Specs
Bore Diameter84.5mm (+0.140in Over)
Compression Ratio10.0:1
Rod Length5.394in / 137mm
Stroke89mm Standard
Pin.866in x 2.250in x .200in
NoteRequires rods with +1mm larger 22mm pin bushings

Piston Features:
3D milling on piston crowns for ready to install finish
Side gas ports for better ring seal
Ratios figured for 85mm x .030 head gasket @ 8.345″ Deck Height
Top ring down dimension: .300″
Designed for pin buttons for maximum strength
Premium H-13 .200W wrist pins included
Premium 1.2mm x 1.2mm x 2.8mm ring package included
Over-sized valve pockets – for larger than stock valve sizes
Valve pocket depth: 0.200″ intake and 0.150″ exhaust
2618 material for High HP/Boost applications