Traxxas 13-Tooth HD Pinion Gear 32-Pitch 3mm Bore RC Spare TRX7777

Overview

The Traxxas Pinion Gear Differential, 13-T (Front) TRX7777 is an essential upgrade component for enthusiasts looking to fine-tune the performance of their Traxxas X-MAXX or compatible RC model. Whether you're a seasoned RC car UK competitor or a weekend basher, this precision-engineered pinion gear allows you to adjust your vehicle's gear ratio to achieve the perfect balance between acceleration and top speed for different running conditions. This is a genuine Traxxas spare part, manufactured to the highest standards and designed to work seamlessly with your existing drivetrain.

Pinion gears are critical components in any RC car's drivetrain, and choosing the correct tooth count is fundamental to optimising your model's performance. The 13-tooth configuration offers a specific gear ratio that suits particular racing or bashing scenarios, making this an ideal choice for drivers looking to experiment with different setups without investing in an entirely new RC car. Traxxas pinion gears are trusted by RC enthusiasts across the UK and worldwide, and this 13-tooth variant is no exception. By investing in genuine Traxxas spare parts like this differential pinion gear, you ensure compatibility, reliability and longevity in your RC hobby.

Whether you're upgrading your brushless RC car or preparing for competitive racing, the TRX7777 pinion gear delivers the quality and precision you'd expect from Traxxas. This is a straightforward replacement or upgrade component that requires minimal installation knowledge, making it suitable for both experienced modellers and those newer to the RC hobby who understand the basics of gear ratio tuning.

Key Features

• Heavy-Duty Construction — Machined from hardened steel, this pinion gear is built to withstand the demands of high-performance RC driving and maintain its integrity through countless hours of operation, ensuring you get exceptional longevity from your investment.
• 13-Tooth Design — The 13-tooth configuration provides a specific gear ratio that allows you to fine-tune your model's performance characteristics, helping you find the sweet spot between acceleration response and top speed depending on your driving style and terrain.
• 32-Pitch Standard — This pinion gear conforms to the widely-used 32-pitch standard, ensuring compatibility with Traxxas drivetrain components and making it easy to source complementary gears if you decide to experiment further with your setup.
• 3mm Motor Shaft Bore — The 3mm bore fits directly onto standard motor shafts found in Traxxas models, providing a secure and reliable connection that transmits power efficiently without slippage or wobble.
• Includes Set Screw — Each pinion gear comes complete with a set screw, which fastens the gear securely to your motor shaft and prevents unwanted rotation or gear slip during aggressive driving sessions.
• Performance Tuning Capability — By changing your pinion gear, you can adjust the overall drivetrain ratio of your RC car, making it possible to optimise performance for different conditions such as racing on smooth tracks, off-road bashing, or speed-focused runs.

Technical Performance

The Traxxas Pinion Gear Differential, 13-T (Front) TRX7777 represents precision engineering at its finest. Manufactured from hardened steel through a machining process that ensures consistency and durability, this pinion gear is designed to handle the demanding requirements of modern RC cars, including brushless electric models that deliver significant power to the drivetrain. The 32-pitch specification is the industry standard for many Traxxas vehicles, and the 3mm bore accommodates the motor shafts found in a wide range of Traxxas models. The hardened steel construction means the gear teeth resist wear and maintain their profile even under continuous use, which is essential for smooth power transmission and long-term reliability. Whether you're running a high-torque brushless motor or experimenting with gearing combinations, this pinion gear performs consistently across various driving conditions. The inclusion of a set screw ensures that the gear remains firmly attached to your motor shaft, preventing the slippage that can occur with vibration during hard cornering, acceleration and deceleration cycles. For RC enthusiasts in the UK and beyond, understanding gear ratios is fundamental to extracting maximum performance from your model, and this Traxxas genuine spare part is a critical component in that optimisation process.

What's in the Box

• 13-Tooth HD Pinion Gear (32-Pitch)
• Set Screw for secure installation

Frequently Asked Questions

• What does changing the pinion gear do to my RC car's performance? — Changing your pinion gear adjusts the overall gear ratio of your drivetrain. A higher tooth count (more teeth) creates a lower gear ratio, providing more torque and acceleration but lower top speed. A lower tooth count (fewer teeth) creates a higher gear ratio, offering higher top speed but potentially less initial acceleration. The 13-tooth gear in this package is ideal for setups where you want to find a balanced middle ground or increase top speed compared to stock configurations.
• Is the TRX7777 pinion gear compatible with my Traxxas model? — This 13-tooth pinion gear with 32-pitch and 3mm bore is designed for the Traxxas X-MAXX front differential. However, Traxxas produces many models with varying drivetrain specifications. Always consult your vehicle's owner's manual to confirm the correct pinion gear tooth count and specifications recommended for your specific model before purchasing. Using the wrong gear can result in poor performance or drivetrain damage.
• Can beginners use this pinion gear for RC car tuning? — Yes, pinion gears are one of the most accessible performance tuning modifications for RC enthusiasts of any skill level. Installation is straightforward—you simply remove the old pinion gear, slide the new one onto your motor shaft, and tighten the set screw. However, understanding how gear ratios affect performance takes a bit of learning. If you're new to RC cars, we recommend consulting your vehicle's manual and perhaps speaking with experienced RC enthusiasts who can guide you on the best gearing for your driving style and conditions.
• What is the difference between pinion gears with different tooth counts? — The tooth count directly affects your vehicle's gear ratio. Common pinion gear sizes for Traxxas models range from 12-teeth through to 16-teeth or higher, each affecting the final drive ratio differently. A 12-tooth pinion would provide higher top speed than this 13-tooth gear, whilst a 14 or 15-tooth pinion would offer more acceleration and torque at the cost of lower maximum speed. Your choice depends on whether you're primarily interested in speed runs, acceleration off-the-line, or a balanced setup for mixed driving conditions.
• Is this a genuine Traxxas part? — Yes, the TRX7777 is an official Traxxas spare part, manufactured to Traxxas specifications and quality standards. When you purchase from authorised Traxxas retailers like RC Model Shop, you can be confident you're receiving a genuine component backed by Traxxas quality assurance. Counterfeit parts can cause compatibility issues and poor performance, so always buy from recognised dealers.
• What tools do I need to install this pinion gear? — Installation requires very few tools—typically just an appropriately-sized hex wrench or Allen key to tighten the set screw. Some RC enthusiasts prefer to use a slight amount of threadlocker on the set screw for extra security, though this is optional. If you're unfamiliar with working on RC cars, the installation process is simple enough that you can find instructional videos online, or your local RC hobby shop can often install it for you.

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 Traxxas Pinion Gear Differential, 13-T (Front) TRX7777 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.