Greg Comstock, age 67, of Manitowoc, Wisconsin, died May 21 as the result of an apparent heart attack while working out at the local YMCA, according to his friend John Brunner. 

“Greg has spent the past 40 plus years racing motorcycles including flat track, speedway (both in the U.S. and in Europe) and road racing, competing most recently as #75 in the AHRMA series,” Brunner wrote in an email to Roadracingworld.com. “Greg is survived by his wife of 48 years Cindy; and daughter Lori Kramer, son-in-law Brad Kramer, and grandson Aidan Kramer, of Oviedo, Florida.”