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Engine coolingPart report

2009 Buell 1125R Engine cooling Problems

Complaints
5about this part
Share
13%of 39 total for the year
Median mileage
2,800miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 5 complaints about the engine cooling of the 2009 Buell 1125R, 13% of the 39 complaints for this model year. Where a mileage was given, the median is 2,800 miles.

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.

“2009 Buell 1125R was riding on freeway when battery light came on and voltage started to drop. Intense heat to frame burning legs through heavy riding gear, smoke pouring from under the seat. Vehicle engine cut out suddenly as I approached home and luckily I had the clutch pulled in. Vehicle would not restart and ignition is dead.. Very common issue with 2009 1125's and luckily it failed on a residential street or I would have been seriously injured. Voltage regulator, stator failed parts on backorder due to the amount of failures.”

NHTSA complaint #10407318, filed 2011-06, 2,800 miles

“During highway speed operation of the motorcycle, there was an internal failure of the motor on the right side causing the rightside engine case to fracture and spray out all crankcase oil. The motor seized, and wholly failed.”

NHTSA complaint #10429986, filed 2011-10, 9,994 miles

“My 2009 Buell 1125R motorcycle uses a hydraulically actuated clutch. The clutch fluid began to leak out of the engine cover, emanating a drop of fluid for each time the clutch was disengaged. There is a limited amount of clutch fluid in the reservoir, and the leakage will eventually deplete the reservoir. Without fluid in the reservoir, the rider's ability to disengage the clutch is eliminated. This could result in a crash. The dealership ordered new parts that are designed to repair the problem. However, the new parts did not repair the leak. …”

NHTSA complaint #10324792, filed 2010-04, 7,500 miles

“The contact owns a 2009 harley davidson Buell 1125R motorcycle. The contact stated that the vehicle would stall frequently and without warning. In addition, the turn signals and gauges would become inoperative. The vehicle was taken to the dealer who replaced parts that were unknown to the contact. The repair did not correct the failure. The manufacturer was notified who offered no assistance. The failure mileage was 1,400 and the current mileage was 8,242.”

NHTSA complaint #10452480, filed 2012-03, 1,400 miles

“The contact owns a 2009 Buell 1125R. The contact stated that when the vehicle became hot and the engine fan would engage, the vehicle overheated and stalled. The vehicle was taken to the dealer where it was determined that the stator and the clutch had failed. The dealer replaced the original clutch and changed the wiring harness from a 4-charge to a 3-charge stator and clutch. The wiring harness failure also drained the battery prematurely. The contact changed the battery three times before discovering the failure. …”

NHTSA complaint #10510420, filed 2013-05, 1,400 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
2009513%
2008117%

Other parts of the 2009 Buell 1125R

Electrical system
32 complaints
Exterior lighting
4 complaints
Engine
3 complaints
Brakes
2 complaints
Vehicle speed control
2 complaints
Equipment
1 complaints
Fuel system
1 complaints
Transmission and drivetrain
1 complaints

← All problems reported for the 2009 Buell 1125R

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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