NASCAR’s experiment this season with flange-fit composite body cars in its Xfinity Series has been a successful one for Team Penske, one it hopes will continue this weekend at Phoenix and provide the springboard to a fourth series car owner’s championship.
The new composite bodies feature 13 separate panels attached by flanges which can be replaced in sections when necessary. The designs were made optional this season at the fall Richmond, Dover and Phoenix races.
Team Penske has run the design each time, winning with Brad Keselowski at Richmond, Ryan Blaney at Dover and Blaney will again be in the car this weekend at Phoenix. Next season, the flange-fit composite body will be optional at all tracks except superspeedways.
We talked with Team Penske Xfinity crew chief Greg Erwin about working with the composite body cars and his team’s chances to capture this season’s owner’s title.