The Original Dual Sport Motorcycle



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1961 - Early Trail
1962 - Trail 50
1963 - Trail 55
1964 - Trail 90
1965 - Trail 90
1966 - Trail 90 'K0
1967 - Trail 90 'K0
1968 - Trail 90 'K0
1969 - Trail 90 'K1
1970 - Trail 90 'K2
1971 - Trail 90 'K3
1972 - Trail 90 'K4
1973 - Trail 90 'K4
1974 - Trail 90 'K5
1975 - Trail 90 'K6
1976 - Trail 90
1977 - Trail 90
1978 - Trail 90
1979 - Trail 90
1980 - Trail 110
1981 - Trail 110
1982 - Trail 110
1983 - Trail 110
1984 - Trail 110
1986 - Trail 110
2008 - Trail 110
1977 - Trail 125
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1969 - Trail 90 'K1


1969
 
The 1969 Honda CT90 'K1, continued the use of model designations that started with the letter 'K", followed by a number. A major improvement to the CT90 'K1 was the addition of the Telescopic Front Fork Suspension. This provided a better ride with a longer travel of the front suspension than the older style bottom link suspension. There is a report that the 1969 'K1 telescopic front forks are unique (shorter top bolt) and thus not interchangeable with later years. Additionally, the engine air intake was moved to be "out of the way", on the left side of the frame, below the seat. However, this lowered the height of the air intake, thus restricting the ability of the CT to cross deep streams. This is a unique, one year only shape for the air intake. This move of the air intake, did allow the use of a plastic, frame downtube cover for the first time. The single side cover for the battery and tool kit was the same color as the CT frame. There were some mid year changes to the K1. Some people think the later K1's are called K1b's (many individuals use this terminology), but Honda never created anything like that, all 1969 Honda Trail 90's, are just K1's. The early K1's had a carburetor with 4 screws (unique to this early model of K1) and the later K1's had the 2 screw model carburetor (the screws held the top and bottom together), confirmed on serial number CT90-233448, perhaps earlier. Both types of carburetors had a specific manifold for each type of carburetor (which are not interchangeable). Early 1969 'K1's had a front, fender mounted, amber side reflector (prized by some CT'ers) and later models had the front amber side reflectors mounted on the front fork tubes (one on each side).
 
The "States", via their Department of Motor Vehicles (DMV) or similar named agencies, control the regulation of equipment on vehicles and NOT the United States Federal Government (which could be a more "uniform" set of laws, used in all states). Thus, each state is allowed to set its own laws regarding equipment on vehicles. Several states (Indiana - 1956, Ohio - 1968, Texas - 1960) had by 1969 already written laws requiring motorcycles to have turn signals as standard equipment. Several motorcycle manufacturers, including Honda, were preparing for this requirement and had in fact started installing turn signals on other models. The best evidence of this is the inclusion within the speedometer of an indicator light for turn signals and on some years the left handlebar switch to activate the turn signals. The 1969 'K1, was the first year to have an extra light for indicating the activity of turn signals (often called "winkers" in documentation, and labeled with a "W" on the speedometer face in coming years). And, there are a few reports of 1969 'K1's having turn signals factory installed, but as of yet we don't have photo proof. The 1969 'K1 has a unique, one year only, style of speedometer, with a shape that was triangular.
 
 
Model ID
CT90 'K1
Common Name
Honda Trail 90
Serial or VIN Number Begins At
CT90-200001
Engine Size
89 cc
Engine Type
Overhead Camshaft
Carburetor Type
T90KA, 4 Screw with "O ring" gasket. (Early Model).
K29A, 2 screw (Later Model).
High Altitude Knob Present
Yes
Fuel Petcock Positions - ON RES OFF
Jets - Factory - Other
 
Transmission Speeds
4 Speeds
Transmission Shift Pattern (Toe)
N
1
2
3
4
High - Low Gearing Option
Dual Range Sub Transmission
Suspension Front
Telescopic Shocks (First year)
Suspension Rear
Telescopic Shocks
Speedometer Highest Speed
80 mph
Speedometer Indicator Lights
Green = Neutral
Amber = Turn Signals
Red = High Beam
Speedometer Trip Odometer
No
Brake Activation Front
Right Handlebar Lever
Brake Activation Rear
Right Foot Lever and Left Handlebar Lever
Rear Cargo Rack, Size & Shape
Large with Rear Vertical Bar
Handlebar Rotates
No
Handlebar Color
Chrome Tube Style
Paint Color
Scarlet Red
Yellow
Auxiliary Gas Tank
No
Turn Signals
Possible
 
Other Unique Features
First year for new location of Air Box
Unique Air Box shape, one year only.
First year for plastic Gray Downtube Cover.
Single Side Cover (battery & tool box) same color as CT frame.
Early models had the front fender mounted reflector.
Later models had front fork reflectors.
All Chrome Exhaust.
 
 
RED
 
Right Side (Later Model)
 
 
Left Side
 
 
Front
 
 
Rear
 
 
Engine Right Side
 
 
Engine Left Side
 
 
Seat
 
 
Speedometer
 
 
Front Fender Reflector (Early Model)
 
 
Front Turn Signals on Early Model (No original, rear turn signal photos, yet)
 
 
 
Rear Cargo Rack ( Rechromed)
 
 
 
 

 
Yellow
 
Right Side (Later Model)
 
 
Left Side
 
 
Front
 
 
Rear
 
 
Engine Right Side
 
 
Engine Left Side
 
 
Seat
 
 
Speedometer
 
 
Front Fender Reflector (Early Model)
 
 
 
 


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