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The NHRA Competition Committee amended the minimum weight rule for the Pro Stock Bike category today, it was announced by Cary Menard, vice president of technical administration and legal affairs, NHRA.

In the rule amendment, the minimum weight requirement for the Harley Davidson and NHRA-accepted American push rod V-twin up to 160 cid entries will be increased to 615 pounds from 575 pounds. The rule amendment becomes effective at this weekend's Sears Craftsman NHRA Nationals, June 25-27, at Gateway International Raceway in Madison, Ill.

"This adjustment in minimum weight was based upon actual Pro Stock Bike performance data gathered during the 2004 national events. Considering the variety of engine designs and manufacturers now participating in this category, the change was necessary in order to maintain a competitive balance within Pro Stock Bike," Menard said.