RC Overhaul Pinion Gear 22T Mod 0.5 2.3mm Shaft Chromium Steel G-RCO-AR032-22

• Brand: RC Overhaul
• Part Number: G-RCO-AR032-22
• Barcode: 5055320231516
• Tooth Count: 22T
• Pitch: Mod 0.5
• Motor Shaft Size: 2.3mm
• Material: Chromium Steel
• Finish: Black, Corrosion-Resistant
• Included Fastener: M3 x 4mm Set Screw
• Compatibility: ARRMA Granite GROM, ARRMA Typhon GROM, ARRMA Mojave GROM, ARRMA Gorgon GROM and other brushed GROM models with 2.3mm motor shaft
• Application: Direct replacement for stock brushed GROM pinions

Overview

The RC Overhaul Pinion 22T (M0.5, 2.3mm Shaft) is a precision-engineered replacement pinion gear designed for RC car enthusiasts across the UK who demand quality and reliability. Whether you're running an ARRMA Granite GROM, Typhon GROM, Mojave GROM, or Gorgon GROM, this pinion gear offers a direct upgrade path from stock brushed motor pinions. Built from chromium steel with a corrosion-resistant black finish, this component represents a significant step forward in drivetrain durability and performance for your RC model.

Pinion gears are critical components in any RC car's drivetrain, transferring power from the motor to the spur gear and ultimately to the wheels. Upgrading to a quality aftermarket pinion gear like this RC Overhaul 22T can improve mesh precision, reduce noise, and extend the lifespan of your entire drivetrain. This is an essential upgrade for anyone serious about maintaining their RC car UK setup, whether you're a weekend basher, a competitive racer, or someone who simply wants their RC vehicle to perform at its best.

The 22-tooth configuration paired with a Mod 0.5 pitch makes this pinion gear compatible with a wide range of ARRMA GROM models, offering reliability and precise meshing that enthusiasts expect from a purpose-built component. If you're looking to replace worn stock gears or upgrade your existing setup, this pinion gear delivers the performance and durability you need.

Key Features

• Chromium Steel Construction — Made from chromium steel, this pinion gear offers exceptional strength and durability compared to standard plastic or softer metal alternatives, ensuring it can withstand the demands of aggressive driving and extended use without stripping or wearing prematurely.
• Black Corrosion-Resistant Finish — The distinctive black finish isn't just for aesthetics; it provides genuine corrosion resistance that protects against moisture, salt spray, and the elements, making this pinion suitable for outdoor RC driving in all UK weather conditions.
• 22 Teeth Configuration — The 22-tooth count is specifically engineered to provide the right balance of acceleration and top speed for GROM-scale vehicles, offering predictable performance that drivers have come to expect from stock setups, but with superior build quality.
• Mod 0.5 Pitch — The Mod 0.5 (0.5 modulus) pitch ensures precise and consistent meshing with your spur gear, reducing backlash and noise whilst improving power transfer efficiency throughout your drivetrain.
• 2.3mm Motor Shaft Compatibility — Precisely machined to fit 2.3mm motor shafts, this pinion gear ensures a secure, wobble-free fit that prevents slipping under load and maintains alignment for optimal drivetrain efficiency.
• M3 x 4mm Set Screw Included — Every pinion gear comes with a quality M3 x 4mm set screw for secure installation, eliminating the need to source fasteners separately and ensuring your pinion stays locked in place during intense driving sessions.
• Direct Stock Replacement — RC Overhaul has engineered this 22T pinion as a direct replacement for stock brushed GROM pinions, meaning installation is straightforward with no modifications required to your existing setup.

Technical Performance

The RC Overhaul 22T pinion gear represents a significant upgrade in drivetrain engineering. Manufactured from chromium steel rather than cast metal or plastic, this component delivers superior strength that translates directly to longer service life and more reliable performance on the track or bash course. The Mod 0.5 pitch specification is critical for smooth operation—it defines the size of the teeth and ensures perfect mesh alignment with your spur gear, reducing friction losses and allowing more of your motor's power to reach the wheels. The 2.3mm shaft bore is precision-machined to extremely tight tolerances, ensuring a secure fit on your brushless or brushed motor without play or wobble. This level of precision is particularly important in RC cars where drivetrain slop can lead to delayed throttle response and unpredictable handling. The black chromium finish does more than look professional; it actively resists corrosion from moisture, mud, and salt, making this pinion an excellent choice for UK RC enthusiasts who drive in variable weather conditions. At just 22 teeth, this configuration provides a good balance for GROM-scale vehicles, offering responsive acceleration without sacrificing top speed potential. When paired with the correct spur gear ratio, this pinion will deliver the performance characteristics you expect from a quality RC car UK setup.

What's in the Box

• RC Overhaul 22T Mod 0.5 Pinion Gear
• M3 x 4mm Set Screw

Frequently Asked Questions

• Is this pinion gear compatible with my ARRMA GROM model? — Yes, this 22T Mod 0.5 pinion with 2.3mm shaft is designed as a direct replacement for stock brushed GROM pinions across multiple ARRMA GROM models including the Granite GROM, Typhon GROM, Mojave GROM, and Gorgon GROM. If your model uses a 2.3mm motor shaft, this pinion will fit perfectly and require no modifications to install.
• What makes a chromium steel pinion better than a standard pinion? — Chromium steel offers significantly greater hardness and strength compared to standard cast metal or plastic alternatives commonly found on stock RC cars. This means the teeth resist stripping, the gear maintains its shape under load, and you'll experience fewer drivetrain failures over time. Additionally, the corrosion-resistant black finish provides protection against the elements, which is particularly valuable if you regularly drive your RC car outdoors in the UK.
• Will I need any special tools to install this pinion gear? — Installation is straightforward and requires only basic hex key tools to remove your old pinion and install the new one. The included M3 x 4mm set screw simply secures the pinion to the motor shaft—no special tools or modifications are needed for ARRMA GROM models with 2.3mm motor shafts.
• How does pinion tooth count affect my RC car's performance? — The 22-tooth count directly influences your RC vehicle's gearing ratio. A 22T pinion is considered a relatively stock-friendly configuration that provides balanced performance between acceleration and top speed. Switching to a larger tooth count (like 24T or 26T) would reduce top speed but increase acceleration, whilst a smaller count (like 20T or 18T) would do the opposite. The 22T standard is proven to work well for GROM vehicles and general bashing.
• Can I use this pinion with a brushless motor? — Yes, this 22T pinion gear is compatible with both brushless and brushed motors as long as they feature a 2.3mm shaft. RC Overhaul designed this as a universal replacement for GROM models that use this specific shaft size, regardless of motor type.
• What is Mod 0.5 pitch and why does it matter? — Modulus (Mod) 0.5 defines the tooth profile and size of the pinion gear. It must match your spur gear's modulus to ensure proper mesh and smooth operation. Using incompatible pitch sizes would result in poor meshing, excessive noise, and premature wear. This pinion is engineered for Mod 0.5 compatibility, so ensure your spur gear also uses Mod 0.5 specification.

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 RCO Pinion 22T (M0.5, 2.3mm Shaft) G-RCO-AR032-22 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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