Overview
The ARRMA Pinion Gear, 22T HD Mod1 Safe-D5 is an essential replacement part for serious RC enthusiasts in the UK who demand reliability and precision engineering. Whether you're running an ARRMA 1/5 brushless speed truck, 1/7 monster truck, or 1/8 high-performance buggy, this pinion gear is engineered to deliver consistent performance in extreme RC conditions. This tough steel 22T Mod1 pinion gear represents the perfect addition to your RC car maintenance kit, ensuring your drivetrain remains in peak condition whether you're bashing on weekends or competing at the track.
Manufactured to exacting standards by ARRMA, this pinion gear combines durability with precision engineering to give you the performance your brushless RC vehicle demands. The Safe-D5 design with its distinctive D-shaped bore represents a significant safety advancement in RC drivetrain technology, preventing the catastrophic loss of drive and brakes if your set-screw ever backs out during intense driving sessions. This is the kind of engineering detail that separates quality RC components from the rest, and it's why experienced RC enthusiasts across the UK trust ARRMA parts for their vehicles.
Available now at RC Model Shop, this pinion gear is ready to ship to RC drivers everywhere in the United Kingdom. If you're serious about maintaining your brushless RC truck, buggy, or stunt truck at peak performance, this is the component you need in your toolbox.
Key Features
- Strong and Durable Steel Construction — Manufactured from high-quality steel, this pinion gear delivers exceptional longevity and can withstand the punishment of extreme RC bashing conditions, high-speed track running, and competitive racing without premature wear or failure.
- Precision Manufactured Wide Tooth Profile — The wide tooth profile is precision engineered to ensure smooth, quiet operation and optimal power transmission from your brushless motor to the spur gear, minimising mesh noise and maximising efficiency across the entire RPM range.
- Safe-D5 D-Shaped Bore Design — Unlike traditional round-bore pinion gears, the D-shaped hole matches your motor's D-shaped shaft profile perfectly, ensuring that drive and brakes cannot be lost if the set-screw backs out during driving, providing crucial safety and reliability that protects your investment.
- 5mm Motor Shaft Compatibility — This pinion gear is specifically designed to suit 5mm diameter motor shafts, making it compatible with a comprehensive range of ARRMA brushless vehicles including 1/5 scale trucks, 1/7 scale monsters and street bashers, and 1/8 scale speed trucks and buggies.
- Precision Manufactured Threaded Set-Screw Hole — The set-screw hole is precision threaded to accept the supplied M4 x 4mm set-screw, ensuring a secure hold on your motor shaft without risk of stripping or loosening under normal driving conditions.
- E-Clip Motor Shaft Retention — The included 3.2mm E-clip provides additional retention security on your motor shaft, working alongside the set-screw to keep your pinion gear exactly where it needs to be during all driving conditions.
Technical Performance
The ARRMA 22T Mod1 Safe-D5 Pinion Gear represents the manufacturer's commitment to delivering professional-grade drivetrain components for brushless RC vehicles. At 22 teeth with Mod1 pitch specifications, this pinion gear delivers the precise gear ratio needed for optimal performance across ARRMA's extensive range of brushless vehicles, from high-speed 1/8 scale buggies and trucks to powerful 1/5 scale speed trucks and stunt trucks. The Mod1 pitch standard ensures compatibility with ARRMA spur gears and transmission systems, whilst the Safe-D5 bore accommodates standard 5mm motor shafts found on all modern ARRMA brushless motors. The wide tooth profile design maximises surface contact area during mesh, resulting in improved power transmission efficiency, reduced backlash, and smoother acceleration delivery whether you're running on-road street bash courses or bashing through rough terrain. Steel construction ensures the gear can handle the torque loads of high-powered brushless motors without deformation, whilst the precision manufacturing process guarantees consistent tooth profile and bore tolerances that translate into minimal vibration and wear. This is the kind of engineering quality that makes ARRMA vehicles renowned across the UK RC community for reliability and performance.
What's in the Box
- 1 x 22T Mod1 Safe-D Pinion Gear (steel, precision manufactured)
- 1 x Set Screw - M4 x 4mm (for securing gear to motor shaft)
- 1 x E-Clip - 3.2mm (additional motor shaft retention)
Frequently Asked Questions
- What ARRMA models is this 22T pinion gear compatible with? — The ARRMA 22T Mod1 Safe-D5 Pinion Gear is compatible with a wide range of ARRMA brushless vehicles including the 1/5 KRATON 8S, 1/5 OUTCAST 8S, 1/7 BIG ROCK 6S, 1/7 FELONY 6S, 1/7 FIRETEAM 6S, 1/7 INFRACTION 6S, 1/7 LIMITLESS 6S, 1/7 MOJAVE 6S, 1/8 KRATON 6S, 1/8 NOTORIOUS 6S, 1/8 OUTCAST 6S, 1/8 TALION 6S, and 1/8 TYPHON 6S models in both standard and EXB roller configurations.
- Why choose the Safe-D5 design over standard round-bore pinions? — The Safe-D5 D-shaped bore design is a significant safety feature that prevents loss of drive and brakes if your set-screw backs out during driving. This design advantage means your RC vehicle remains controllable even in the unlikely event of set-screw loosening, protecting both your vehicle and anyone nearby from unexpected loss of motor drive or braking function.
- Is this suitable for both bashers and racers? — Yes, absolutely. The ARRMA 22T Mod1 pinion gear is designed for all driving styles and conditions. Whether you're a weekend basher enjoying rough terrain bashing on weekends or a dedicated racer competing at the track, the precision engineering and durable steel construction handle all conditions from extreme bashing to competitive racing environments.
- What motor shaft size does this gear fit? — This pinion gear is specifically designed for 5mm diameter motor shafts, which are standard across ARRMA's entire range of brushless motors. If you're unsure whether your motor has a 5mm shaft, check your vehicle's documentation or contact us for assistance.
- Do I need any additional parts to install this gear? — No, everything needed for installation is included in the box. The set-screw and E-clip are both included, so you simply need to remove your old pinion gear and install the new one using the supplied hardware. No additional tools beyond a standard RC hex key are required.
- How often should I replace my pinion gear? — With proper maintenance and reasonable driving, a quality steel pinion gear like this one should last many hours of driving. However, regular inspection during routine maintenance is recommended, particularly if you notice any changes in drive characteristics, noise, or vibration.
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 Pinion Gear, 22T HD Mod1 Safe-D5 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.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
