2018 Harley-Davidson Flhx Transmission and drivetrain Problems
- Complaints
- 5about this part
- Share
- 63%of 8 total for the year
- Median mileage
- 2,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the transmission and drivetrain of the 2018 Harley-Davidson Flhx, 63% of the 8 complaints for this model year. Where a mileage was given, the median is 2,000 miles. 1 recall campaign on record is filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I have a 2018 street glide and had the clutch actuator recall work performed at the dealer this past winter. It failed sunday and I was broke down. Harley dealer claimed they replaced it today all was well come get the bike.. As I was leaving the dealer with my so called fixed motorcycle I got of the highway on an off ramp the clutch lever had no resistance and did not respond as I was trying to gear down for my anticipated departure from the hwy! This could have killed me !! …”
NHTSA complaint #11222829, filed 2019-06, 15 miles“Clutch stopped working at about 4600 miles after 1,000 trip day before weather temp to 37 degrees went to leave house got to stop sign on city street 1/4 block from house, upon trying to use clutch to stop, no clutch came close to losing control, if had been any faster or out on road would have had accident”
NHTSA complaint #11204637, filed 2019-04, 4,600 miles“Clutch safety switch intermittently not working. Can not be started in gear with clutch lever pulled in. Causes engine to idle rough and stall in traffic when idling at intersections.”
NHTSA complaint #11326749, filed 2020-06, 500 miles“Transmission is losing oil into primary. It over fills the primary while draining the transmission of needed lubrication. An overfilled primary can cause hard shifts, and could potentially damage the clutch.”
NHTSA complaint #11142210, filed 2018-10, 3,500 milesRelated recalls
- 18V734000Oct 18, 2018Harley-Davidson Motor Company (Harley-Davidson) is recalling certain 2017-2018 Police Road King (FLHP), Road King (FLHR), Road King Special (FLHRXS), Electra…Covers: Harley-Davidson Flhx 2017–2018, Flhtk 2017–2018, Flhtcutg 2017–2018 +17 more
Related service bulletins
- 11037861Sep 17, 2026SERVICE BULLETIN M1490 (V 26.9.4): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley-Davidson has made a software…
- 11036578Aug 14, 2026SERVICE BULLETIN M1733: COSMETIC CYLINDER STAINING (ALL MILWAUKEE-EIGHT MODELS). PURPOSE: Initial release. This bulletin informs dealers that cosmetic staining or etching on the…
- 11035941Jul 25, 2026SERVICE BULLETIN M1490 (V 26.8.3): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley-Davidson has made a software…
- 11032452Apr 24, 2026SERVICE BULLETIN M1490 (V 26.6.2): DIGITAL TECHNICIAN II - UPDATES AND RELEASE NOTES. PURPOSE: Revision. This bulletin informs dealers that Harley-Davidson has made a software…
- 11028618Jan 28, 2026SERVICE BULLETIN M1713 (REV B): DTII UPDATE PROCEDURE FOR SOFTWARE VERSION (26.3.2). PURPOSE: Revision B. This bulletin informs dealers that an issue was discovered in the…
- 11021201Jul 1, 2025SERVICE BULLETIN M1611 (REV B): MILWAUKEE-EIGHT TRANSMISSION SHIFT DRUM UPDATE. PURPOSE: Revision. This bulletin informs dealers that (Part No. 33900172) is obsolete. Dealers…
- 11015450Feb 11, 2025GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1165: H-D SYN3 SAE 15W50 / SAE 50 AVAILABILITY. PURPOSE: This bulletin informs of the availability of the SYN3 New Improved…
- 11014011Jan 29, 2025SERVICE BULLETIN M1611 (REV A): MILWAUKEE-EIGHT TRANSMISSION SHIFT DRUM UPDATE. PURPOSE: This bulletin informs dealers that (Part No. 33900172) is obsolete. Dealers must purchase…
- 11014014Jan 24, 2025SERVICE BULLETIN M1650: MILWAUKEE EIGHT AND TWIN CAM CAMSHAFT DRIVE GEAR RETENTION KIT CHANGES. PURPOSE: This bulletin informs dealers that changes have been made to the Camshaft…
- 11005514Jul 10, 2024GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1158: OIL FILTER PACKAGING AND CASE QUANTITY UPDATE. PURPOSE: To inform dealerships that Harley-Davidson has made updates to…
Transmission and drivetrain: other model years
Other parts of the 2018 Harley-Davidson Flhx
2 complaintsEngine
1 complaintsOther or unknown
1 complaintsSteering
1 complaintsWheels
1 complaints
← All problems reported for the 2018 Harley-Davidson Flhx
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology