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Demon’s Part # 4721P3
Mfg. Part # 4721P3
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Forged from high-silicon aluminum alloy for maximum strength and dependability. Innovative forging design and piston skirt provide maximum horsepower and torque. Wiseco High-Performance piston kits are priced with piston, rings, pins and circlips (unless noted otherwise). Oversize pistons require cylinder sleeving. SPECIFICATIONs. Displacement: 1221cc. Bore - Standard: 3.498in. Bore - Actual: 3.528in. Bore - Oversize: .030in. Stroke: 3.812in. Compression Ratio - Actual: 10.5:1. Dome Type: Domed. Engine Type: 73ci. Dome Volume: +10.7cc. Valve Pocket Depth - Intake: -.215in. Valve Pocket Dia - Intake: 2.100in. Valve Pocket Depth - Exhaust: -.215in. Valve Pocket Dia - Exhaust: 2.100in. Note: No cyl head mod. required. Note: Valve pocket dimensions measured from deck height. ITEM CONTENTs. 3527X - 89.52 mm Ring Set. S530 - PistonPin 20.1mm x 2.200in. Chromed Sw. W5731 - ROUND WIRE PIN LOCKS-HARLEY20MM (Pr.
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