The Arrma ARA311003 20T 0.8Mod Safe-D5 pinion gear is engineered for RC drivers who demand precision, durability, and consistent drivetrain performance. Manufactured from tough black steel, this gear is built to endure extreme RC conditions while maintaining smooth torque delivery and reliable engagement. With a 20-tooth profile and 0.8 module pitch, the Arrma ARA311003 steel RC motor pinion gear offers an ideal balance of speed and control. Its Safe-D5 interface ensures secure fitment to 5mm motor shafts, and the inclusion of a precision-threaded M4 x 4mm set screw and 3.2mm E-clip provides additional retention and stability. Whether you're upgrading your drivetrain or replacing worn components, the Arrma ARA311003 precision-cut 20T pinion gear delivers dependable performance and long-term resilience.
Key features of the Arrma ARA311003 20T 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 ARA311003 Arrma wide tooth profile for smooth operation and steel durability features a carefully machined 20-tooth layout that enhances gear meshing and reduces drivetrain noise. The wider tooth profile increases surface contact between gear teeth, improving torque transmission and minimising wear. This design is especially beneficial for RC drivers seeking smooth acceleration and consistent braking across varied terrain. Combined with the steel build, this gear offers a dependable solution for high-stress environments and competitive driving.
How does the Safe-D5 interface improve drivetrain reliability?
The RC motor gear ARA311003 Arrma D-shaped hole for secure braking and torque retention incorporates a Safe-D5 profile that matches the geometry of 5mm motor shafts. This D-shaped hole prevents rotational loss even if the set screw loosens during operation, ensuring that braking and drive functions remain uninterrupted. This feature is essential for maintaining control during high-speed runs and aggressive manoeuvres, making the gear a trusted choice for demanding RC applications.
What makes the set screw and E-clip combination effective for gear stability?
The drive gear ARA311003 Arrma threaded set-screw hole and E-clip for shaft stability includes a precision-threaded M4 x 4mm set screw that locks the gear securely onto the motor shaft. This prevents slippage and maintains alignment during operation. The 3.2mm E-clip adds a secondary layer of retention, securing the gear axially and preventing movement along the shaft. Together, these components ensure that the gear remains firmly in place, even under intense driving conditions.
Is the Arrma ARA311003 precision-cut 20T pinion gear suitable for high-performance RC setups?
Absolutely. The Arrma ARA311003 precision-cut 20T pinion gear is designed for durability and consistent performance in high-speed RC environments. Its steel composition resists deformation and wear, while the precision-cut teeth maintain stable engagement with spur gears. This makes the gear ideal for brushless motor systems and vehicles that operate under high torque loads. Whether you're racing on-road or bashing off-road, this gear delivers dependable output and drivetrain control.
Why is the Arrma ARA311003 steel RC motor pinion gear an affordable upgrade?
For RC hobbyists seeking a cost-effective performance boost, the affordable ARA311003 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 both casual and competitive drivers.
In summary, the Arrma ARA311003 20T 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 ARA311003 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: ARA311003
- Product Type: Arrma ARA311003 20T 0.8Mod Safe-D5 pinion gear, Arrma ARA311003 steel RC motor pinion gear, Arrma ARA311003 precision-cut 20T pinion gear, Pinion gear ARA311003 Arrma wide tooth profile for smooth operation and steel durability, Drive gear ARA311003 Arrma threaded set-screw hole and E-clip for shaft stability
- Product Colour: Black
Dimensions and Weight
- Tooth count: 20T for enhanced torque delivery and balanced speed in RC drivetrain systems
- Module pitch: 0.8Mod for compatibility with standard RC spur gears
- Motor shaft diameter compatibility: 0.5 cm (5 mm) for secure Safe-D5 fitment
- Set screw size: 0.4 cm x 0.4 cm (M4 x 4 mm) for precise locking and retention
- E-clip size: 0.32 cm (3.2 mm) for axial stability on motor shaft
- Weight: optimised steel mass for efficient power transfer and reduced 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 20T 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.
