Making huge horsepower without a stroker crank, you get great performance combined with the reliability of a turn-key ATV. The 440cc kit includes the following: polished stainless steel pipe and muffler, 440cc big bore Nikasil carbide cylinder upgrade, pro-port intake & exhaust porting, combustion chamber porting, 12.5:1 Stage IV forged piston, Stage IV rev cams, and a complete gasket set.

Making huge horsepower, you get great performance combined with the reliability of a turn-key ATV. The 470cc kit includes the following: polished stainless steel pipe and muffler, 470cc big bore Nikasil carbide cylinder upgrade, pro-port intake & exhaust porting, combustion chamber porting, a rebuilt stroker crankshaft, a JE billet piston, Stage IV rev cams, and a complete gasket set.

The FCR carb will work wonders for your LT-Z400 or KFX400. You will see huge gains throughout the powerband and when combined with our billet aluminum K&N filter asembly, your intake system will be able to keep up with the demands of your exhaust system or big bore kit.

The FCR carb will work wonders for your LT-Z400 or KFX400. You will see huge gains throughout the powerband and when combined with our billet aluminum K&N filter asembly, your intake system will be able to keep up with the demands of your exhaust system or big bore kit.