JE Pistons is proud to be a partner with Precision Concepts Racing for the 2019 season. When it was time for a new piston in one of their 2019 KX450s, we stopped by their shop to go over some tips on replacing a piston with their Lead Mechanic, Phil Valdez.
Yoshimura Research and Development has been building 4-stroke performance since 1954. We took a look at their in-house processes and their use of JE Pistons.