Overview
The Traxxas Portal drive input Rear (machined) (left or right) (requires #8063 Rear axle) TRX8065 is a heavy-duty replacement component engineered for serious RC crawler enthusiasts who demand maximum durability and performance from their TRX-4 models. This precision-machined rear portal drive input gear is designed to withstand the extreme stresses of aggressive trail driving, rock crawling, and off-road adventures. Whether you're a seasoned RC competitor running a TRX-4 in challenging terrain or a dedicated weekend basher pushing your vehicle to its limits, this upgrade component delivers the reliability and strength you need to keep your RC car UK-ready for years of intense use.
Built from premium materials using advanced machining techniques, the TRX8065 rear portal drive input gear represents Traxxas's commitment to providing aftermarket parts that exceed OEM specifications. This is the ideal replacement if your original drive input has suffered wear, or an essential upgrade if you've experienced breakages during demanding rock crawling sessions. Compatible with an extensive range of Traxxas TRX-4 models including the Chevrolet K10 Cheyenne High Trail Edition, Ford F-150 Ranger XLT, 1972 Chevrolet K5 Blazer, Nissan Pathfinder SE-V6, 2021 Ford Bronco, and the Defender 4WD variants, this component ensures your crawler maintains peak performance and reliability across diverse driving conditions.
For RC enthusiasts in the UK looking for genuine Traxxas spares and tune-up options, the TRX8065 represents professional-grade engineering at a competitive price point. Its availability as either left or right side configuration means you can source exactly what you need for your specific repair or upgrade project, making this a versatile addition to any TRX-4 owner's spare parts collection.
Key Features
- Heavy-duty machined steel construction — The rear portal drive input gear is machined from high-grade 4340 Chromoly steel, a premium alloy specifically chosen for its exceptional strength-to-weight ratio and resistance to impact damage, making it far more durable than standard mild steel alternatives and capable of handling the extreme torque loads generated by serious rock crawling and trail driving.
- Maximum strength and durability — The 4340 Chromoly steel material delivers superior hardness and toughness, ensuring this component can withstand repeated stress cycles, sudden impact loads, and the demanding conditions found in competitive RC crawling without deformation or premature failure.
- Flexible left or right configuration — This single part number works for both the left and right side of your TRX-4 rear axle assembly, offering flexibility in your repair and upgrade strategy whilst simplifying inventory management for retailers and collectors.
- Precision machining — Each gear is machined to exact tolerances, ensuring perfect fit and mesh with mating components, which is critical for smooth power transmission and longevity of the entire drivetrain system in your RC crawler.
- Direct compatibility with TRX-4 platform — Designed to work seamlessly with the Traxxas #8063 rear axle shaft, this component integrates perfectly into the proven TRX-4 drivetrain architecture, requiring no modification or adaptation.
- Professional-grade upgrade component — This is the genuine Traxxas OEM replacement part, not an aftermarket alternative, guaranteeing authentic quality and perfect fit that matches factory specifications.
Technical Performance
The TRX8065 rear portal drive input gear represents the pinnacle of machined RC component engineering, manufactured from high-grade 4340 Chromoly steel specifically selected for its superior mechanical properties. This premium alloy steel offers significantly greater tensile strength and impact resistance compared to standard materials, making it the optimal choice for applications where extreme loads and repetitive stress are inevitable. The machining process ensures dimensional accuracy and surface finish quality that allows for optimal gear mesh contact, minimising friction losses and extending component lifespan. When used in conjunction with the required #8063 rear axle shaft, this drive input gear delivers reliable power transmission from the differentials to the wheels whilst maintaining the stiffness and precision that RC crawling demands. The heavy-duty design is specifically engineered to handle the torque multiplication effects of portal gearboxes, where mechanical advantage is critical for extreme terrain navigation. Whether you're conquering rocky obstacles, traversing steep inclines, or executing technical climbs at low speeds with maximum traction, this machined steel component provides the foundation for reliable, consistent performance. Its compatibility across the entire TRX-4 family—from Chevrolet models to Ford Ranger, K5 Blazer, Nissan Pathfinder, Ford Bronco, and Defender variants—demonstrates its versatility and the consistent engineering standards Traxxas applies across their crawler platform.
What's in the Box
- 1x Traxxas TRX8065 Portal drive input gear, rear (machined)
What You Need to Complete
- Traxxas #8063 rear axle shaft (required for installation)
- Compatible TRX-4 model (Chevrolet K10 Cheyenne High Trail Edition, Ford F-150 Ranger XLT, 1972 Chevrolet K5 Blazer, 1979 Chevy Blazer, Nissan Pathfinder SE-V6, 2021 Ford Bronco, or TRX-4 Defender)
- Basic RC tools for drivetrain maintenance and assembly
Frequently Asked Questions
- Is the Traxxas TRX8065 a direct replacement for my TRX-4 rear portal drive input gear? — Yes, this is the genuine Traxxas OEM component (part number 8065) designed to replace the factory rear portal drive input gear on any compatible TRX-4 model. It works with the #8063 rear axle shaft and requires no modification to install, making it a true plug-and-play replacement.
- What models does the TRX8065 fit? — The TRX8065 is compatible with a wide range of Traxxas TRX-4 models including the Chevrolet K10 Cheyenne High Trail Edition (available in Red, Metallic Blue, Black, and Metallic Copper), Ford F-150 Ranger XLT High Trail Edition (available in Brown, Blue, and Black), 1972 Chevrolet K5 Blazer High Trail Edition (available in Blue and Red), 1979 Chevy Blazer with Clipless Body (available in Black and Red), Nissan Pathfinder SE-V6 3S 4x4 RTR (available in Red and Silver), 2021 Ford Bronco (available in White, Red, Orange, and Black), TRX-4 Defender 4WD RTR with Clipless Mounting (available in Red, Silver, Green, and Sand), and TRX-4 Sport models with various configurations.
- Why do I need the #8063 rear axle shaft with the TRX8065? — The TRX8065 portal drive input gear is specifically designed to mesh with and rotate around the #8063 rear axle shaft. This shaft is essential as it provides the structural foundation for the gear to mount onto, and together they form the critical portal drive system that delivers power to the rear wheels with the mechanical advantage needed for extreme crawling.
- Is this part suitable for beginners? — The TRX8065 is an aftermarket component designed for users with some RC mechanical knowledge, as installation involves working with drivetrain components. However, any RC enthusiast with basic assembly skills and proper tools can install this part. If you're new to RC maintenance, we recommend consulting your TRX-4 manual or seeking guidance from experienced RC community members.
- What is 4340 Chromoly steel and why is it used in this gear? — 4340 Chromoly steel is a high-strength alloy that combines chromium and molybdenum to create superior material properties including excellent tensile strength, impact resistance, and fatigue resistance. Traxxas uses this premium material in the TRX8065 specifically because portal drive gears experience extreme stress concentrations, and 4340 steel resists deformation and breakage far better than standard materials, ensuring your investment in this component pays dividends through extended lifespan and reliability.
- Can I use the TRX8065 for both left and right sides? — Yes, the TRX8065 is designed to work on either the left or right side of your TRX-4 rear axle assembly, offering flexibility when you need replacements or upgrades for either side or both sides of your vehicle.
- What is the difference between the machined TRX8065 and other portal drive input gears? — The TRX8065 is specifically machined from high-grade 4340 Chromoly steel, which delivers superior strength and durability compared to cast alternatives. The precision machining process ensures exact dimensional tolerances and superior surface finish quality, which translates to better gear mesh characteristics, reduced friction, and extended component life.
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 Portal drive input Rear (machined) (left or right) (requires #8063 Rear axle) TRX8065 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.
- Brand: Traxxas
- Part Number: TRX8065
- Product Type: Portal drive input gear, rear
- Material: High-grade 4340 Chromoly steel
- Finish: Machined
- Configuration: Left or right side
- Required Component: #8063 rear axle shaft
- Compatible Models: TRX92056-4-RED (Chevrolet K10 Cheyenne High Trail Edition Red), TRX92056-4-BLUE (Chevrolet K10 Cheyenne High Trail Edition Metallic Blue), TRX92046-4-BRWN (Ford F-150 Ranger XLT High Trail Edition Brown), TRX92086-4-BLUE (1972 Chevrolet K5 Blazer High Trail Edition Blue), TRX82276-4-BLK (1979 Chevy Blazer Black), TRX82216-4-R6 (TRX-4 Unassembled Chassis Kit), TRX110056-4-RED (Nissan Pathfinder SE-V6 3S Red), TRX92056-4-BLK (Chevrolet K10 Cheyenne High Trail Edition Black), TRX92056-4-COPR (Chevrolet K10 Cheyenne High Trail Edition Metallic Copper), TRX92046-4-BLUE (Ford F-150 Ranger XLT High Trail Edition Blue), TRX92086-4-RED (1972 Chevrolet K5 Blazer High Trail Edition Red), TRX92046-4-BLK (Ford F-150 Ranger XLT High Trail Edition Black), TRX82276-4-RED (1979 Chevy Blazer Red), TRX110056-4-SLVR (Nissan Pathfinder SE-V6 3S Silver), TRX92076-4-WHT (2021 Ford Bronco White), TRX92076-4-RED (2021 Ford Bronco Red), TRX92076-4-ORNG (2021 Ford Bronco Orange), TRX92076-4-BLK (2021 Ford Bronco Black), TRX82256-4-RED (Defender 4WD RTR Red), TRX82256-4-SLVR (Defender 4WD RTR Silver), TRX82256-4-GRN (Defender 4WD RTR Green), TRX82256-4-SAND (Defender 4WD RTR Sand), TRX82234-4-ORNG (TRX-4 Sport Deep-Terrain Traxx Orange), TRX82224-4-GRAY (TRX-4 Sport Gray), TRX82044-4-BLUE (TRX-4 Sport Hightrail Edition Metallic Blue), TRX82224-4-BLUE (TRX-4 Sport Blue), TRX88086-84-BLK (TRX-6 Ultimate RC Hauler Black)
- Tune-Up Type: Transmission
- EAN: 0020334806505
- Construction: Precision-machined gear
- Strength Rating: Heavy-duty
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