HomeRacingDragbike RacingXDAMIROCK Pro Mod Rule Revision XDA MIROCK Pro Mod Rule Revision Share: Facebook Pro Mod Rule Revision: Bikes w/ 50″ or less crank to rear axle and stock stroke: 585 lbs. Click Link Below For Revision: http://www.mirockracing.com/rulebook/2013_mirock_rulebook_promod.pdf Sincerely, Jason Miller Share: Facebook Jack Korpela Previous ArticleMIROCK March of Dimes Benefit Next ArticleManufacturers Cup Bradenton Motel Info September 12, 2013