TRX9586X

Overview

Give your Traxxas Sledge the ultimate driveline upgrade with these Traxxas Differential output cups, centre (hardened steel, heavy duty). Whether you're a serious RC enthusiast looking to enhance your 1/8 scale monster truck's performance or a weekend basher who demands reliability, these heavy-duty centre differential output cups represent a premium investment in your RC car's longevity and strength. Built from hardened steel and engineered for maximum durability, these output cups are designed to handle the demands of aggressive driving, whether you're bashing across rough terrain or pushing your Sledge to its limits on the track. If you own a Traxxas Sledge Belted 1/8 4WD Brushless Electric Monster Truck in any colour variant, this is a genuine OEM upgrade that will transform your driveline's reliability.

The centre differential is one of the most critical components in any high-performance RC vehicle, and the stock components can struggle under heavy use or aggressive driving conditions. These hardened steel output cups are purpose-built to solve that problem, offering significantly increased strength and durability compared to standard parts. They're the perfect choice for UK RC hobbyists who take their vehicles seriously and want to protect their investment. Whether you've already experienced differential wear on your Sledge or you're being proactive about preventative maintenance, these cups will give you peace of mind and extended service life from your transmission system.

RC enthusiasts across the UK have long trusted Traxxas for quality and performance, and these differential output cups are no exception. They're manufactured to the highest standards and represent genuine OEM Traxxas parts, not aftermarket alternatives. If you're searching for 'RC car parts UK', 'Traxxas Sledge upgrades', or 'monster truck transmission parts', you've found exactly what you need.

Key Features

• Hardened Steel Construction — These output cups are manufactured from hardened steel rather than standard material, which significantly increases their resistance to wear, deformation and failure under heavy load. This matters because your centre differential experiences enormous stress during acceleration, cornering and braking, and hardened steel ensures these components maintain their integrity even after hundreds of runs.
• Heavy-Duty Design — The heavy-duty engineering means these cups are built specifically for demanding use cases, not just casual weekend bashing. If you're the type of RC driver who pushes your Sledge hard and expects your parts to keep up, these heavy-duty cups are designed with you in mind.
• Standard Driveshaft Compatibility — These output cups work seamlessly with standard centre driveshafts, meaning you don't need to upgrade your entire transmission system to benefit from improved durability. They're a bolt-in upgrade that maintains full compatibility with your existing Sledge setup.
• Compatible with Upgraded CV Driveshafts — If you've already invested in the upgraded 9655X hardened steel centre CV driveshafts, these output cups are fully compatible and will work together as part of a complete high-strength driveline system. This gives you the flexibility to upgrade components gradually as your budget allows.
• Includes Drive Pins — Each pair of output cups includes the necessary 2.5x12mm drive pins (2 pins total), so you have everything you need for installation right out of the box without hunting for additional parts.
• Sold in Pairs — The package includes two output cups, giving you a complete left and right set for your centre differential. This is exactly what you need for a full differential rebuild or upgrade on your Sledge.
• Genuine OEM Traxxas Part — As an official Traxxas component, you're getting authentic engineering and quality assurance. This is the same part used in factory Traxxas builds and recommended by Traxxas engineers themselves.

Technical Performance

The centre differential output cup is a precision-engineered component that forms a critical part of your Sledge's power transmission system. These hardened steel cups are specifically designed to handle the torque and rotational forces generated by the brushless electric motor and gearbox assembly in your 1/8 scale monster truck. The hardening process applied to the steel increases its hardness and wear resistance significantly, which is essential because these cups experience constant contact with the drive pins under load. When you're driving at high speeds, cornering aggressively, or jumping your Sledge, the differential output cups must maintain their precise geometry and resist deformation, otherwise you'll experience play in the driveline, noise, vibration and eventual component failure. The inclusion of the 2.5x12mm drive pins ensures you have the correct interface between the output cups and your driveshafts, maintaining the integrity of the entire transmission assembly. For UK RC enthusiasts who demand reliability and performance from their brushless RC monsters trucks, these hardened steel cups represent a significant upgrade from stock components, extending service intervals and improving overall driveline responsiveness.

What's in the Box

• Differential output cups, centre (hardened steel, heavy duty) — quantity 2
• 2.5x12mm drive pins — quantity 2

Frequently Asked Questions

• What is a centre differential output cup and why would I need to upgrade it? — The centre differential output cup is the component that connects your driveshaft to the differential, transferring power from the motor and gearbox to the wheels. The stock cups on many RC vehicles are made from standard steel or plastic and can wear out, crack or deform under heavy use. Upgrading to hardened steel cups dramatically increases durability and maintains the precision fit of your driveline, which translates to better performance, less noise, and extended component life. If you've been bashing your Sledge hard or you've noticed play or clunking in the transmission, these cups are an essential upgrade.
• Will these output cups fit my Traxxas Sledge? — Yes, these hardened steel output cups are designed specifically for the Traxxas Sledge Belted 1/8 4WD Brushless Electric Monster Truck. They're compatible with all colour variants of the Sledge (blue, orange, green, and red) and are genuine OEM Traxxas parts. They work with standard centre driveshafts and are also compatible with the optional 9655X hardened steel centre CV driveshafts if you've upgraded those as well.
• Do I need any other parts to complete this upgrade? — These output cups include the necessary drive pins, so you have everything you need for installation. However, you'll need basic RC tools like hex drivers and potentially a differential rebuild kit or grease depending on whether you're doing a full maintenance service or just replacing the cups. If your driveshafts are damaged, you may also want to replace those, but the output cups themselves are standalone upgrades.
• Are these genuine Traxxas parts or aftermarket alternatives? — These are genuine OEM Traxxas parts, manufactured to the exact same specifications used in factory Traxxas builds. The part number TRX9586X is the official Traxxas identifier, and they're supplied with authentic packaging and documentation. As an authorised Traxxas retailer, RC Model Shop only stocks genuine parts, never counterfeit or grey-market alternatives.
• How much stronger are these compared to standard differential output cups? — These cups are made from hardened steel rather than standard materials, which means they have significantly increased wear resistance, hardness, and resistance to deformation. The hardening process creates a metallurgical structure that can withstand repeated stress and load cycles far better than untreated steel or plastic components. While we don't have exact comparative strength figures, the heavy-duty specification indicates these are engineered for high-performance use on vehicles like the Sledge that are driven hard and frequently.
• Can I use these output cups if I still have stock driveshafts? — Absolutely. These hardened steel output cups are fully compatible with standard centre driveshafts, so you don't need to upgrade your entire transmission system. They're a direct bolt-in replacement or upgrade component that will immediately improve your differential's durability regardless of which driveshaft setup you're running.

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 Differential output cup, centre (hardened steel, heavy duty) (2)/ 2.5x12mm pin (2) TRX9586X 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.