2004 American Ironhorse Thunder Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2004 American Ironhorse Thunder, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Transmission1100.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Transmission
Reports naming the automatic or manual transmission, including shifting behaviour, shudder, slipping and transmission control modules.
From owner reports, verbatim
INSTALED 2004 ROADMAX TRANSMISION 6 SPEED RIGHT SIDE DRIVE IN HARLEY TYPE BIKE. AFTER 1500 MILES WHILE TRAVELING 70-75 MPH TRASNSMISSION MAKES NOISE FOR LESS THAN ONE SECOND THEN LOCKS UP REAR WHEEL, CAUSING BIKE TO SKID TO STOP OFF ROADWAY. LUCKY NO ONE WAS FOLLOWING. TOOK BIKE BACK TO MY SHOP AND UPON INSPECTING TRANSMISSION I FOUND SNAP RING HOLDING MAINSHAFT IN PLACE WAS NOT PROPERLY MACHINED. THIS LETS SHAFT MOVE AND ALLOWS TRANSMISSION TO GO INTO 2 GEARS AT ONCE. OADMAX REPLACED TRANSMISSION. I KNOW THEY ARE AWARE THERE IS A PROBLEM WITH THIS PART AND ARE AWARE OF THE SERIOUSNESS OF PROBLEM. MERICAN IRONHORSE SELL A PRODUCTION BIKE WITH THIS TRANSMISSION AND HAS HAD FAILURES ACCORDING TO A COUPLE OF THEIR DEALERS.SOMEONE NEEDS TO DO SOMETHING TO GET THESE FIXED BEFORE THERE ARE SERIOUS INJURIES OR DEATH. OADMAX FACTORY REPRESENTATIVE IS NO LONGER WITH THIS KOREAN MANUFACTURE. A FRIEND TELLS ME FACTORY DOES NOT HAVE TO FOLLOW YOUR GUIDLINES FOR RECALL DUE TO NOT BEING AMERICAN FACTORY? WOULD LIKE TO SEE THIS INVESTIGATED AND FIXED. *AK
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .