PRC (Pro Racing Cycles) LX-RR Works 2007 — Specifications

In 2007, the minimoto racing scene was a battlefield where every gram counted. The PRC LX-RR Works arrived on the scene like a missile, a pure racing machine that didn’t even intend to pretend to be street legal. Its specific “Youth group” aluminum frame and 35 mm Marzocchi inverted fork spoke a language that young riders’ mechanics immediately understood: the language of Sunday victory.

Its 49.5 cm³ two-stroke single-cylinder engine is a small time bomb. You have to make it scream to 14,000 rpm to extract its 13.5 horsepower, a figure that seems modest on paper but, relative to a dry weight of 36 kilos, transforms the motorcycle into a projectile. The stroke is square, with a bore and stroke of 39.5 x 40 mm, and the compression ratio of 13.5:1 requires quality fuel. This engine doesn't purr, it explodes, and its automatic transmission allows the young rider to focus solely on trajectory and braking.

The suspension equipment was a spoiled child’s dream for the time. Entry-level Marzocchi Shiver forks? Never. A rear Öhlins 36DPW shock on a minimoto? It was a sign that PRC was aiming directly for the podiums of national championships. The braking, simple disc front and rear, is more than sufficient for such a lightweight machine. The tires, in 100/90-12 front and 3.0-10 rear dimensions, offer the grip needed to exploit the 279 mm ground clearance.

This LX-RR Works was not intended to learn to do wheelies in a parking lot. It was a competition tool, period. With a seat height of 660 mm and a wheelbase of 1016 mm, it offered an aggressive riding position for a young teenager. The top speed of 80 km/h is anecdotal; on a dirt track, what matters is the ferocious acceleration, the nervous steering, and the ability to jump.

The PRC LX-RR Works embodied the ideal of the racing minimoto: stripped-down, focused, brutal. It was aimed at the father who wanted to give his son the best possible equipment to dominate the 50 cm³ category, and at the already biting young rider, ready to tame a demanding character. Today, it remains a fascinating testament to an era when racing really began at ten years old.