Wiseco K1643 Piston Kit for 1984-1999 Harley Davidson Evo Big Twin 1340 - 3.528i

Wiseco Forged Piston Kit

Part Number: K1643

• Valve pocket designs allow maximum flow around the valve, allowing the use of oversized valves and high lift cams.
• Piston crown shapes are designed to promote the maximum intake charge efficiency through a scavenging mixture ‘Cross Flow’ during intake and exhaust valve overlap.
• More fuel and air equals more horsepower.
• Piston domes are designed for optimal quench during the compression/ combustion cycle, resulting in resistance to detonation and pre-ignition.
• The end product is longer engine life and increased horsepower potential.
• Precision machined ring grooves with proper orifice/ accumulator volume feature calculated groove root diameters and axial widths, providing excellent surface finish and flatness, maximum ring seal, and minimized blow-by and oil consumption.

Fits: 1984-1999 Harley Davidson Evo Big Twin 1340

Displacement: 1361cc
Bore - Standard: 3.498in
Bore - Actual: 3.528in
Bore - Oversize: .030in
Stroke: 4.250in
Compression Ratio - Actual: 8.5:1
Dome Type: Flat Top
Engine Type: 80ci
Dome Volume: -1.5cc
Valve Pocket Depth - Intake: -.178in
Valve Pocket Dia - Intake: 2.000in
Valve Pocket Depth - Exhaust: -.178in
Valve Pocket Dia - Exhaust: 2.000in
Sales Conditions: 9.5:1 w/ Screamin Eagle Heads