Harley-Davidson Fat Boy Tuning
Genuine HD tuning and aftermarket alternatives that fit the Fat Boy — all years. Select your year for exact fitment and pricing.
Genuine Harley-Davidson (2)
Aftermarket for your Fat Boy
Confirmed to fit your Fat Boy
Aftermarket tuning the supplier lists against the Fat Boy. Genuine Harley-Davidson is listed above, not here.
Diag4Bike
TUNING LICENSE FOR DIAG-4-BIKE
In stock
£188.51Iron Pass £179.08£184.74View
Daytona Twin Tec
WEGO III WIDE-BAND AIR-FUEL RATIO TUNING AID
In stock
£601.97Iron Pass £529.73£547.79View
Diag4Bike
DIAG-4-BIKE SERIAL DIAGNOSTIC & FLASH TUNING
In stock
£949.51Iron Pass £902.03£930.52View
Feuling
618 F Series Chain Drive Camshaft
In stock
£401.03Iron Pass £356.92£368.95View