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Kits
Kx 80 -> 107cc Big Bore kit 1991-1997
fits KX 80, or KX 100 1991 through 1997. The kit includes: 107cc big bore (Nikasil
plated) cylinder 54.50 mm bore. Cylinder head modified for the big bore piston.
Wiseco Pro-lite 54.50mm piston, rings, pin and clips, top-end bearing and a
top-end gasket set. This is a complete top-end. The Nikasil plating on our re-plated
cylinders is a minimum of .004" thick as compared to the stock thickness of
.0015"-.002"
Total for the kit: $500.00 We will refund $100.00 if you send us your old cylinder and head for the core charge. Total $400.00 on your cylinder. add $100 for full porting and polishing, the transfer ports get the rough casting flaws removed and finished with a glass beaded finish. Removing casting flaws and polishing the exhaust port will gain significant power in midrange and top-end without loosing any low end power. The glass beaded finish helps prevent fuel/air separation but also allows good air flow. The combustion chamber of the head gets polished also.
Kx 80 -> 107cc Big Bore kit 1998-2008
This kit is also available for the KX 80, KX 85 or KX 100 1998 through 2004 Add another $80.00 for a new powervalve if your powervalve is worn to bad to be re-used (when the kx powervalve gets worn to bad it will not close completely and in the open position it drops down to far) A worn powervalve hurts low end and top end power.. The core charge is higher also, due to the fact that the powervalve cylinders are harder to find.
Total for the kit: $600.00 We will refund $200.00 if you send us your old cylinder, head and powervalve for the core charge. $400.00 on your cylinder add $100 for full porting and polishing, the transfer ports get the rough casting flaws removed and finished with a glass beaded finish. Removing casting flaws and polishing the exhaust port will gain significant power in midrange and top-end without loosing any low end power. The glass beaded finish helps prevent fuel/air separation but also allows good air flow. The combustion chamber of the head gets polished also.