1. Having trouble logging in? Try closing your browser and re-opening it. If that doesn't work, try a different browser or device. The site will be updated soon to resolve these browser issues.
    Dismiss Notice
  2. Dismiss Notice
  3. Want an XS400.com t-shirt? Go to the store to order. Limited sizes and quantities available.
    Dismiss Notice

rear sprocket swap question

Discussion in 'The Garage' started by stillwater, Jun 6, 2023.

  1. stillwater

    stillwater XS400 Member

    Looking to increase top speeds & drop rpm for interstate travel on my XS400-2.

    I found a Sprocket on eBay, seller says it will fit 1980, 1981 Yamaha XS400
    Would it fit a 1979?
    Or, how could I get it to fit properly?
    Last edited: Jun 6, 2023
  2. stillwater

    stillwater XS400 Member

    Thought I would add that ones I've found supposedly also fit the earlier XS250 and XS360 models, some of them anyway if that helps.
    Wondering if the '79 had a one-off setup or something.
  3. CaptChrome

    CaptChrome XS400 Addict Top Contributor

    My understanding is that the rear sprockets on the 80-82 bikes had an "offset" to allow the chain to clear the fatter profile tire on the 16" rim. The earlier bikes with 18" rims should have a flat sprocket. I don't know if an offset sprocket will work on the flat sprocket bikes, but I a pretty sure that using a flat sprocket on a 16" rim bike will cause some chain wear on the tire.
    stillwater likes this.

Share This Page