- Brand: Arrma
- Part Number: Z-ARA310965
- EAN: 5052127035118
- Product Type: Pinion Gear
- Number of Teeth: 18T
- Gear Pitch: Mod 1
- Bore Type: Safe-D5
- Motor Shaft Diameter: 5mm
- Material: Steel
- Set-Screw Size: M4 x 4mm
- E-Clip Size: 3.2mm
- Compatible Models: Arrma Felony 6S BLX (Orange and Black), Arrma 1/5 Outcast 4X4 8S BLX EXB, Arrma 1/7 TALION 6S EXB 4X4, Arrma Typhon 6S V5 BLX
- Included Accessories: 1x Set Screw M4 x 4mm, 1x E-Clip 3.2mm
Overview
The Arrma 18T Mod1 Safe-D5 Pinion Gear is an essential replacement and upgrade component for RC enthusiasts who demand reliability and performance from their brushless RC cars and trucks. Whether you're running an Arrma Felony 6S BLX, Outcast 4X4 8S BLX, TALION 6S EXB, or Typhon 6S V5 BLX, this precision-engineered steel pinion gear is built to withstand the extreme demands of high-performance RC bashing and racing. Based in the UK RC hobby market, this component represents the perfect addition to your RC tool box, offering the durability and precision needed to keep your brushless RC vehicle running at peak performance.
This tough steel pinion gear features innovative Safe-D technology, which provides a critical safety advantage that many RC drivers overlook. The 'D' shaped hole is specifically designed to match the motor shaft profile of 5mm motor shafts, ensuring that drive and brakes are not lost if the set-screw backs out during aggressive driving. This is a genuine concern for RC car UK users who frequently bash their vehicles in challenging conditions, and the Safe-D5 design eliminates this risk entirely. For anyone serious about maintaining their brushless RC setup, this is a genuinely valuable upgrade over standard pinion gears.
Manufactured to exacting standards with precision engineering throughout, the Arrma 18T Mod1 Safe-D5 Pinion Gear delivers smooth, reliable operation that competitive RC drivers and weekend bashers alike can depend on. The wide tooth profile ensures consistent mesh with your spur gear, minimising wear and maximising efficiency. This is the kind of component that separates a well-maintained, fast RC truck from one that's constantly breaking down on the track or trail.
Key Features
- Strong and Durable Steel Construction — Manufactured from tough steel, this pinion gear is engineered to handle extreme RC conditions without stripping or failing, ensuring long-lasting performance whether you're racing competitively or bashing casually in your local park.
- Precision Manufactured Wide Tooth Profile — The carefully designed wide tooth profile delivers smooth operation during acceleration and deceleration, reducing stress on both the pinion and spur gear whilst maintaining efficient power delivery from your brushless motor to the wheels.
- Safe-D5 Technology with D-Shaped Hole — This innovative design feature matches the motor shaft profile exactly, preventing drive loss and brake failure even if the set-screw backs out during hard driving, which is a genuine concern for high-performance RC cars on rough terrain.
- 5mm Motor Shaft Compatibility — Designed specifically for 5mm diameter motor shafts, this pinion gear ensures a perfect fit with compatible Arrma brushless motors, eliminating wobble and ensuring consistent performance every time you drive.
- Precision Manufactured Threaded Set-Screw Hole — The finely engineered M4 x 4mm set-screw hole is cut to exacting tolerances, ensuring secure fastening and preventing loosening during intense driving sessions.
- E-Clip Retention System — The included 3.2mm E-clip provides a secondary retention method for the pinion on your motor shaft, offering additional security and peace of mind when driving at high speeds.
Technical Performance
The Arrma 18T Mod1 Safe-D5 Pinion Gear represents professional-grade engineering built into a small but critical component. With an 18-tooth configuration and Mod 1 pitch specification, this gear is designed to work seamlessly with Arrma's brushless motor systems found in performance vehicles such as the Felony 6S BLX, the Outcast 4X4 8S BLX EXB Brushless Stunt Truck, the TALION 6S EXB 4X4 speed truck, and the Typhon 6S V5 BLX. The precision manufacturing ensures that tooth engagement is consistent and smooth, critical for vehicles that demand high torque delivery and rapid acceleration. The Safe-D5 bore design is a game-changer for serious RC enthusiasts, as it prevents catastrophic failure where a standard pinion gear might slip on the motor shaft, cutting engine power and rendering your brakes ineffective. The wide tooth profile reduces impact stress at each gear mesh cycle, extending the lifespan of both the pinion and spur gear whilst maintaining the efficiency needed for competitive racing or recreational bashing in the UK RC car community.
What's in the Box
- 1 x 18T Mod1 Safe-D Pinion Gear
- 1 x Set Screw - M4 x 4mm
- 1 x E-Clip - 3.2mm
Frequently Asked Questions
- What is the Safe-D5 design and why does it matter for my RC car? — The Safe-D5 design features a D-shaped hole that precisely matches the profile of your 5mm motor shaft. Unlike round holes found on standard pinion gears, the D-shaped design prevents the gear from slipping if the set-screw backs out during driving. This is crucial for maintaining both drive and braking power, particularly when driving aggressively on rough terrain or at high speeds. For RC car UK drivers, this is a significant safety feature that prevents unexpected loss of power.
- Is this pinion gear compatible with my Arrma RC truck? — Yes, if you own an Arrma Felony 6S BLX (Orange or Black), Arrma 1/5 Outcast 4X4 8S BLX EXB, Arrma 1/7 TALION 6S EXB 4X4, or Arrma Typhon 6S V5 BLX, this pinion gear is a direct fit. The 18-tooth Mod 1 configuration with Safe-D5 bore is engineered specifically for these brushless systems.
- What motor shaft diameter does this pinion gear fit? — This pinion gear is designed for 5mm diameter motor shafts. Verify that your brushless motor has a 5mm shaft before purchasing, as using the wrong shaft size will result in poor performance and potential damage.
- Do I need any special tools to install this pinion gear? — Installation is straightforward. You'll need a small hex key to tighten the M4 x 4mm set-screw, and you'll install the 3.2mm E-clip over the shaft to secure the gear. No specialist tools are required, making this a perfect upgrade for RC enthusiasts of all experience levels.
- How often should I replace my pinion gear? — Pinion gear replacement depends on usage frequency and driving style. Aggressive racing and high-speed bashing will wear gears faster than casual weekend driving. Inspect your pinion gear regularly for tooth wear or damage, and replace when you notice grinding sounds or loss of acceleration efficiency.
- Will upgrading to this pinion gear improve my RC car's performance? — If you're replacing a worn or damaged pinion gear, upgrading to this Arrma 18T Mod1 Safe-D5 will restore your vehicle to full performance. The precision manufacturing and Safe-D5 technology also provide added security and longevity compared to lower-quality alternatives, making it a smart investment for any serious RC enthusiast.
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, 18T 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.
