Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Enjoy XS650.com?Consider making a donation to help support the site. XS650.com receives a small share of sales from some links on this page, but direct donations have a much greater impact on keeping this site going.
Yes, you should get an engineer to measure your bores BEFORE buying pistons. He will tell you what oversize is needed. The piston diameter should be between 0.050 & 0.055mm (0.002 & 0.022") smaller than the bore diameter!
With a stock bore being about 75.010, a .25 over piston being 75.25, it can't fit in a stock bore. I would get your bores measured. It may already be a .25 over.
Where did the .25 over pistons come from?