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Product & Series Guides
Field notes, build logs and product briefings from the MotoIrons factory floor - vintage front ends, handlebars, electrics and sissy bars.
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Latest from Product & Series Guides
Build logs · Fitment notes · Factory updates
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Product & Series Guides Wholesale Harley Voltage Regulator: Fitment and Specs by Model
Correct Harley voltage regulator fitment depends on matching stator output phase and connector pinout, not just OEM part numbers. Mismatches cause immediate short circuits...
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Product & Series Guides Wholesale Big Twin Charging System Parts: Rotor, Stator, Regulator
Most Big Twin charging system parts failures stem from fitment errors rather than part quality. Correct selection requires matching stator phase, rotor type, and...
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Product & Series Guides Sportster XL Sissy Bars Fitment by Model Year Wholesale Supplier
Eliminate costly returns by mastering Sportster XL sissy bar fitment by year, which varies significantly between Custom and Roadster sub-models. Verify rear fender strut...
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Product & Series Guides Wholesale Softail FL Sissy Bars (1984-Up) Fitment Options
Ensure accurate Softail sissy bar fitment 1984-up by verifying strut spacing and fender configurations instead of relying on model years. Prevent costly returns with...
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Product & Series Guides Wholesale 12-Inch to 16-Inch Ape Hangers: Size Guide with Photos
Master the 12-16 inch ape hangers size guide to prevent cable tension and wiring failures in custom builds. Prioritize pullback angle and internal hole...
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Product & Series Guides Wholesale Springer Front End Lengths: Stock, +2, +4 and +6
Verify springer front end lengths for stock, +2, +4, and +6 options to prevent fitment errors on Harley-Davidson frames. Extended forks alter rake and...
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Vintage front ends, ape hangers, charging-system parts and sissy bars - fitment confirmed before production, with chrome, black powder coat, copper plate or raw metal finishes.