2019 Harley-Davidson FLHX Street Glide — Common Issues & Known Problems
Known Issues & Owner Reports
These are the most commonly reported issues and concerns from owners, mechanics, and community forums for the 2019 Harley-Davidson FLHX Street Glide.
Oil Sumping
HighOil builds up in the crankcase because the pump fails to scavenge it back to the tank, leading to friction, heat, and power loss.
Transmission-to-Primary Fluid Transfer
MediumTransmission oil migrates past the mainshaft seal into the primary case.
Hydraulic Clutch Failure
HighThe clutch slave cylinder can leak internally, preventing the clutch from fully disengaging.
Used Buying Inspection Checklist
What to look for when buying a used 2019 Harley-Davidson FLHX Street Glide.
Primary Oil Level
Check for 'fluid transfer' where transmission oil migrates into the primary, causing overfilling of the primary and low levels in the trans.
Sumping Symptoms
Look for oil in the air cleaner or excessive heat/power loss after highway runs, indicative of a failing oil pump scavenge side.
Infotainment Functionality
Test the Boom! Box system for screen delamination or lag, especially if it hasn't been updated to the latest software.
Clutch Engagement
Early 2019 models may still have the hydraulic clutch issue where the clutch fails to disengage properly.
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