The Arrma ARA311000 17T 0.8Mod Safe-D5 pinion gear is a precision-engineered drivetrain component designed to deliver smooth, reliable power transfer in high-performance RC applications. Manufactured from tough black steel, this gear is built to withstand extreme conditions while maintaining consistent engagement and torque delivery. With a 17-tooth profile and 0.8 module pitch, the Arrma ARA311000 steel RC motor pinion gear offers a refined balance of strength and efficiency. Its Safe-D5 design ensures secure fitment to 5mm motor shafts, while the included set screw and E-clip provide added retention and stability. Whether you're upgrading your RC drivetrain or replacing worn components, this gear is engineered for precision and durability.
Key features of the Arrma ARA311000 17T 0.8Mod Safe-D5 pinion gear
- Steel construction – supports long-lasting performance under high torque and extreme RC conditions
- Wide tooth profile – enables smooth and efficient power transfer
- Safe-D5 motor shaft fitment – prevents drive loss if set screw backs out
- Threaded set-screw hole – allows secure and precise installation
- E-clip included – ensures pinion gear retention on motor shaft
The pinion gear ARA311000 Arrma wide tooth profile for smooth operation and steel durability features a carefully machined 17-tooth layout that promotes consistent gear meshing and reduced drivetrain noise. The wider tooth profile enhances contact surface area, which improves torque transmission and minimises wear over time. This design is particularly beneficial for RC drivers who demand smooth acceleration and stable braking across varied terrain. Combined with the steel build, this gear offers a dependable solution for high-stress environments.
How does the Safe-D5 design improve drivetrain reliability?
The RC motor gear ARA311000 Arrma D-shaped hole for secure braking and torque retention incorporates a Safe-D5 interface that matches the profile of 5mm motor shafts. This D-shaped hole prevents rotation loss even if the set screw loosens during operation, ensuring that braking and drive functions remain intact. This feature is critical for maintaining control during high-speed runs and aggressive manoeuvres, making the gear a trusted choice for competitive RC setups.
What role does the set screw and E-clip play in gear stability?
The drive gear ARA311000 Arrma threaded set-screw hole and E-clip for shaft stability includes a precision-machined M4 x 4mm set screw that threads securely into the gear body. This allows for tight clamping onto the motor shaft, reducing the risk of slippage. Additionally, the supplied 3.2mm E-clip adds a secondary layer of retention, locking the gear in place and preventing axial movement. Together, these components ensure that the gear remains firmly mounted during intense driving conditions.
Is the Arrma ARA311000 precision-cut 17T pinion gear suitable for extreme RC use?
Absolutely. The Arrma ARA311000 precision-cut 17T pinion gear is built for durability and performance in demanding RC environments. Its steel composition resists deformation and wear, while the precision-cut teeth maintain consistent engagement with spur gears. This combination of materials and machining quality makes the gear ideal for brushless motor systems and high-speed applications where drivetrain integrity is essential. Whether you're racing on tarmac or bashing through rough terrain, this gear delivers reliable output.
Why is the Arrma ARA311000 steel RC motor pinion gear an affordable upgrade?
For RC enthusiasts seeking a cost-effective performance enhancement, the affordable ARA311000 Arrma RC motor gear with steel build and precision tooth profile offers excellent value. Its robust construction and thoughtful design reduce the need for frequent replacements, while the included hardware simplifies installation. The gear’s compatibility with 5mm motor shafts and its Safe-D5 retention system make it a practical choice for a wide range of RC vehicles. This affordability, paired with high-end performance, makes it a smart investment for hobbyists and professionals alike.
In conclusion, the Arrma ARA311000 17T 0.8Mod Safe-D5 pinion gear combines steel strength, precision engineering, and secure fitment to deliver a dependable solution for RC drivetrain systems. Its wide tooth profile, Safe-D5 motor shaft interface, and included set screw and E-clip work together to ensure smooth operation and long-term reliability. Whether you're upgrading for performance or replacing worn components, this gear supports consistent power delivery and drivetrain control. Buy ARA311000 Arrma pinion gear with Safe-D design and 5mm shaft compatibility today and experience the benefits of precision-cut steel gearing.
Brand, Model and Product Type
- Brand: Arrma
- Model: ARA311000
- Product Type: Arrma ARA311000 17T 0.8Mod Safe-D5 pinion gear, Arrma ARA311000 steel RC motor pinion gear, Arrma ARA311000 precision-cut 17T pinion gear, Pinion gear ARA311000 Arrma wide tooth profile for smooth operation and steel durability, Drive gear ARA311000 Arrma threaded set-screw hole and E-clip for shaft stability
- Product Colour: Black
Dimensions and Weight
- Tooth count: 17T for balanced torque and speed delivery
- Module pitch: 0.8Mod for compatibility with standard RC spur gears
- Motor shaft diameter compatibility: 0.5 cm (5 mm) for secure fitment
- Set screw size: 0.4 cm x 0.4 cm (M4 x 4 mm) for precise locking
- E-clip size: 0.32 cm (3.2 mm) for reliable shaft retention
- Weight: optimised steel mass for drivetrain stability and minimal rotational resistance
Material and Build Quality
- Constructed from durable steel for long-lasting performance in extreme RC conditions
- Black finish enhances corrosion resistance and visual integration with motor components
- Precision-cut teeth ensure consistent gear meshing and reduced drivetrain noise
Design and Fitment Features
- Safe-D5 D-shaped hole matches motor shaft profile to prevent drive loss during operation
- Threaded set-screw hole allows secure installation and prevents gear slippage
- E-clip included for additional retention and axial stability on motor shaft
Performance and Use Case
- Wide tooth profile supports smooth operation and efficient torque transfer
- Suitable for high-speed RC applications requiring reliable power delivery
- Ideal for brushless motor systems with 5 mm shaft diameter
Packaging and Contents
- Includes: 1 x 17T 0.8Mod Safe-D5 pinion gear
- Includes: 1 x M4 x 4 mm set screw
- Includes: 1 x 3.2 mm E-clip
- Packaged for immediate installation and drivetrain servicing
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.
