Motorcycle Piston Rings For Yamaha XV1600AT XV1600AS 1999-2003 Work for Fit For Yamaha XV1600AT XV1600AS cruiser motorcycle engine cylinder overhaul assembly Match cylinder bore specification for direct replacement without or auxiliary fittings Improve cylinder compression, cut oil consumption power loss during long-distance cruising Adopt wear-resistant machined rings to form even tight contact with cylinder wall Strictly follow OEM dimensional standards to eliminate assembly clearance gaps