Manufactured by JUN and cooperated with Wossner in Germany, This W series is an excellent product in the cost performance. Only for 4G63 Engine. This is a forged piston. Form is for concave, Weight 471g, Pin diam 22mm, Capacity-22.2, Pin height 34.6mm. Piston rings, Piston pins, Snap rings are included. Choose the Bore size 85.0, 85.5 or 86.0mm.