ARRMA Pinion Gear 20T 0.8 Mod 5mm Bore for 4x4 BLX 3S Z-AR310876

• Manufacturer: ARRMA
• Model Number: Z-AR310876
• EAN: 5052127030465
• Product Type: Pinion Gear
• Tooth Count: 20T
• Module Specification: 0.8 Mod
• Gear Pitch: 32DP
• Bore Size: 5mm
• Compatibility: ARRMA 4x4 BLX 3S
• Material: Hard-wearing material

Overview

The ARRMA Pinion Gear 20T 0.8 Mod is an essential replacement component designed specifically for ARRMA 4x4 BLX 3S RC vehicles. This precision-engineered pinion gear is manufactured to exacting standards by ARRMA, one of the most respected names in high-performance RC cars and trucks in the UK. Whether you're a seasoned RC enthusiast running competitive machines or a weekend basher pushing your vehicle to the limit, having quality replacement gears on hand is crucial for maintaining peak performance and reliability.

Pinion gears are critical drivetrain components that directly affect your RC car's acceleration, top speed, and overall performance characteristics. The 20-tooth configuration of this gear provides an optimal balance for 4x4 BLX 3S platforms, delivering responsive handling and reliable power delivery across a wide range of driving conditions. If you're looking for RC parts in the UK that genuinely stand up to the rigours of fast and extreme driving, ARRMA components like this pinion gear represent industry-leading quality and durability.

This particular gear is engineered from hard-wearing material that ensures perfect gear operation even when the action is fast and extreme. Whether you're replacing a worn gear after extensive use or upgrading your drivetrain setup, this 0.8 module pinion gear offers the reliability and performance that serious RC hobbyists demand. The 5mm bore fits directly into ARRMA's proven motor and transmission systems, making installation straightforward for anyone with basic RC maintenance knowledge.

Key Features

• 20-Tooth Configuration — The 20T tooth count is specifically designed for 4x4 BLX 3S vehicles, providing the ideal balance between acceleration and top speed for both competitive racing and recreational bashing on RC tracks and off-road terrain across the UK.
• 0.8 Module Specification — This module size ensures perfect meshing compatibility with the corresponding spur gear in your ARRMA transmission, guaranteeing smooth, efficient power transfer and minimising wear patterns that could compromise performance.
• Hard-Wearing Material Construction — Manufactured from tough, durable material, this pinion gear is engineered to withstand the extreme stresses of high-performance RC driving, whether you're running fast, aggressive laps or pushing your vehicle through challenging terrain.
• 5mm Bore — The precisely machined 5mm bore ensures a perfect fit on ARRMA motor shafts, providing secure engagement without slippage and maintaining the mechanical integrity of your drivetrain during intense driving sessions.
• 32DP Gear Pitch — The 32 diametral pitch rating confirms this gear's compatibility with ARRMA 4x4 BLX 3S systems and ensures optimal gear engagement with matching components in your transmission.
• ARRMA OEM Quality — As an official ARRMA component, this pinion gear meets the manufacturer's exacting quality standards and represents the same engineering integrity found in new ARRMA vehicles, giving you confidence in reliability and longevity.

Technical Performance

The ARRMA Pinion Gear 20T 0.8 Mod represents precision engineering at its finest. With a 5mm bore and 32DP gear pitch specification, this component integrates seamlessly into ARRMA's 4x4 BLX 3S drivetrain architecture. The gear's hard-wearing material formulation has been specifically selected to endure the high-torque demands of brushless electric powertrains running on 3S LiPo battery systems. The 20-tooth count provides the optimal gear ratio for these vehicles, offering responsive acceleration whilst maintaining top-end speed capability. Whether you're operating your RC vehicle on a competitive track, bashing through open fields, or tackling challenging off-road courses, this pinion gear delivers consistent performance and reliable engagement with your spur gear. The engineering tolerances are held to exacting standards to ensure smooth, noise-free operation and minimal mechanical loss in the drivetrain. For any RC enthusiast running ARRMA 4x4 BLX 3S vehicles who demands genuine OEM parts and factory-spec reliability, this pinion gear is an essential upgrade or replacement component. The hard-wearing material construction resists the typical wear patterns associated with intensive RC driving, ensuring longer intervals between replacements and better overall drivetrain longevity.

What's in the Box

• ARRMA Pinion Gear 20T 0.8 Mod

Frequently Asked Questions

• What is a pinion gear and why does my RC vehicle need one? — A pinion gear is a small toothed gear that meshes with a larger spur gear in your RC vehicle's transmission. It transfers power from the motor to the wheels and directly influences your vehicle's acceleration and top speed. Over time, pinion gears can wear down from use, and having quality replacement options like this ARRMA component ensures your vehicle maintains peak performance and reliability.
• Is this pinion gear compatible with all ARRMA vehicles? — No, this 20T 0.8 Mod pinion gear is specifically designed for ARRMA 4x4 BLX 3S vehicles. The 20-tooth count, 0.8 module specification, and 5mm bore are matched to these particular models. Always check your vehicle's documentation to ensure you're selecting the correct gear specification before ordering.
• What does 0.8 Mod mean and why does it matter? — MOD (Module) refers to the size specification of the gear teeth. The 0.8 module size must match your vehicle's spur gear to ensure proper meshing and smooth operation. Using an incorrect module gear can result in poor power delivery, excessive noise, and premature wear to both gears.
• How often should I replace my pinion gear? — Pinion gear replacement frequency depends on how often you use your RC vehicle and how aggressively you drive it. Regular inspection is recommended; signs of wear include visible chipping, stripped teeth, or noisy drivetrain operation. Many racers and bashers carry spare pinion gears as essential spares for competitions and track days.
• What is the difference between 20T, 17T, and other tooth count options? — Different tooth counts change your vehicle's gear ratio. A lower tooth count (like 17T) provides higher top speed but slower acceleration, whilst a higher tooth count (like 20T) offers quicker acceleration and better low-end torque. The 20T specification suits most 4x4 BLX 3S users seeking balanced all-around performance.
• Can I use this pinion gear with a standard brushless ESC and 3S LiPo battery? — Yes, this pinion gear is designed specifically for ARRMA 4x4 BLX 3S vehicles, which utilise brushless motors and ESCs rated for 3S LiPo battery systems. It pairs perfectly with ARRMA's integrated brushless powertrains.
• Is this an OEM ARRMA part or an aftermarket clone? — This is a genuine OEM ARRMA component manufactured to the brand's exacting specifications. Purchasing authentic ARRMA parts ensures compatibility, reliability, and warranty protection, unlike cheaper aftermarket alternatives that may compromise quality.

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 ARRMA Pinion Gear 20T 0.8 Mod: 4x4 BLX 3S Z-AR310876 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.