The Specifications of a 1968 Honda CT-90

At 200 lbs., the 1968 Honda CT-90 K2 Trail 90 allows for relatively easy transport on a rack or small trailer. In a pinch, you can unclamp the handlebars to turn them sideways and fit the bike in your backseat. The knobby tires provide excellent grip for off-roading fun, but you can use universal-tread tires to ride on pavement. Of course, you must also add lights, a horn and a rearview mirror for safe street driving.

  1. Engine and Transmission

    • Early four-speed models of the bike used a dual overlay rear sprocket setup. Closer to 1968, the bike had a single sprocket but an eight-speed dual range transmission. The engine, an 89-cubic-centimeter overhead cam single cylinder with an automatic clutch, provides a maximum of 7 brake horsepower at 8,500 revolutions per minute (rpm) with a top speed of 57 miles per hour (mph).

      The 4-stroke engine was quieter than the 2-stroke engines on earlier bikes, using less fuel and running smoother at low rpms.

      Serial numbers began with CT90-100001.

    Suspension

    • Rather than using telescopic fork tubes, the front suspension used a bottom link, which consisted of a shock absorber, rebound spring and pivoting arm. As the wheel bounced, the pivot moved and the shock-and-spring unit absorbed the bumps.

    Price, Colors and Styling

    • In 1968, you could buy the CT-90 for less than $350. It came in only two colors: scarlet red and yellow. The seat and luggage rack came standard with chrome trim. The chrome exhaust system and heat shield have an upsweep toward the tail of the bike.