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Big Bore Kit 186cc with 66mm piston size for Kawasaki KLX140 – KLX150 Series 2008-2025
Aluminum Rear Sprocket for Kawasaki KLX150 2008-2021
available size 31-25 and 34-29
No modification needed to install this to a CRF150L
you will only need to cut that area in the cylinder head
KLX140 KLX150 Big Bore Kit 170cc with Camshaft Performance Parts/Yamaha/NVX125 - NVX155 Big Bore Kit 186cc withThis is a Brand New Big Bore Cylinder Kit for Kawasaki KLX 140 140L or KLX 150 Series all years This kits comes complete with a New Cylinder Piston Wrist Pin Rings Clips and Gaskets Include Stage 1 camshaft for better performance Add Camshaft Bearings for this kit Replacement piston kit form this link : Performance Piston Kit KLX140 KLX150 Choose 63mm for this 170cc kit Keep all your original parts, simply bolt it up! *Rejet the carbs is needed after