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Vehicle recall 77V164000 · September 28, 1977

Harley-Davidson 1200CC FX, 1200CC FXE and 1 more model

An incorrect o-ring may have been installed in the rear brake master cylinder.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary
An incorrect o-ring may have been installed in the rear brake master cylinder. This could allow air leakage into the rear brake system, possibly resulting in loss of rear braking effectiveness.
Remedy
Dealer will inspect and, if necessary, install the correct master cylinder o-ring without charge to owner.
Notes
Vehicle description: motorcycles.system: service brakes; master cylinder, o-ring.consequences of defect: loss of rear brakes could occur without prior warningand could lead to a loss of vehicle control and an accident.

Recall details

NHTSA campaign
77V164000
Reported to NHTSA
September 28, 1977
Filed by
HARLEY-DAVIDSON MOTOR CO.
Owner notification
September 20, 1977
Vehicles potentially affected
385
Initiated by
the manufacturer
Components
Service brakes, hydraulic › Foundation components › Master cylinder
Recall 77V164000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Has your Harley-Davidson been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Harley-Davidson dealer can also check your VIN. Recall repairs are free.