He asked Simpson Racing, a company known for making racing gear, to make him a fire suit without sleeves. Simpson Racing recently posted on X, joking about how Greg Biffle keeps their designers on ...

Former NASCAR Cup Series driver Greg Biffle showed off the dyno testing ... Biffle climbs into the truck and revs it at a low gear, giving the reading of 91 horsepower, and then a 110.2 horespower ...