Specs
Bore Diameter 86.5mm (+0.020in Over)
Compression Ratio 9.5:1
Rod Length 5.090in / 129.3mm
Stroke 86mm Standard
Pin H-13 .866in x 2.250in x .225in

Piston Features:
3D milling on piston crowns for ready to install finish
Offset pins for quiet operation
Moly skirt coating for friction loss and skirt wear protection
Ratios figured for 89.5mm x .022" head gasket @ 8.070" Deck Height
Top ring down dimension: .250"
Premium 8620 .180W wrist pins chamfered for roundwire locks included
Premium 1.2mm x 1.2mm x 2.0mm ring package included
Over-sized valve pockets - for larger than stock valve sizes
Valve pocket depth: 0.100" intake and 0.090" exhaust
2618 material for High HP/Boost applications