This 1977 Yamaha YZ80 has been refinished in yellow with black and white graphics, and it is powered by an overbored 79cc two-stroke single that has reportedly been refurbished with a 1mm-oversized Wiseco piston and a replacement expansion chamber exhaust system, 28mm Mikuni carburetor, Boyesen reed valves, and ignition components. The motorcycle is also equipped with a replacement clutch, a five-speed transmission, a solo seat, high-mounted fenders, wire-spoke wheels, front and side number plates, and a side stand. Acquired by the seller in 2023, this YZ80 is offered at no reserve with replacement plastic components and a Texas title.
The bike has been refinished in yellow with black and white graphics. Features include a solo seat, high-mounted fenders, front and side number plates, and a side stand. The seller notes the fuel tank was sealed and the foot pegs were replaced under current ownership.
Wire-spoke wheels measuring 16″ up front and 14″ out back and are mounted with Kenda and Pirelli knobby tires, respectively. Suspension is handled by a telescopic fork as well as a pair of preload-adjustable shocks attached to the swingarm. Braking is from a drum at each wheel.
The cross-braced handlebar is equipped with a twist-grip throttle with an integrated ignition switch in addition to control levers with black dust covers. The YZ80 was not equipped with an odometer or other instrumentation, therefore total mileage is unknown.
The overbored 79cc two-stroke single is equipped with a kick starter, and a reported overhaul included resurfacing the cylinder head, fitting a 1mm-oversized Wiseco piston, and replacing the ignition coil, ignition condenser, ignition points, Mikuni 28mm carburetor, spark plug, ignition wire, expansion chamber exhaust system, Boyesen reed valves, and petcock.
Power is sent to the rear wheel through a five-speed transmission and a drive chain. The seller states that the clutch, chain, and rear axle bolt were replaced under current ownership.
Uninstalled replacement plastic components are included in the sale.
The Texas title carries “off road use only” and “VIN certification waived” notations under the remarks section.