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S&S Cycle
$81.95
Bikers Choice
$43.00
Bikers Choice
$41.97
Bikers Choice
$65.52
Bikers Choice
$8.18
S&S Cycle
$599.95
TwinPower
$235.51
S&S Cycle
$36.33
Cometic Gasket
$13.22
S&S Cycle
$31.95
TwinPower
$101.36
S&S Cycle
$70.95
S&S Cycle
$349.95
TwinPower
$301.04
Kuryakyn
$174.07
TwinPower
$24.56
S&S Cycle
$20.16
TwinPower
$139.25
Bikers Choice
$31.73
S&S Cycle
$165.67
Yes, all parts displayed on this page are verified to fit the 1990 Harley-Davidson FLSTF Fat Boy using VCDB fitment data. Our fitment information comes directly from manufacturers and is cross-referenced with industry-standard vehicle databases.
We offer a wide selection of engine & drivetrain parts specifically designed for the 1990 Harley-Davidson FLSTF Fat Boy. All parts shown are verified for fitment and include detailed product information to help you choose the right option.
We carry parts from trusted brands including S&S Cycle, TwinPower, Bikers Choice, Cometic Gasket, and Kuryakyn, plus many more. Filter by brand to find your preferred manufacturer.
Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.
Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.