• Fit 1979-84, 80″ Big Twin engines• May be used in mild stroker engines with 4-1/4″ stroke flywheels• Forged pistons for superior strength• Modern alloys and piston skirt profiles or low noise and longer engine life• +.020″ oversized• 8:1 Compression
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- Replacement pistons available for stock 74in., 80in. and 35/8in. big-bore applications
- All pistons kits come with two pistons, rings, wrist pins, and wrist pin keepers
- Compression ratios listed are approximate and are calculated using the correct length cylinders as specified by S&S
- Requires the use of connecting rods with a rod length of 7.440in.(standard length OEM #24281-74A connecting rods); use of earlier connecting rods with a rod length of 7.470in. (OEM #24281-41A) will result in a slight increase in the compression ratio of about 1/2 point, and may also result in clearance problems (check all piston to cylinder head clearances carefully when using the early style rods)
- FORGED LOW COMPRESSION PISTONS, FOR 80in. STOCK MOTORS WITH 31/2in. BORE AND 41/4in. STROKE (8:1 C.R.)
