2021 Harley-Davidson RH1250S Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2021 Harley-Davidson RH1250S, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Engine266.7%
- Body & structure133.3%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
While riding the motorcycle, engine suddenly began making a loud clacking noise. Brought motorcycle in to Harley Davidson dealer and it was diagnosed that they cam chain tensior had become loose and was destroyed inside the engine causing small bits of metal to clog oil ports and damage the engine. The remedy was an engine replacement. Through deliberate research this appears to be an issue with the 2021-2023 model year Sportster S Harley-Davidson motorcycles and should be recalled to remedy the issue before engine failure due to manufacturing negligence.
There is a known issue with he engines in these motorcycles where the bolt for the timing chain tensioner comes loose and causes excessive wear in the timing chain guid with causes the timing chain tensioner to come apart inside of the engine which will cause the engine to have to be replaced due to loose metal fragments in the engine. I went to my local dealer yesterday 12/27/2025 to talk to them about my issues and one of the mechanics pulled me back too look at a bike with the same issue and the engines was completely disassembled so they can fix it.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
The contact owns a 2021 Harley-Davidson RH1250S. The contact stated that the motorcycle was ridden 17-miles to work. The contact stated that after completing the workday and riding back to the residence, there was an abnormal whizzing sound coming from the motorcycle while riding on the Interstate. There were no warning lights illuminated. The contact stated that the bolts on the frame tube were damaged. The contact stated that another motorist motioned for him to stop. The contact pulled over and noticed that the hold assembly had detached from the motorcycle and was being dragged by the signal and brake lights. The bolts had sheared off. The local dealer was not contacted. The motorcycle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 11,941.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .