2008 Harley-Davidson Flhtcu Transmission and drivetrain Problems
- Complaints
- 9about this part
- Share
- 11%of 81 total for the year
- Median mileage
- 23,032miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the transmission and drivetrain of the 2008 Harley-Davidson Flhtcu, 11% of the 81 complaints for this model year. Where a mileage was given, the median is 23,032 miles. 1 of these say a crash was involved, according to the filers.
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.
“Stock compensator on 2008 ultra classic failed and now have to pay for replacement to put the upgraded one in. Lucky I was not traveling at highway speeds or I would have been killed. Harley is aware there is a problem and refuse to fix the problem. The stock compensator is inferior to the upgrade and harley now puts the upgrade stock on the 2011 bikes. I feel this should be replaced at not cost since it is a safety issue.”
NHTSA complaint #10404131, filed 2011-06, 15,000 miles“My compensator went bad about a year ago while my bike was still under extended warranty. The dealer said it was just normal noise. Now come to find out harley davidson knows they have a problem with their compensator. They don't even last 20,00 miles and I think they should recall them. All you have to do is go on the harley davidson forums and there you will find all kinds of mad owners that this has happened to. They know about it and won't do anything about it. I thought the whole point of a recall is when the part is at default they should get fixed.”
NHTSA complaint #10782039, filed 2015-10, 49,312 miles“In april 2012 I was experiencing loud noises from the primary side of my 96 v twin engine and it would not start. Upon inspection by a certified harley tech. It was discovered the entire clutch assembly and compensator sprocket were damaged due to the disintegration of the splines and gears. As advised by harley davidson, their supplier shipped these parts without heat treating them . I was never advised this was a problem by harley. The parts were replaced with harleys heavy duty screamin eagle compensator and the bike ran fine up until the winter of 2014. …”
NHTSA complaint #10681818, filed 2015-02, 29,985 miles“While driving my 2008 harley ultra classic the bike began to skid and vibrate at 50 MPH. Thought I was going down then began to free up, and I stopped. Called for pickup and transferred to harley shop in tyler, tx I ask to ck compensator sprocket as was told same day when getting new tires at another shop the compensator sprocket was going out. Have not received bike from harley shop but they have confirmed that compensator sprocket ordered and upgraded from existing sprocket. I am aware of other compensator sprockets going out on 08 models. …”
NHTSA complaint #10419889, filed 2011-08, 20,000 miles“Out for an afternoon ride with friends on my 08 electra glide ultra classic. While entering a left curve, the throttle accelerated on its own. This caused the bike to speed up unexpectedly and drift right. Tried retarding the throttle and got no response. Depressed the clutch and applied rear brakes in attempt to slow the bike down without results. This resulted in a serious single rider crash with life threatening injuries. This bike has fly-by-wire throttle. Harley davidson customer service states that they have been aware of throttle issues with the new touring models since summer of 2007. …”
NHTSA complaint #10239666, filed 2008-08, 500 milesRelated service bulletins
- 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…
- 10254115Apr 4, 2024SERVICE BULLETIN M1612 (REV A): MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: Revision. Update: Notes for Table 3 and 4. * Updated: Part Numbers. This bulletin…
- 10248398Dec 4, 2023SERVICE BULLETIN M1612: MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: This bulletin informs dealers that all: ⢠Twin Cam gear packs on CVO, Dyna, Police…
- 10248397Dec 4, 2023SERVICE BULLETIN M1612: MILWAUKEE-EIGHT AND TWIN CAM TRANSMISSION GEAR PACKS. Purpose: This bulletin informs dealers that all: ⢠Twin Cam gear packs on CVO, Dyna, Police…
- 10139399Apr 27, 2018TECH ARTICLE TA0023: TA0023: Crankshaft Rod Bearing. Purpose: Technicians have been falsely identifying connecting rod bearings as failed due to a perception of resistance as the…
Transmission and drivetrain: other model years
Other parts of the 2008 Harley-Davidson Flhtcu
36 complaintsFuel system
12 complaintsElectrical system
6 complaintsEngine cooling
6 complaintsVehicle speed control
4 complaintsEngine
3 complaintsOther or unknown
3 complaintsSuspension
3 complaintsTires
3 complaintsWheels
3 complaintsSteering
2 complaintsBody and structure
2 complaints
← All problems reported for the 2008 Harley-Davidson Flhtcu
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