Honda Trail 90


How do I figure out if this is a CT2, CT3 OR CT? {John, CA, US, - 1971 Honda Trail 90}


At first, I was not sure what you meant by is it a CT or CT2? The CT2 and CT3 are Yamaha designations from the 70's. Your question says you have a 1971 Honda Trail 90 so I started with our old microfiche deck and contacted a veteran of the Honda Hoot.

Here is a little background information. Back before the 17 digit VIN, a bike made in 1968 in Japan but sold in 1970 in the US was considered a 1970 and the serial number tags, put on in the US, reflected that.

During the late 1960s and though out the 1970s, many Honda bike model names ended with K# {K and a number} to indicate the model edition. The first edition was a K0, the next a K1, and so on. But it did not necessarily mean year 1, year 2. For example the Trail 90 CT90K0 was sold from 1966 through 1968. Honda collectors have their own vernacular and may refer to different Trail 90's in shorthand. Saying the CT2 and meaning the CT90K2 model.

Check the serial number (VIN) of your Trial 90 against the chart below.

Honda Model Edition Code Year and
Serial Numbers
CT90K0 1966-1968
serial number began CT90-100001
CT90K1 1969
serial number began CT90-200001
CT90K2 1970
serial number began CT90-300001
CT90K3 1971
serial number began CT90-400001
CT90K4 1972 – 1973
serial number began CT90-1400001
CT90K5 1974
serial number began CT90-1500003
CT90K6 1975
serial number began CT90-1600003

The abbreviations changed in 1976 to include the year instead of a K#. For example the 1976 Trail 90 was CT90'76. In 1981 they changed to the 17 digit VIN we know & love. I hope this answers your question.

If you are a collector or aficionado of vintage Hondas and have more to add to this explanation, please add your comments using the form below.

Have Something To Add?

Do you have a comment or something to add to this Q and A page? Share it!

[ ? ]

Upload 1-4 Pictures or Graphics (optional)[ ? ]


Click here to upload more images (optional)

Author Information (optional)

To receive credit as the author, enter your information below.

(first or full name)

(e.g., City, State, Country)

Submit Your Contribution

(You can preview and edit on the next page)

What Other Visitors Have Said

Click below to see contributions from other visitors to this page...

Serial # 
I bought serial # CT90 170910; Engine serial # CT 90E 171095 Engine is stamped: 89cc; Is it 1968? Kippy.

bike owner - 1969 ct90k1 Not rated yet
On the 1969 Honda ct90k1 there was a change starting at ser#234852. It came with an " early" carburetor up to Serial#234852. After Serial#234852 it …

Click here to write your own.

Need more free ATV or motorcycle repair information?

Q&A: Leaking Fuel Valve?
Q&A: Leaking Gas Valve flooding engine?
Q&A: Battery Maintenance
Q&A: Battery Types
Q&A: Carb Jetting page 1
Q&A: Carb Jetting page 2
Q&A: Aftermarket Exhaust System
Q&A: Carb Float Needle
Q&A: Carburetor Identification

Q&A: Honda Points
Q&A: Rim Bolt Pattern
Q&A: CB750F Identification
Q&A: Broken Speedometer Cable End
Q&A: Suzuki LT-Z400 QuadSport Tank Removal
Q&A: Motorcycle Trike Conversion
Q&A: Honda Rancher Reverse Problem
Q&A: Kawasaki Z650SR Fuel Mix problem
Q&A: RM80 Piston Position

Q&A: LT80 Engine Oil Issues

href="">Q&A: Clutch Cable Break In period?

href="">Q&A: Cooling Fan Problem?

href="">Q&A: 1983 XV920 Virago Oil Change

href="">Q&A: ATC90 Spark Plug question

href="">Q&A: Nighthawk 750 Spark Plug Gap

href="">Q&A: Bike Registration Problem

href="">Q&A: Lost Hypercharger Instructions

href="">Q&A: Bourget Charging System

href="">Q&A: Can Spark Plugs be cleaned?

href="">Q&A: Wheel Bearing Removal for 1976 CB750K

href="">Q&A: 1982 YZ490 Kick Start

href="">Q&A: 1979 GL1000 Goldwing Points Gap

href="">Q&A: 1982 GS650GLZ Cable Routing Problem

href="">Q&A: Ether vs. Carb Clean

href="">Q&A: ATV Ignition Trouble

href="">Q&A: John Deere backfiring

href="">Q&A: Honda Phantom 200 Tire Pressure

href="">Q&A: TRX350 Clutch Slip possible causes

href="">Q&A: LTF250 Cam Chain Installation & Timing Marks
Q&A: Demon X pit bike clutch trouble

href="">Q&A: OK to Increase Tire Size?

href="">Q&A: RV125 Lost Keys

href="">Q&A:  1981 GPZ550 flywheel cover

href="">Q&A:  2000 Yamaha Badger : Hard to start

href="">Q&A:  1975 CB360T Replacement Tire

href="">Q&A:  Vintage CB750 Chain Size

href="">Q&A: LTA500F Vinson Leaky Fuel Petcock

href="">Q&A: TRX350 Rancher Hard Shifting

href="">Q&A: Replacement Rectifier

href="">Q&A: GS500F Turn Signals

href="">Q&A: Suzuki Quad Poor Idle

href="">Q&A: Yamaha Wolverine cracked Carb top

href="">Q&A: Vulcan Classic VN1600 Cold Start issues

href="">Q&A: 1980 GS1000 with No Power

href="">Q&A:  High Octane Fuel

href="">Q&A: Suzuki Bandit 1200 Water in the Oil

href="">Q&A: Suzuki LT250 Vibration and Clutch Slip

href="">Q&A: Rancher with Oil in the Air Box

href="">Q&A: Honda NTV 650 Deauville with Brake Master Cylinder problem

href="">Q&A: Virago Oil Filter Location

href="">Q&A: GSX-R1100 with Intermittent Spark

href="">Q&A: V-Star 1100 Brake Light Wiring

href="">Q&A: GoldWing 1000 Dyna S Ignition

href="">Q&A: Honda Trail 90 CT designation?

Street Bikers' Den - Best Online Source for Sportbike and Streetbike Gear, Accessories & Apparel

WreckingBalm 180x150

Shop Advance Auto Parts

Lady Bikers' Den - Women's Motorcycle Gear & Accessories

More Honda Trail 90 Info

Repair Advice Page

Weeks Motorcycle Home

Your Business Needs a Great Website!