Unframed 8x10 poster print of the pen & marker on newsprint original, "Honda No.1".
The CT90 Trail 90 was preceded by the CT200 Trail 90, which had a dual-sprocket in the rear, with which to shift to the low range the operator clipped an extra length of chain into the drive and ran it over a double-size rear sprocket.
Honda targeted hunters, fishermen, commuters, and outdoorsmen with the Trail 90. Early ads often had these bikes in wilderness settings. They were well suited to narrow trails, being small and lightweight (around 188 pounds) and with a forgiving suspension. The bike was ideal for climbing and carrying packs. The four-stroke engine was quiet and almost all models were equipped with spark-arrestor exhausts.
The CT90 in its classic form was an 89 cc 4-stroke air-cooled single with a four-speed transmission and a semi-automatic clutch, coupled with a 1.867:1 ratio reduction box that was manually switched into operation using a small lever under the transmission case. The cylinder was nearly horizontal in the step-through tube/stamping frame. The fork was originally a leading link suspension, replaced in 1969 with conventional telescoping-tube suspension.