The Gilera Stalker 50 was a single-cylinder, two-stroke scooter motorcycle manufactured by Gilera an Italian motorcycle manufacturer founded in Arcore in 1909. In 1969, the company was purchased by Piaggio. Its top speed was 30 mph (48 km/h). Max torque was 3.54 ft/lbs @ 6250 RPM. But before you work on your Stalker, double-check to see if you have a Gilera Stalker workshop manual.
The engine was a single-cylinder air-cooled two-stroke. A 40.0mm bore x 39.3mm stroke resulting in a displacement of just 49.3 cubic centimeters. The bike had an automatic transmission.
Hydraulic in the front and an expanding brake (drum brake) in the rear. The rear was given a single hydraulic damper, while the front suspension was upside down telehydraulic. The wheelbase was 48.82 inches long. The Stalker 50 was fitted with a 1.48 Gallon (5.60 Liters) fuel tank. However, if you ever find yourself showing your Stalker some TLC, make sure you have a Gilera Stalker service manual to make sure the job gets done right.