2004 Bigdog Boxer, 2004 Bigdog Bulldog, 2004 Bigdog Chopper and 4 other models Recall: ON CERTAIN MOTORCYCLES, THE PISTON IN THE REAR MASTER CYLINDER MAY HAVE…
NHTSA campaign 04V137000 · Service Brakes, Hydraulic · filed Mar 23, 2004 · verified Jul 30, 2026
The defect
ON CERTAIN MOTORCYCLES, THE PISTON IN THE REAR MASTER CYLINDER MAY HAVE BEEN IMPROPERLY SIZED, WHICH COULD CAUSE THE REAR BRAKES TO DRAG OR LOCKUP.
The risk
THIS COULD RESULT IN A CRASH.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
DEALERS WILL REMOVE THE PISTON FROM THE REAR MASTER CYLINDER AND REPLACE IT WITH A NEW PISTON. OWNER NOTIFICATION BEGAN ON APRIL 12, 2004. OWNERS SHOULD CONTACT BIG DOG AT 1-316-267-9121.
CUSTOMERS CAN ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).
Affected vehicles
Related recalls
More Bigdog Boxer recalls
- 2004 Big Dog Bulldog and 5 other models — Electrical System
- 2005 Big Dog Chopper DT and 8 other models — ON CERTAIN MOTORCYCLES, THE KICKSTAND SPRING MAY STRETCH…
- 2004 Bigdog Boxer and 6 other models — ON CERTAIN MOTORCYCLES, THE KICKSTAND SPRING ATTACHING STUD…
- 2004 Bigdog Boxer and 5 other models — ON CERTAIN MOTORCYCLES, A SCREW MAY BECOME LOOSE IN THE…
- 2002 Bigdog Boxer and 2 other models — ON CERTAIN MOTORCYCLES, THE FUEL TANKS MAY HAVE BEEN…
Other campaigns involving Bigdog vehicles
Source: NHTSA recall database, campaign 04V137000. Data last verified Jul 30, 2026.