Supersprox Stealth

A sprocket is almost always made of steel or aluminum. Steel has the advantage of being durable, but it is also a heavy material. Since the sprocket is part of the rotating mass, the weight savings are much more noticeable than with non-rotating mass. A sprocket made entirely of aluminum would be lighter, but it would be too unstable.

Supersprox Stealth combines both materials into a top-tier product for everyday use; the inner ring is made of lightweight aluminum and the outer ring of steel.
The smaller the sprocket, the higher the gear ratio, which means higher top speed but less acceleration.

Supersprox is known from various racing series, is a multiple Dakar Rally winner, and is a supplier to WSBK teams.