The C2SS 120 and C2TR 120 Roadrunner were 120 cc Kawasaki motorcycle

Motorcycle

A motorcycle is a single-track, two-wheeled motor vehicle. Motorcycles vary considerably depending on the task for which they are designed, such as long distance travel, navigating congested urban traffic, cruising, sport and racing, or off-road conditions.Motorcycles are one of the most...

s made from 1964 through 1969.

The C2SS was an off-road and road machine powered by a single cylinder

Single cylinder engine

A single-cylinder engine is a basic piston engine configuration of an internal combustion engine. It is often seen on motorcycles, auto rickshaws, motor scooters, mopeds, dirt bikes, go-karts, radio-controlled models and has many uses in portable tools and garden machinery...

, two stroke, rotary disc valve

Rotary valve

A rotary valve is a type of valve in which the rotation of a passage or passages in a transverse plug regulates the flow of liquid or gas through the attached pipes. The common stopcock is the simplest form of rotary valve...

 engine with displacement

Engine displacement

Engine displacement is the volume swept by all the pistons inside the cylinders of an internal combustion engine in a single movement from top dead centre to bottom dead centre . It is commonly specified in cubic centimeters , litres , or cubic inches...

 of 120cc producing 13+ hp. It was street legal having headlight, taillight, and license plate bracket. It had chrome

Chrome plating

Chrome plating, often referred to simply as chrome, is a technique of electroplating a thin layer of chromium onto a metal object. The chromed layer can be decorative, provide corrosion resistance, ease cleaning procedures, or increase surface hardness.-Process:A component to be chrome plated will...

 fenders front and rear, a crossbar on the handlebars

Motorcycle handlebar

Motorcycle handlebar refers to the steering mechanism for motorcycles. Handlebars often support part of the rider's weight, and provide a mounting place for controls such as brake, throttle, clutch, horn, light switch, and rear view mirrors....

, universal tires, an upswept right side chrome exhaust system, and apparent good ground clearance. The bike was available in either red, blue, or silver with the fuel tank having rubber knee grips.

C2TR

In 1968 the C2SS was renamed the C2TR apparently indicating an off road capability. It had a new style fuel tank design without rubber knee grips, a contrasting "Kawasaki" decal covering the entire side of the tank, a raised front fender, a rear rack for small amounts of cargo, and 4-speed transmission

Transmission (mechanics)

A machine consists of a power source and a power transmission system, which provides controlled application of the power. Merriam-Webster defines transmission as: an assembly of parts including the speed-changing gears and the propeller shaft by which the power is transmitted from an engine to a...

 with high and low gearing via 2 rear sprocket

Sprocket

A sprocket or sprocket-wheel is a profiled wheel with teeth, cogs, or even sprockets that mesh with a chain, track or other perforated or indented material. The name 'sprocket' applies generally to any wheel upon which are radial projections that engage a chain passing over it...

s changed manually.

In 1970, the C2TR was replaced by the smaller 100cc Kawasaki G4TR Trail Boss with 10 speeds (5 actual speeds) through a unique high/low range gearing switch rather than sprocket change.