2021 Harley-Davidson FLTRXS Road Glide Special — 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 2021 Harley-Davidson FLTRXS Road Glide Special.
Plastic Clutch Adjuster Failure
MediumThe 2021-specific plastic inline cable adjuster can snap or lose tension, leading to a loss of clutch control.
Commonly replaced with a Fat Baggers or Mueller metal adjuster.
expert builder pattern
high confidence
Engine Heat
LowThe 114 engine generates significant heat, particularly on the right side near the exhaust, which can be uncomfortable in stop-and-go traffic.
EITMS (Engine Idle Temperature Management System) helps by shutting off the rear cylinder at idle.
community pattern
high confidence
Compensator Rattle
MediumA recurring M8 platform issue where the compensator sprocket develops play, causing a rhythmic knocking sound from the primary.
Often fixed by installing a heavier-duty aftermarket compensator or spring pack.
community pattern
medium confidence
Used Buying Inspection Checklist
What to look for when buying a used 2021 Harley-Davidson FLTRXS Road Glide Special.
Clutch Engagement
Primary Noise
Oil Sumping Check
Infotainment Screen
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