2249 Inner cam bearing gauge pins (pr)

These JIMS inner cam bearing gauge pins are a vital diagnostic tool for any Evolution or Shovelhead engine builder. Sold as a set of two, including one go and one no-go pin, they allow you to quickly and easily check the internal clearance of the cam needle bearing after it has been pressed into the case. If the press-fit is too loose, the cam can rock and cause excessive noise; if it is too tight, it can lead to rapid wear or bearing failure. This set fits 1958–1999 Big Twin models, excluding Twin Cams, ensuring your cam has the perfect operating environment for long-term reliability. It is a simple check that can prevent a very expensive engine failure.