* Requires S&S Piston kit SS92-2016 or SS92-1081
* XL 1986-1990 need threaded insert CCI # 58180 to sleve down the breather holes from 3/8 to 5/16
* Takes Big Twin 1984-99 spark plugs
Cylinder Head Kit with Black Finish. Fits Sportster 1986-2003.
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