Wiseco Professional Flat Top 4.005 Bore Pistons

Piston Rings Included:Yes

Bore (in.):4.005 in.

Bore (mm):101.727mm

Stroke:3.622 in.

Rod Length:6.098 in.

Piston Style:Flat top, with two valve reliefs

Piston Material:Forged aluminum

Compression Height (in):1.304 in.

Piston Head Volume (cc):+3.20cc

Wrist Pin Style:Press-fit or floating

Wrist Pin Retainers Included:Yes

Wrist Pin Included:Yes

Pin Diameter (in):0.927 in.

File Fit:Yes

Gapless:No

Top Ring Thickness:1.2mm

Top Ring Material:Steel

Top Ring Facing Material:Gas nitrided

Second Ring Thickness:1.2mm

Second Ring Material:Cast iron

Second Ring Facing Material:Phosphate coated

Oil Ring Thickness:3.0mm

Oil Ring Material:Chrome plated carbon steel

Oil Ring Tension:Standard