Overview
The ARRMA Pinion Gear 13T Mod 0.5 CNC 3.2mm Bore is an essential replacement component for ARRMA RC enthusiasts across the UK who demand durability and precision in their high-performance RC vehicles. This tough steel pinion gear is specifically engineered to provide a direct replacement for compatible ARRMA RC models, ensuring your RC car, truck, or buggy continues to perform at its peak even under the most demanding racing conditions. Whether you're a seasoned RC competitor, a weekend basher exploring the thrills of off-road RC driving, or someone new to the world of radio-controlled vehicles, having quality replacement parts on hand is crucial for maintaining your investment and keeping your RC experience uninterrupted.
Manufactured by ARRMA, a brand renowned for designing RC vehicles that are 'Designed to be Fast, Designed to be Tough', this pinion gear represents the same commitment to excellence and reliability found throughout their complete range of RC monster trucks, buggies, and high-speed RC trucks. The 13T configuration with Mod 0.5 pitch is a common requirement across ARRMA's popular 1/16 scale models, making this replacement gear an invaluable addition to your RC spares collection. When you're investing in quality RC cars and trucks, having genuine replacement components ensures compatibility, fit, and longevity that third-party alternatives simply cannot match.
Precision manufacturing is at the heart of this component's design, guaranteeing smooth operation and consistent performance throughout the lifespan of your RC vehicle. For UK RC enthusiasts shopping online, this part offers exceptional value and the assurance of genuine ARRMA quality that comes from an authorised retailer.
Key Features
- Tough Steel Construction — Manufactured from strong and durable steel, this pinion gear is built to withstand the intense stresses and impacts inherent in extreme RC conditions, whether you're bashing through rough terrain or racing competitively on track.
- Precision Tooth Profile — The precision-manufactured tooth profile ensures smooth, quiet operation and efficient power transfer from your motor to the drivetrain, reducing wear and extending the lifespan of your entire drive system.
- CNC Manufacturing — Computer Numerical Control manufacturing guarantees dimensional accuracy and consistency, ensuring perfect meshing with your spur gear and eliminating the play or noise that can develop with lower-quality components.
- Precision Set Screw Hole — A precisely manufactured set screw hole ensures secure attachment to your motor shaft with no slippage, even during aggressive acceleration or sudden impacts common in off-road RC driving.
- 3.2mm Bore Size — The 3.2mm bore is specifically designed to fit ARRMA motor shafts, providing a perfect fit that requires no modification or adapter parts.
- 13-Tooth Configuration — The 13-tooth count with Mod 0.5 pitch is the correct specification for compatible ARRMA 1/16 scale models, ensuring immediate compatibility without any guesswork.
- Direct Replacement Part — This is a genuine ARRMA replacement component, not a universal aftermarket part, meaning it has been tested and verified to work perfectly with your specific RC vehicle model.
- Includes Set Screw — The M3x4mm set screw is included in the box, so you have everything needed for installation without sourcing additional fasteners.
Technical Performance
The ARRMA Pinion Gear 13T Mod 0.5 represents a critical component in the drivetrain of your RC vehicle, directly affecting how efficiently power is transferred from the motor to the wheels. With its 13-tooth design and Mod 0.5 pitch specification, this pinion gear is optimised for the motor systems found in ARRMA's popular 1/16 scale range, particularly the Mini Kraton 3S models. The steel construction provides superior durability compared to plastic or composite alternatives, resisting stripping and tooth wear even when subjected to the demanding conditions of high-performance RC driving. The 3.2mm bore diameter ensures compatibility with standard ARRMA motor shafts, whilst the precision-manufactured tooth profile guarantees consistent meshing with the spur gear, maintaining efficient power delivery and reducing mechanical noise. In the context of UK RC enthusiasts building or maintaining brushless RC systems, this component serves as a critical link in the power chain—from the brushless motor through the ESC to the wheels. The CNC manufacturing process ensures that every gear produced meets exact specifications, eliminating the dimensional variations that plague lower-cost alternatives. For those running 3S LiPo batteries or equivalent power systems, this pinion gear has been engineered to handle the torque outputs reliably without slippage or damage to the set screw hole.
What's in the Box
- 13T Mod 0.5 Pinion Gear
- M3x4mm Set Screw
Compatibility
- ARRMA 1/16 Mini Kraton 3S (all colour variants with battery and charger included)
Frequently Asked Questions
- What ARRMA models use the 13T Mod 0.5 pinion gear? — This gear is compatible with the ARRMA 1/16 Mini Kraton 3S, one of ARRMA's most popular entry-level RC vehicles available in the UK market. The Mini Kraton 3S comes in multiple colour variants (Blue, Red, Teal), and all versions use this same pinion gear specification.
- How do I know if I need to replace my pinion gear? — You should inspect your pinion gear regularly, especially after heavy use or crashes. Signs of wear include visible tooth damage, stripped teeth, grinding noises during operation, or difficulty with acceleration. If you notice any of these symptoms in your RC car, a replacement pinion gear should be your first consideration.
- Is this a genuine ARRMA part? — Yes, this is an authentic ARRMA replacement component, not a third-party or aftermarket alternative. It has been manufactured to ARRMA's exact specifications and quality standards, ensuring perfect compatibility and reliability with your RC vehicle.
- How difficult is it to install this pinion gear? — Installation is straightforward and can typically be completed in minutes. You simply need to remove the motor, slide the old pinion gear off the 3.2mm motor shaft, slide the new gear on in its place, align the set screw hole, and secure it using the included M3x4mm set screw. No special tools are required beyond a small hex key.
- Will this work on any RC vehicle? — No, this gear is specifically designed for ARRMA models with 3.2mm motor shafts and Mod 0.5 pitch spur gears. It is not compatible with other brands or ARRMA models that use different gear specifications. Always verify your model's requirements before ordering.
- What is the difference between Mod 0.5 and other gear pitches? — The Mod (module) specification determines the size of the teeth and how they mesh with the spur gear. Mod 0.5 is a smaller pitch commonly found on compact 1/16 scale RC models. Using the wrong pitch will result in poor meshing, noise, and potential drivetrain damage.
- Is this suitable for beginners? — Yes, this replacement gear is ideal for anyone maintaining an ARRMA Mini Kraton 3S, whether they are beginners or experienced RC enthusiasts. The straightforward installation process makes it a perfect entry-level maintenance task for learning how your RC vehicle's drivetrain operates.
- What battery does the compatible Mini Kraton 3S use? — The ARRMA Mini Kraton 3S uses a 3S LiPo battery (approximately 11.1V), which is the most common battery configuration for entry-level ready-to-run RC vehicles in the UK market.
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 Pinion Gear 13T Mod 0.5 CNC 3.2mm Bore Z-ARA-2025 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:
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