1981 Yamaha RZ50: When Supersport Excitement Comes in a 50cc Package

1981 Yamaha RZ50: When Supersport Excitement Comes in a 50cc Package

The year 1981 witnessed the birth of a remarkable machine that brought the thrill of supersport motorcycling to the 50cc category: the Yamaha RZ50. It was a time when Yamaha had already made its mark in the world of motorcycling, and the RZ50 was a bold addition to their lineup, aimed at providing the same 2-stroke excitement as its larger siblings, the RZ250 and RZ350.

Supersport DNA in a 50cc Frame

The Yamaha RZ50 was all about delivering a supersport experience on a smaller scale. To achieve this, it was equipped with a range of features and technologies that made it stand out in the 50cc class. At the heart of the RZ50 was a liquid-cooled, 2-stroke, single-cylinder engine. This engine incorporated Yamaha's proprietary Yamaha Energy Induction System (YEIS), which enhanced its performance and efficiency.

The RZ50's powerplant was mated to a 6-speed close-ratio transmission, a feature not commonly found in the 50cc segment. This transmission allowed riders to make the most of the engine's power, providing a responsive and engaging riding experience. It was clear that the RZ50 was built for those who appreciated spirited riding and wanted a machine that could deliver.

A Strong Foundation: Chassis and Suspension

To complement its powerful engine, the RZ50 featured a highly rigid double cradle frame. This design provided stability and precise handling, ensuring that riders could confidently navigate twisty roads and experience the joys of cornering.

The suspension system on the RZ50 consisted of a Monocross rear suspension, a technology often associated with larger and more powerful motorcycles. This setup allowed the RZ50 to maintain good road contact and absorb bumps and imperfections, enhancing the overall ride quality.

Performance and Style in a Compact Package

The Yamaha RZ50 left no room for compromise when it came to performance. It was the fastest 50cc bike of its time, boasting class-leading power and torque figures. With a maximum power output of 5.3kW (7.2PS) at 9,000 rpm and a maximum torque of 6.1N·m (0.62kgf·m) at 8,000 rpm, the RZ50 packed a punch that could rival many larger machines.

The RZ50's aggressive styling and sleek design further emphasized its supersport pedigree. It featured 18-inch cast wheels at the front and rear, enhancing stability and grip. The front disc brake ensured efficient stopping power, adding to the bike's overall safety and control.

A Timeless Classic

The 1981 Yamaha RZ50 remains a timeless classic, celebrated for its unique blend of supersport performance and the nimbleness of a 50cc machine. It's a testament to Yamaha's commitment to innovation and excellence in motorcycling. Riders who had the privilege of owning or experiencing the RZ50 know that it was more than just a small-displacement motorcycle; it was a supersport icon in its own right.