch for RC vehicles in the 1/8 and 1/7 scale range. Using MOD1 gears ensures perfect mesh with your vehicle's spur gear (also MOD1) for smooth, efficient power transfer.
- Why is steel better than nylon for pinion gears? — Steel gears offer superior durability, strength and longevity compared to nylon or composite gears. Steel maintains its tooth profile longer under load, resists wear from high-speed operation and aggressive bashing, and provides more consistent performance over time. For serious RC enthusiasts who want maximum reliability and minimum maintenance, steel is the best choice.
- Do I need to replace the spur gear when I replace the pinion gear? — While not absolutely necessary, it is good practice to replace both gears together. If your pinion gear has worn significantly, your spur gear has likely experienced wear as well. Replacing both ensures optimal mesh, smooth operation and maximum lifespan for your new components.
- What are the set screws used for and how do I install them? — The two M4x4mm set screws secure the pinion gear to your 5mm motor shaft, preventing it from rotating or slipping during operation. Install the gear onto the motor shaft, align the dual set screw holes with the shaft, then tighten both screws firmly using an appropriate hex key. Ensure both screws are equally tight to maintain balanced gear positioning.
- Is this suitable for beginners? — Yes, this is a straightforward replacement part suitable for any RC enthusiast. Installation is simple: slide the gear onto your motor shaft and tighten the two set screws. No special tools or expertise required, making it ideal for beginners performing their first maintenance or upgrades.
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 Steel Pinion Gear 12T Mod1 5mm Z-AR310473 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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