Looking to turn your KLX140 into the ultimate trail bike?  Look no further than this 220cc complete upgrade kit!

Brand new big bore kit for Kawasaki KLX 140 2008-2025 and KLX 150 2008-2025 All Series (S – L – BF Series)

Contains everything needed to make great performance of your bike!

– Cylinder Head with big valve (34/29) include racing valve springs and misc parts

– Camshaft with roller rocker arm design include cam bearings, Increased low-end response faster

– Stroker Crankshaft longer +6mm from stock

– Ceramic Forged cylinder barrel with 68mm Forged Piston. Forged ceramic cylinder barrel is very durable for extreme condition

– Racing Carburetor with different jets and new intake carb and custom boot to the airbox

– Performance CDI

- Clutch Springs

- Throttle Cable Kit

PLEASE NOTE THIS KIT REQUIRES CASE BORING THE CRANKCASE LARGER TO ACCEPT THE LARGER CYLINDER - Professional installation is HIGHLY RECOMMENDED! 

There are no installation instructions, if you are not familiar with building engines please consider having a professional install this kit.