Stroker Pistons for 1972-'85 HD<sup>®</sup> Sportster<sup>®</sup> Models - 3-3/16" +.010"

Stroker Pistons for 1972-'85 HD® Sportster® Models - 3-3/16" +.010"

Item #: 106-5542
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$333.95
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These 3-3/16" +.010" bore stroker pistons are part of an S&S stock bore stroker kit, and are designed to be used in conjunction with S&S® 4-5/8" stroke flywheels to convert 1000cc ironhead engines in 1972-'85 HD® Sportster® models to 1200cc (74") displacement at 9:1 compression. These pistons are normally used in stock HD® cylinders, and must be purchased separately, based on the required piston oversize. No cylinders are available from S&S® for HD® ironhead Sportster® models. These pistons may also be used to rebuild older S&S® stroker engines with 4-1/16" 4-9/16" 4-1/2" and 4-13/16" stroke flywheels. All clearances must be checked If replacing the pistons in a older S&S 77" (4-13/16" stroke) stroker engine, stroker plates are required, and all clearances must be checked. S&S® offers machine shop services through the S&S® remanufacturing program. New pistons can be fit to your existing cylinders for a reasonable charge.

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If replacing the pistons in a older 77" stroker engine, stroker plates are required, and all clearances must be checked. S&S offers machine shop services through the S&S Service & Speed Center®. New pistons can be fit to your existing cylinders for a reasonable charge. See page 10-4.