Honda CM400 Specs, Manuals, & Info


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If you’ve got a CM400 that you’re working on, you’ve come to the right place.

Whether you’re doing a full rebuild or restoration motorcycle project or you just need to complete some routine maintenance, we’ve got all the information and links to what you need to do the job right.

On this page you’ll find:

  • Links to the motorcycle service manual for your CM400.
  • Where you can find used CM400s for sale to start a new motorcycle project or get a parts bike.
  • Specs, details, and information about the history of the CM400. may earn an affiliate commission when you make a purchase through the links on this page.

CM400 Service Manuals

The motorcycle service manual should always be one of the first things you pick up when you buy a new bike.

Whether you’re doing a full rebuild or just need to do a standard tune-up, having the proper owner’s manual is going to ensure you do the job the right way.

Find the CM400 service manual you need at the links below: has ready-to-download service manuals for a variety of years and model variations. Get yours today and get the job done right!


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CM400 Specs & Details

The CM400 was a standard style motorcycle produced by Honda from 1979 to 1982, until it was upgraded to the CM450.

The CM400 featured a parallel twin, air cooled four stroke engine.

Noteable differences between models include spoked vs. Comstar wheels and drum vs. disc brakes.

Specs for the Honda CM400 include:

  • Top Speed: 97mph
  • Engine Displacement: 395cc
  • Cylinders/Engine Type: Twin, four stroke
  • Compression Ratio: 9.3:1
  • Transmission: 5 speed or 2-speed automatic.
  • Wet Weight: 405 lbs

Find a CM400 for Sale Near You

If you’re looking for a CM400 of your own or need a donor parts bike for your current motorcycle project, you can use the used bike search tool to find what you’re looking for.

Click your state below to find used CM400s near you.

These motorcycle search engines search Craigslist listing for the entire state so you don’t have to individually search each specific region.

Once you’ve got the bike up and running, be sure to check back to our motorcycle registration and title guides if you need help getting plates (Especially if you’ve bought the CM400 without a title).


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