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New piston option for 68mm bore cylinders with a 6mm higher pin height like the 573mo6800 (blaster piston). This piston has a few changes that improve longevity, increased oiling to the needle bearing and larger repositioned intake windows. These retail for $89.95 each and are now available. Happy holidays. Side by side comparison with a blaster 573mo6800(right). A 573mo6800 piston in a 4, 7, or 10mm stroker cub cylinder at bottom dead center. New Driveline Perfomance piston at bottom dead center. Same piston crown profile as the 573mi6800.