Evolution 83 inch Big Bore bolt on black cylinder kit includes 10:1 compression Wiseco forged piston kit which has been honed for final fitment. Cylinders are aluminum and features a cast in steel sleeve. Kit includes a front and rear piston. No case boring required. *NOTE: Must order top end gasket separately. *NOTE: We suggest to always check for clearence before final installation. FITS HARLEY: 1984-1998 FXST, 1984-1994 FXR, 1986-1998 FLST, 1984-1998 FLT, 1991-1998 FXD,
MFG Part #:
Technote: Suggested to use with #15-0414 Head Base Gasket Kit.
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