Kawasaki F7 175 cc piston, connecting rod, and crankshaft main bearing 4400

Piston has no marks, crank and bearings move freely. Very end of the crank shows some discoloration and pitting According to seller, an F6 125 had been upped to the 175cc displacement. This is true because the bottom end is the same for both bikes. He wanted to get it back to original 125cc back to its original state, so he took these parts out. . I have the matching cylinder and piston under a separate sale.