Overview
The Traxxas Spider gear shaft and spacer kit (TRX7783) is an essential drivetrain spare part designed for owners of Traxxas X-Maxx and XRT monster trucks and rock crawlers. This genuine Traxxas component set ensures your RC vehicle maintains optimal performance and reliability during intense off-road driving sessions. Whether you're a weekend basher pushing your brushless RC monster truck to the limit or a competitive racer demanding precision engineering, having quality replacement drivetrain components on hand is crucial for keeping your machine running smoothly and avoiding costly downtime.
This spare part kit is specifically engineered to fit a range of Traxxas 4WD models, including the legendary X-Maxx Belted brushless RTR in multiple colour options, the X-Maxx Ultimate, the X-Monster Chassis, and the XRT VXL-8S performance truck. If you own any of these premium RC vehicles and want to maintain them in peak condition, this spider gear shaft and spacer assembly provides the exact replacement parts you need. RC enthusiasts in the UK appreciate the reliability and authenticity that comes with genuine Traxxas spares, and this component is no exception.
Investing in quality OEM replacement parts like this spider gear shaft kit demonstrates a commitment to proper maintenance and longevity of your RC investment. Rather than risking performance degradation or potential damage from inferior aftermarket alternatives, choosing genuine Traxxas components guarantees compatibility, durability, and the performance characteristics your vehicle was engineered to deliver.
Key Features
- Complete Spider Gear Assembly Kit — This kit includes two precision-engineered spider gear shafts plus four spacer components, providing everything needed for a complete spider gear replacement or maintenance refresh on compatible Traxxas models, ensuring you have all necessary components in one convenient package.
- Genuine Traxxas OEM Component — As an authentic Traxxas replacement part, this spider gear shaft kit meets the exacting standards and specifications set by Traxxas engineers, guaranteeing perfect fit and compatibility with your X-Maxx or XRT vehicle without any modification required.
- Precision Ball Bearing Spacers — The four 16x23.5x0.5mm TW spacers included in this kit are engineered to maintain proper bearing preload and alignment within the differential assembly, critical for smooth power delivery and minimal drivetrain friction during high-speed driving and aggressive cornering.
- Wide Model Compatibility — This spider gear shaft kit works with multiple Traxxas 8S brushless monster truck and rock crawler models, making it a versatile spare part suitable for X-Maxx Belted, X-Maxx Ultimate, X-Monster, and XRT VXL-8S variants across all available colour options.
- Essential Maintenance Component — Spider gear shafts experience constant rotational stress during driving, making them prone to wear over extended use, particularly in competitive or high-intensity RC driving; this replacement kit allows you to restore differential function when wear occurs.
- Aftermarket Parts Insurance — By stocking this genuine Traxxas spare part, you eliminate the risk of project delays waiting for parts to arrive from distant suppliers, keeping your RC vehicle ready for action whenever inspiration strikes.
Technical Performance
The spider gear shaft assembly is a critical component within the differential mechanism of your Traxxas RC vehicle. This kit provides the exact OEM replacement shafts and spacers needed to maintain proper operation of the differential gearing system that allows your 4WD brushless monster truck or rock crawler to distribute power efficiently between the front and rear axles whilst enabling different wheel speeds during cornering. The precision engineering of genuine Traxxas components ensures that replacement parts maintain the same tolerances and material specifications as the originals, preserving the vehicle's handling characteristics, traction control, and overall driving dynamics. The 16x23.5x0.5mm TW spacers are dimensionally specific to Traxxas 8S vehicle platforms, maintaining correct bearing preload which is essential for minimising friction losses whilst preventing excessive play in the differential assembly. Built to the same rigorous standards as factory components, this spider gear shaft kit restores your vehicle to like-new condition, whether you're refreshing an aging X-Maxx or replacing worn components on a heavily-used competition XRT.
What's in the Box
- 2x Spider gear shafts
- 4x Spacers (16x23.5x0.5mm TW)
Frequently Asked Questions
- Which Traxxas models are compatible with the TRX7783 spider gear shaft kit? — This spider gear shaft and spacer kit is compatible with a wide range of Traxxas 4WD models, including the X-Maxx Belted 4WD Brushless RTR 8S Monster Truck (available in blue, orange, green, and red), the X-Maxx Ultimate (blue and green X variants), the X-Monster Chassis, and the XRT VXL-8S rock crawler (available in blue, green, black, and orange colours). If you own any of these Traxxas brushless RC vehicles, this kit provides the correct replacement parts for your model.
- What is a spider gear shaft and why would I need to replace it? — The spider gear shaft is a critical component of the differential assembly in your RC vehicle. It transfers rotational force and allows the differential to function properly, enabling your 4WD monster truck to distribute power between front and rear axles whilst accommodating different wheel speeds during cornering. Over time and with heavy use, these shafts can wear, bend, or break due to the extreme forces encountered during aggressive driving, high-speed bashing, and competition racing. When spider gear shafts wear, you may notice binding in the differential, loss of traction, or unusual drivetrain noises, making replacement necessary to restore proper performance.
- Are these genuine Traxxas parts or aftermarket alternatives? — The TRX7783 is a genuine Traxxas OEM spare part manufactured to the original specifications and tolerances set by Traxxas engineers. Using genuine Traxxas replacement components ensures perfect compatibility with your vehicle, maintains warranty coverage where applicable, and guarantees the same durability and performance as factory-original parts. Aftermarket alternatives may not meet the same engineering standards and could potentially cause fitment issues or premature wear.
- What are the 16x23.5x0.5mm TW spacers used for? — These precision spacers maintain correct bearing preload and alignment within the differential assembly. The specific dimensions (16mm inner diameter, 23.5mm outer diameter, 0.5mm thickness) are engineered to work with Traxxas 8S vehicle platforms, ensuring that bearings are neither too tight nor too loose. Proper spacer dimensions are essential for smooth differential operation, minimal friction, reliable traction control, and long component life.
- How often should I replace spider gear shafts on my Traxxas RC vehicle? — Spider gear shaft replacement is a maintenance item that depends on your driving style and frequency. Weekend bashers might go years without needing replacement, whilst competitive racers or drivers who regularly push their X-Maxx or XRT to extreme limits may need replacement every few seasons. Visual inspection of the shafts during regular maintenance can reveal wear, bending, or damage before problems develop, allowing you to proactively replace components before they fail.
- Can I install this spider gear shaft kit myself or do I need professional help? — Whilst differential work requires mechanical skill and the proper tools, experienced RC hobbyists with basic mechanical knowledge can typically perform spider gear shaft replacement themselves. However, the task does require disassembling the differential housing, removing old shafts, installing new shafts and spacers in the correct orientation, and reassembling the differential with proper bearing preload. If you're unfamiliar with differential service, consulting Traxxas service documentation or seeking assistance from experienced RC technicians is recommended to ensure proper installation.
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 Spider gear shaft (2 pcs) / spacers (4 pcs) / 16x23.5x.5mm TW (2 pcs) TRX7783 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.
- Manufacturer: Traxxas
- Part Number: TRX7783
- EAN: 0020334778307
- Spare Part Type: Drivetrain Spares
- Spider gear shafts: 2 pieces
- Spacers: 4 pieces
- Spacer dimensions: 16x23.5x0.5mm TW
- Compatible with Traxxas X-Maxx Belted 4WD Brushless RTR 8S Monster Truck (blue, orange, green, red variants)
- Compatible with Traxxas X-Maxx Ultimate (blue and green X variants)
- Compatible with Traxxas X-Monster Chassis
- Compatible with Traxxas XRT VXL-8S (blue, green, black, orange variants)
- Compatible with Traxxas XRT Ultimate (blue and green X variants)
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.
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