Traxxas Ring Gear Differential Pinion Rear 47-Tooth 12-Tooth TRX10779X

Overview

The Traxxas RING GEAR DIFF/PINION REAR TRX10779X is an essential drivetrain component for RC enthusiasts maintaining or upgrading their Traxxas mini RC cars. This genuine OEM replacement part is engineered to deliver consistent performance and reliability, making it an ideal choice for RC car UK hobbyists who demand quality spare parts for their fleet. Whether you're a seasoned RC competitor or a weekend basher enjoying the thrills of ready to run RC vehicles, having access to genuine Traxxas differential gears ensures your vehicle performs at its peak.

This rear differential assembly combines a 47-tooth ring gear with a 12-tooth planetary pinion gear, creating a precisely engineered gear ratio that optimises torque delivery and handling characteristics across a range of driving conditions. The component is specifically designed for the Traxxas Mini Maxx BL-2S and Traxxas Mini XRT VXL-3S platforms, two of the most popular mini 4WD RC vehicles available in the UK today. By choosing genuine Traxxas parts, you're investing in components that have been tested and validated by the manufacturer, ensuring compatibility, durability and optimal performance with your RC model.

RC car maintenance and upgrades are crucial to keeping your vehicles performing at their best. The differential is one of the most important drivetrain components, controlling how power is distributed to the wheels during acceleration, cornering and deceleration. Over time, gears can wear, strip or break through intense use or accidental impact. Having a reliable replacement differential like the TRX10779X on hand means you can get back to racing or bashing quickly, without compromising on quality or risking further damage to your RC vehicle's drivetrain.

Key Features

• 47-Tooth Ring Gear — The larger ring gear provides the primary gear reduction in the differential, multiplying the engine's torque output to deliver impressive acceleration and pulling power. This larger tooth count is optimised for the Mini Maxx BL-2S and Mini XRT VXL-3S platforms, ensuring smooth power delivery and efficient energy transfer from motor to wheels.
• 12-Tooth Planetary Pinion Gear — The smaller pinion gear works in concert with the ring gear to create the differential's 12:47 gear ratio, enabling precise torque distribution between the left and right wheels. This planetary design allows for intelligent power splitting during turns, maximising traction and handling precision on various terrain types.
• 12:47 Gear Ratio — This specific ratio is carefully engineered by Traxxas to deliver the ideal balance of acceleration, top speed and pulling power for mini-scale 4WD RC vehicles. The ratio ensures your Mini Maxx or Mini XRT has responsive performance across grass, dirt, gravel and pavement surfaces commonly encountered in UK RC parks and private land.
• Genuine OEM Traxxas Component — This is an authentic Traxxas replacement part manufactured to the same exacting standards as the original equipment. Genuine parts guarantee perfect fitment, longevity and performance, eliminating compatibility concerns and ensuring your RC car continues to perform as intended by the designer.
• Rear Differential Application — Specifically engineered for rear axle installation, this component is critical to the vehicle's overall handling dynamics and traction characteristics. The rear differential works alongside the front differential to provide balanced power distribution across all four wheels during acceleration and cornering.
• High-Quality Materials and Construction — Traxxas differentials are constructed from precision-engineered materials designed to withstand the stresses and impacts typical of RC car operation. The gears are manufactured with tight tolerances to ensure smooth engagement and minimal backlash, resulting in efficient power transmission and reduced wear over time.

Technical Performance

The Traxxas RING GEAR DIFF/PINION REAR TRX10779X represents precision engineering at its finest, combining the 47-tooth ring gear and 12-tooth planetary pinion gear into a compact, efficient differential assembly. This gear pairing creates a 12:47 reduction ratio that has been specifically calibrated for the Mini Maxx BL-2S brushless RC platform and the Mini XRT VXL-3S brushless racing truck, both wildly popular in the UK RC community. The differential's design ensures optimal weight distribution, minimal friction losses and maximum power delivery to the wheels, critical factors in the performance-oriented world of mini 4WD RC racing and recreational driving. The planetary pinion design allows the differential to function smoothly during straight-line acceleration whilst intelligently managing torque distribution during high-speed cornering, a feature that significantly enhances vehicle stability and driver confidence. Whether you're navigating tight technical courses, open field racing or aggressive urban bashings, this differential maintains the precise engineering tolerances that Traxxas is renowned for, ensuring your RC car responds predictably and performs reliably. The component's robust construction means it can handle the rigorous demands of both casual weekend driving and competitive racing scenarios, making it an excellent investment for anyone serious about keeping their Traxxas mini RC vehicle in peak condition.

What's in the Box

• Ring gear, differential, 47-tooth
• Pinion gear, differential, 12-tooth (planetary)

Compatible With

• Traxxas Mini Maxx BL-2S (all colours: Black, Orange, Green, Blue)
• Traxxas Mini XRT VXL-3S (all colours: Red, Blue, Green, Orange)

Frequently Asked Questions

• Which Traxxas RC vehicles is the TRX10779X compatible with? — The TRX10779X rear differential assembly is specifically designed for the Traxxas Mini Maxx BL-2S and Traxxas Mini XRT VXL-3S platforms. These are both high-performance mini-scale 4WD brushless RC vehicles, and this differential is the correct rear axle component for both models. You can easily identify which model you own by checking your vehicle's documentation or the model designation printed on the chassis. This differential will not fit other Traxxas models or scales, so it's crucial to verify compatibility before ordering.
• When do I need to replace my RC differential? — You may need to replace your differential for several reasons. If you've crashed hard and suspect drivetrain damage, if your vehicle exhibits symptoms like pulling to one side, binding during turns, or unusual grinding sounds from the rear axle, a differential replacement may be necessary. Additionally, if you've been running your RC vehicle intensively for extended periods, normal wear on the gears can accumulate, potentially leading to decreased performance or tooth stripping. Keeping a spare differential on hand is smart practice for active RC enthusiasts, ensuring you can get back on the track or bashing site quickly without downtime.
• Is this a genuine Traxxas part? — Yes, the TRX10779X is an original equipment manufacturer (OEM) part produced by Traxxas themselves, ensuring it meets the brand's stringent quality and durability standards. Genuine Traxxas parts are specifically engineered for perfect fitment and optimal performance with their vehicles, unlike aftermarket alternatives that may introduce compatibility issues or reliability concerns. By choosing genuine components from authorised retailers, you're guaranteeing your RC car receives parts that have been tested extensively and validated for use with your specific vehicle model.
• What is the gear ratio of this differential? — This differential assembly creates a 12:47 gear ratio, achieved through the combination of the 12-tooth planetary pinion gear and the 47-tooth ring gear. This ratio has been carefully engineered by Traxxas specifically for the Mini Maxx BL-2S and Mini XRT VXL-3S platforms, optimising the balance between acceleration, top speed and torque delivery for these mini-scale brushless RC vehicles. The ratio ensures responsive performance across various terrain types and driving conditions common to UK RC enthusiasts.
• How difficult is it to install this differential? — Installing a differential requires some mechanical knowledge and proper tools, particularly axle stands or RC-specific work stands, hex key sets, and potentially a small press for removing and installing the differential from the rear axle assembly. If you have experience servicing RC vehicles, the installation should be manageable by following the Traxxas instruction manual or service guide for your specific vehicle model. If you're new to RC maintenance, you might consider having your local RC shop perform the installation, ensuring proper assembly and alignment. Traxxas components are designed for user serviceability, so replacement is well within reach of most enthusiasts with basic mechanical aptitude.
• Will this improve my RC car's performance? — If you're replacing a worn, damaged or failed differential, you'll absolutely notice an improvement in performance, particularly in responsiveness, acceleration smoothness and cornering precision. If your current differential is in good condition, simply replacing it with an identical OEM part won't provide a performance increase, but it will ensure your vehicle maintains its design specifications. For actual performance upgrades, you'd want to explore different gearing options or aftermarket differential designs, though the TRX10779X is optimised for the vehicles it's designed for and represents peak performance for those platforms.
• Why buy genuine Traxxas parts instead of aftermarket alternatives? — Genuine Traxxas parts offer several distinct advantages. Firstly, they're engineered specifically for your vehicle by the manufacturer, guaranteeing perfect fitment and optimal performance. Secondly, they undergo rigorous quality control testing, ensuring consistency and reliability. Thirdly, using OEM parts protects your warranty and maintains your vehicle's resale value. Aftermarket parts, whilst often cheaper, may introduce compatibility issues, potential quality inconsistencies, or even cause damage to other drivetrain components if they're not manufactured to the same exacting tolerances. For a hobby where precision and reliability matter, genuine components are the smart choice.

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 RING GEAR DIFF/PINION REAR TRX10779X 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.