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KX60 - 72cc Ported Big Bore kit
Fits KX60 1985 through 2005 and RM60 2002-2005. The kit includes: 72cc big bore (Nikasil plated) cylinder 46.5.00 mm bore. Cylinder head rechambered and polished for big bore piston. Wiseco Pro-lite 46.5mm piston, rings, pin and clips, top-end bearing and a top-end gasket set. This is a complete top-end. The exhaust port has been enlarged and polished, the transfer ports have had the rough casting flaws removed and finished with a glass beaded finish. The glass beaded finish helps prevent fuel/air separation but also allows good air flow. Removing casting flaws and polishing the exhaust port will gain significant power in midrange and top-end without loosing any low end power. The bigger bore adds power all through the powerband. The Nikasil plating on our re-plated cylinders is a minimum of .004" thick as compared to the stock thickness of .001"-.002" Total for the kit: $600.00 We will refund $100.00 if you send us your old cylinder and head for the core charge or $500.00 on your cylinder.