Derbi GPR50
The Derbi GPR50 was a single cylinder, two-stroke sport motorcycle produced between 2003 and 2015. Max torque was 4.35 ft/lbs (5.9 Nm) @ 9000 RPM. Claimed horsepower was 8.31 HP (6.2 KW) @ 10000 RPM.
Engine
The engine was a liquid cooled single cylinder, two-stroke. A 40.0mm bore x 39.3mm stroke result in a displacement of just 49.4 cubic centimeters. The engine featured a 10.5:1 compression ratio. Fuel was supplied via a single overhead cams (SOHC).
Drive
The bike has a 6-speed transmission. The final drive was via chain. Power was moderated via the automated twist and go.
Chassis
It came with a 100/80-17 front tire and a 130/70-17 rear tire. Stopping was achieved via single disc in the front and a single disc. single piston in the rear. The front suspension was a 41 mm upsidedown fork while the rear was equipped with a asymmetric swing arm. monoshock. The GPR50 was fitted with a 3.43 Gallon (13.00 Liters) fuel tank. The bike weighed just 242.51 pounds (110.0 Kg). The wheelbase was 53.54 inches (1360 mm) long.