Wiseco Arctic Cat Kawasaki Engine Piston

In 2001, Wiseco changed the part numbers on all individual snowmobile piston kits. The P-Series part numbers have been converted to the new M-Series part numbering system. The P-Series system was based on the English, or Imperial measuring system. The M-Series is based on the metric system. The M-Series was implemented to ensure accuracy for today’s high performance snowmobile motors.