Black 4.250 inch big bore cylinder set with machined edge fins increase the bore size from 124 inch to 128 inch. Features a slightly larger fin area for better heat dissipation and increased cooling. For use with stock 4.375 inch flywheels and does not requires case boring. *NOTE: Must order piston set separately. FITS HARLEY: 2017-2023 FLT, 2018-2023 FXB,
MFG Part #: 88186
Technote: Required to use with #11-9983 M-8 Wiseco Piston Kit.
Dimensions: Spigot O.D.: 4-3/8 inches
Replaces OEM:
Made in: CHINA
NOTE: Part installation instructions are not provided unless a link is shown below:
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