New at Jessbikes!These are new forged pistons for all Kawasaki S3 / KH400s made by Wossner in Germany. As you can see in the pictures these pistons have been optimzed by Wossner engineering.Wossner is known worldwide as a leader in quality. The skirt also has a complete moly coating to ease break in and also offers additional protection at high rpm. Each piston kit includes rings, wrist pin, and circlips.You are buying (3) kits-enough for 1 S3-KH400 motor.These are 57.5mm 1st oversize. I’ll take orders for these.I can have them here in 3 days.