Reference library
Guides
Practical, no-fluff reference material for identifying vintage Harley engines, decoding pre-1980 VINs, and knowing what to look for when you buy one. Same writing voice as the rest of the shop — we'd hand these to a customer over the counter.
Engine identification · 8 min read
How to identify a vintage Harley engine
Knucklehead, Panhead, Shovelhead, Ironhead, Evolution, Twin Cam — six generations of Harley big-twin and Sportster engines, identified by visual cues, production years, and common rebuild parts.
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Visual ID · 5 min read
Panhead vs Knucklehead: how to tell them apart
The single most-confused pair of Harley engines. Side-by-side identification by rocker covers, oil routing, lifters, and case features.
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VIN format · 6 min read
How to read a pre-1980 Harley VIN
Before standardized 17-digit VINs, Harleys used short engine-number codes. Year, model, and engine prefix decoded here, with examples from FL, FX, XL, and Sportster lines.
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Buying a vintage Harley · 10 min read
Shovelhead buyer’s guide
What to look for when buying a 1966-1984 Shovelhead. Common failure points, what’s expensive to fix, generator vs alternator differences, AMF-era cases vs Genuine, and a pre-purchase checklist.
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Buying a vintage Harley · 8 min read
Sportster buyer’s guide
Ironhead, Evo, and rubber-mount era Sportsters explained. What’s good vs problematic in each, era-specific failure points to inspect, and 2026 fair pricing.
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Restoration · 7 min read
Top-end rebuild parts checklist
Everything that should be on the bench before you crack the first head bolt. Era-specific additions for Knuckle/Pan/Shovel/Ironhead/Evo, plus the small parts people always forget.
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First-time buyers · 12 min read
How to buy a vintage Harley without getting burned
A buyer’s workflow for first-time vintage Harley shoppers. Reading a listing, in-person inspection, red flags, negotiation, and 2026 fair value across all the major generations.
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Tools
Pre-1980 VIN decoder
Paste your bike's engine number and we'll decode the year, model family, and engine prefix. Pairs with the VIN format guide above.
Open VIN decoder →Looking for a specific part?
We probably have it — or can find it
The garage carries 275+ vintage parts across Knucklehead through Twin Cam. If it's not listed, tell us what you need — we source for customers all the time.