Honda CB125/CB125S Specs, Manuals, & Info

Buying a motorcycle? You'll need motorcycle insurance. Just answer a few questions below to compare personalized quotes.

⚠️ ATTENTION: Need to register or title your motorcycle? Be prepared to satisfy any insurance requirements. Click below for a free insurance quote.

Please answer the questions below to get started:

If you’ve got a CB125 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 CB125.
  • Where you can find used CB125s for sale to start a new motorcycle project or get a parts bike.
  • Specs, details, and information about the history of the CB125. may earn an affiliate commission when you make a purchase through the links on this page.

CB125 Specs & Details

The CB125 was produced as an inline twin motorcycle by Honda from 1968 to 1970, and was reintroduced in 1970 as a single cylinder version.

Specs for the 1968-1970 Honda CB125 include:

  • Top Speed: 65 mph.
  • Engine Displacement: 124cc
  • Cylinders/Engine Type: SOHC Twin
  • Compression Ratio: 9.4:1
  • Wet Weight: 242 lbs.

Specs for the 1970-1985 Honda CB125S include:

  • Top Speed: 75 mph.
  • Engine Displacement: 124cc
  • Cylinders/Engine Type: Single cylinder 4 stroke
  • Compression Ratio: 9.2:1
  • Transmission: 5 speed
  • Wet Weight: 282 lbs.

Find a CB125 for Sale Near You

If you’re looking for a CB125 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 CB125s 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 CB125 without a title).