Manufactured by JUN and cooperated with Wossner in Germany, This W series is an excellent product in the cost performance. Only for RB26DETT Engine. This is a forged piston. Form is for convex, Weight 452g, Pin diam 21mm, Capacity 14.0, Pin height 30.5mm. Piston rings, Piston pins, Snap rings are included. Choose the Bore size 86.0, 86.5 or 87.0mm.