For decades, karting sprockets remained virtually unchanged—same bolt patterns, same pitch, same design. Aside from a few minor innovations like split sprockets and “skip tooth” styles, little progress had been made… until now.
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The Xcel Drive System from Phantom Racing Chassis is a complete reengineering of the traditional sprocket and hub assembly. This revolutionary design dramatically reduces rotating weight, minimizes friction, and maximizes acceleration, setting a new standard in drive efficiency.
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Each Xcel sprocket is precision-machined from high-strength alloy and treated with a durable coating for long-lasting performance. Designed to outperform and outlast the competition, these sprockets deliver measurable gains both in speed and consistency.
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At the heart of the system is the lightweight floating drive hub, featuring a four-bolt pattern that significantly reduces overall rotating mass. The hub allows the sprocket to “float,” automatically self-aligning the driveline as the chassis flexes to maintain a perfectly true chain line. Additionally, the majority of the rotating mass has been strategically moved closer to the rotating axis, which greatly improves acceleration by reducing rotational inertia. The result is a smoother, freer, and faster drivetrain response off the corner.
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Available Sizes: 50–68 teeth
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To complement the system, Xcel Gear Guards are offered in aluminum or genuine carbon fiber, mounting cleanly on either side of the sprocket to guide the chain and help prevent derailment during competition.
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The Xcel Drive System — Lighter. Faster. Smarter.
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