Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 0 of 1 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Power Train. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
1 crash reports0 fire reports0 injury reports
What owners actually said
1 reports
Mileage unknown · Jan 28, 2005
Power TrainCrash
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 …
Read full complaint
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
ON CERTAIN MOTORCYCLES EQUIPPED WITH OPTIONAL BRAKE ROTOR-CARRIERS,THE ROTOR-CARRIERS CAN CRACK WHILE IN SERVICE AND POSSIBLY BREAK.
Consequence & remedy
Consequence: THIS CAN CAUSE A PARTIAL LOSS OF THE BRAKE SYSTEM OR THE POTENTIAL FOR ROTOR-CARRIER DETACHMENT, WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS WILL REPLACE THE ROTOR-CARRIER ASSEMBLY. OWNER NOTIFICATION BEGAN JANUARY 26, 2004. OWNERS SHOULD CONTACT AMERICAN IRONHORSE AT 1-817-665-2045.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
2004 American Ironhorse Thunder Problems, Complaints & Recalls | Skip That Year
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