Harley-Davidson Fat Boy Specs & History Decoder
Confirm engine displacement, factory options, and safety ratings for any Harley-Davidson Fat Boy year.
Verify specs before you buy.
About the Harley-Davidson Fat Boy
The Harley-Davidson Fat Boy is an icon in the Harley-Davidson lineup. Whether you're looking at a carbureted classic or a modern fuel-injected version, verified specs matter.
Our VIN decoder confirms the exact Model Year and Engine Size (114ci)—two of the most common things sellers misrepresent in used bike listings.
Common Harley-Davidson Fat Boy Issues
Based on NHTSA filings, Harley-Davidson Fat Boy owners should be aware of:
Electrical
Regulator/Rectifier failures or wiring loom chaffing
Mechanical
Cam chain tensioner wear or transmission clunks
Structural
Kickstand spring failures or frame weld recalls
Always check the specific VIN. A clean title doesn't mean a clean history.
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Harley-Davidson Fat Boy FAQ
Verify Your Fat Boy Before You Buy
Don't get stuck with a lemon. Check the VIN for hidden issues.