750cc Modified Runabout (750ccMR), Also known as "D Mod" and DMR RequirementsMinimum Age: 16 years oldEngine: Engine displacement of 30 c.i up to and including 44 c.i., Mercury MK55H, and all 40 c.i. Mercury powerheads, all Mercury 44 c.i. 4 cylinder powerheads. Minimum Weight: 425 - 470 lbs.
