Our research traced Harley-Davidson from the 1903 prototype through the 1929 JD – the founding era of the American motorcycle. Verified specs, engine history, and the Silent Gray Fellow, F-head V-twin, and Wrecking Crew racing program, all in one guide.
Category: Makes
Best Battery Tender for Harley-Davidson (2026): 6 Chargers Compared
Our research team compared six battery tenders and smart chargers for Harley-Davidson motorcycles – from the classic Battery Tender Junior to the NOCO GENIUS series – covering AGM and lithium battery compatibility, SAE pigtail systems, and HD Service Manual charging specs.
Harley-Davidson Engine Size Chart: Every Displacement by Family and Year (2026)
Complete Harley-Davidson engine displacement chart: every engine family from Flathead to Milwaukee-Eight, with exact cc and cubic-inch specs verified against service manuals. Twin Cam 88/96/103, Evolution 883/1200, M8 107/114/117, Revolution Max. Updated 2026.
How to Change Grips on a Harley-Davidson (2026 Guide: ETC + Cable Throttle)
Step-by-step guide to replacing handlebar grips on a Harley-Davidson. Covers both ETC throttle-by-wire (2008+) and cable-throttle models, grip adhesive specs from HD service manuals, and common mistakes to avoid.
How to Adjust Idle on a Fuel Injected Harley-Davidson (2026)
EFI Harleys have no idle adjustment screw – idle is ECM-controlled through the IAC valve. Here is what actually works: ECM idle relearn, throttle body cleaning, and tuner-based idle correction. Factory spec: 950-1050 RPM (HD Service Manual).
How to Choose a Harley Davidson Model for Your Next Motorcycle?
Our research team compared specs, service manual data, and thousands of forum threads to build this practical guide to choosing the right Harley-Davidson model for your riding style and budget in 2026.
What Is the Harley-Davidson Dyna? (FXD Platform Guide, 2026)
The Harley-Davidson Dyna (FXD platform, 1991-2017) used a rubber-mounted Twin Cam engine and exposed dual rear shocks to set itself apart from the Softail. Here’s the full model lineup, engine specs from the service manual, why it was discontinued in 2018, and which Dyna models are collectible in 2026.
6 Most Comfortable Seats for Harley Davidson Sportster (2026)
The stock Sportster seat won’t carry you far. Our research desk compared six aftermarket comfort seats for the Iron 883, Forty-Eight, and 1200 Custom – from Mustang’s foam benchmark to Le Pera’s low-rider Bare Bones.
What Is the Harley-Davidson Deuce? (FXSTD Complete Guide, 2026)
The Harley-Davidson Softail Deuce (FXSTD/FXSTDI) is a factory-custom Softail cruiser built from 2000 to 2007. Designed by Willie G. Davidson, it features a stretched 4.9-gallon tank, 21-inch front wheel, Twin Cam 88B/96B counterbalanced engine, and a drag-strip silhouette unlike any other stock Harley. As of 2026, clean examples trade as modern collectibles. Full specs, production history, FXSTD vs FXSTDI breakdown, and used buyer checklist.