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2011 HARLEY-DAVIDSON Flhtk

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 18 of 20 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Service Brakes. Review the 11 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes, Hydraulic. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

2 crash reports0 fire reports0 injury reports

What owners actually said

20 reports
22,000 miles · Nov 6, 2023
Service Brakes, Hydraulic

The contact owns a 2011 Harley-Davidson FLHTK Electra Glide Ultra. The contact stated that the vehicle was taken to the dealer, where the recall repair for NHTSA Campaign Number: 18V076000 (Services Brakes, Hydraulic) was performed; however, while riding and coming to a complete stop, the front brake was engaged but failed to re…

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The contact owns a 2011 Harley-Davidson FLHTK Electra Glide Ultra. The contact stated that the vehicle was taken to the dealer, where the recall repair for NHTSA Campaign Number: 18V076000 (Services Brakes, Hydraulic) was performed; however, while riding and coming to a complete stop, the front brake was engaged but failed to respond. The contact was able to stop the motorcycle by engaging the rear brake. The contact stated that the front brake was inoperable. The dealer was notified of the failure and charged a fee for the repair. The motorcycle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 22,000.

NHTSA ODI #11553821

12,167 miles · May 4, 2020
Service Brakes

WHEN I WENT TO APPLY THE REAR BRAKE THE PEDAL WAS SOLID AND BRAKES WOULD NOT ENGAGE. I NARROWLY AVOIDED CRASHING BUT NOT MY BIKE IS NOT SAFE TO RIDE. AFTER RESEARCH I HAVE FOUND THAT HARLEY HAS BEEN AWARE OF ABS FAILURE FOR MANY YEARS THAT WAS CAUSED BY POOR DESIGN OF THEIR ABS SYSTEM. HOWEVER IT IS UP TO THE CONSUMER TO REPLACE…

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WHEN I WENT TO APPLY THE REAR BRAKE THE PEDAL WAS SOLID AND BRAKES WOULD NOT ENGAGE. I NARROWLY AVOIDED CRASHING BUT NOT MY BIKE IS NOT SAFE TO RIDE. AFTER RESEARCH I HAVE FOUND THAT HARLEY HAS BEEN AWARE OF ABS FAILURE FOR MANY YEARS THAT WAS CAUSED BY POOR DESIGN OF THEIR ABS SYSTEM. HOWEVER IT IS UP TO THE CONSUMER TO REPLACE THE PART. THEIR RECALL STATES TO CHANGE BRAKE FLUID EVERY TWO YEARS. HOWEVER OTHER VEHICLES WITH TH ESAME BRAKE FLUID HAVE NO ISSUES.

NHTSA ODI #11323169

48,000 miles · Mar 4, 2020
Electrical SystemEnginePower Train

I HAD JUST PULLED OUT ONTO THE HIGHWAY IN HIGH TRAFFIC AREA AND MY MOTORCYCLE STARTED PRODUCING A CLANKING NOISE FROM THE PRIMARY CASE AND AFTER DOING EXTENSIVE RESEARCH, COME TO THE CONCLUSION THAT THE PRIMARY COMPENSATOR WAS FAILING. AT THE TIME THIS HAPPENED, MY CYCLE ALSO DROPPED VOLTAGE FROM 14.8 VOLTS DC DOWN TO 8 OR 9 VOL…

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I HAD JUST PULLED OUT ONTO THE HIGHWAY IN HIGH TRAFFIC AREA AND MY MOTORCYCLE STARTED PRODUCING A CLANKING NOISE FROM THE PRIMARY CASE AND AFTER DOING EXTENSIVE RESEARCH, COME TO THE CONCLUSION THAT THE PRIMARY COMPENSATOR WAS FAILING. AT THE TIME THIS HAPPENED, MY CYCLE ALSO DROPPED VOLTAGE FROM 14.8 VOLTS DC DOWN TO 8 OR 9 VOLTS DC AND CAUSED THE CYCLE TO BOG, AND LOST MECHANICAL POWER ON A HILL WITH HIGH TRAFFIC FROM BOTH DIRECTIONS ON A HEAVILY TRAFFICKED MAIN U.S. HIGHWAY. HAD IT BEEN DAYLIGHT, THE ISSUE COULD HAVE COSTED MY LIFE HAD IT NOT BEEN FROM THE GLOW OF MY EMERGENCY FLASHERS GLOWING IN THE DARK NIGHT, BLINKING. THIS WAS VERY DANGEROUS BECAUSE THERE WAS NO WHERE TO PULL OFF OF THE ROAD DUE TO AN 11 FOOT DROP OFF. THIS IS AND HAS BEEN A COMMONLY KNOWN ISSUE FOR SEVERAL YEAR HARLEY DAVIDSON MODELS AND ARE ALL STILL HAS NOT BEEN ISSUED FOR THE COMPENSATOR FAILING DANGEROUSLY. AT TIMES, THERE HAVE ALSO BEEN CASES OF THEM DISMANTLING THEMSELVES AND CAUSING SERIOUS INJURY AND DEATH BEFORE NOW AND ALMOST CAUSED DEATH OF MY OWN DUE TO WHEN AND WHERE IT HAPPENED.

NHTSA ODI #11316186

32,000 miles · Jul 6, 2018
Service Brakes

HAD BRAKE RECALL DONE FOR BRAKE FLUSHING BUT INTERMITTENTLY THE BRAKE PEDAL GET HARD AND WILL NOT STOP THE VEHICLE WITH THE REAR BRAKE. HARLEY DEALER FLUSHED THE FLUID BUT THERE IS A PROBLEM WITH THE ABS CONTROLLER AND THEY SAY THAT'S NOT PART OF THE RECALL. I HAVE FLUSHED THE FLUID EVERY YEAR BY MYSELF SO IT IS NOT A FLUID PRO…

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HAD BRAKE RECALL DONE FOR BRAKE FLUSHING BUT INTERMITTENTLY THE BRAKE PEDAL GET HARD AND WILL NOT STOP THE VEHICLE WITH THE REAR BRAKE. HARLEY DEALER FLUSHED THE FLUID BUT THERE IS A PROBLEM WITH THE ABS CONTROLLER AND THEY SAY THAT'S NOT PART OF THE RECALL. I HAVE FLUSHED THE FLUID EVERY YEAR BY MYSELF SO IT IS NOT A FLUID PROBLEM ALTHOUGH HARLEY WON'T ADMIT IT. THEY HAVE SINCE CHANGED TO ANOTHER SUBLET MANUFACTURER (BOSCH) TO MAKE THEIR NEW CONTROLLERS. I THINK MINE SHOULD BE REPLACED BY THE FACTORY AT NO CHARGE FOR THEIR DEFECTIVE CONTROLER.

NHTSA ODI #11109787

31,000 miles · Apr 6, 2018
Service Brakes

LOSS OF BRAKING- AFTER SERVICE OF BRAKE FLUID RECALL- BRAKES FAILED AT 70 MPH ON FREEWAY. THE FRONT BRAKE HANDLE BECAME STIFF AND HAD NO MOVEMENT OR BRAKING.

NHTSA ODI #11083544

22,044 miles · Jan 6, 2018
Service Brakes

FRONT BRAKE HANDLE BECAME FROZEN....COULD NOT SQUEEZE HANDLE TO OPERATE FRONT BRAKES. ONLY DROVE A VERY SHORT DISTANCE BEFORE I REALIZED I HAD NO FRONT BRAKES....PUT BIKE BACK INTO GARAGE AND CALLED TO SCHEDULE A SERVICE APPOINTMENT. HARLEY REPAIR SHOP QUICKLY DETERMINED SOURCE OF PROBLEM...A DEFECTIVE ABS MODULE. THEY INDICATE…

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FRONT BRAKE HANDLE BECAME FROZEN....COULD NOT SQUEEZE HANDLE TO OPERATE FRONT BRAKES. ONLY DROVE A VERY SHORT DISTANCE BEFORE I REALIZED I HAD NO FRONT BRAKES....PUT BIKE BACK INTO GARAGE AND CALLED TO SCHEDULE A SERVICE APPOINTMENT. HARLEY REPAIR SHOP QUICKLY DETERMINED SOURCE OF PROBLEM...A DEFECTIVE ABS MODULE. THEY INDICATED THEY HAD SEEN OTHER BIKES WITH THIS SAME PROBLEM. VERY DANGEROUS SITUATION. IF I HADN'T NOTICED PROBLEM AS SOON AS I TOOK OFF, AND HAD TO STOP QUICKLY IN TRAFFIC, I WOULD HAVE BEEN IN SERIOUS TROUBLE. I CALLED HARLEY CUSTOMER SERVICE AS WAS TOLD THAT THEY ARE NOT PROVIDING WARRANTY COVERAGE FOR THIS DEFECT. I BELIEVE THEY SHOULD RECALL THE BIKES TO INSPECT THE PART.

NHTSA ODI #11060864

17,925 miles · Aug 9, 2017
Service Brakes

MY FRONT BREAK FROZE AND WOULD NOT WORK HAD TO STOP WITH BACK BRAKE THERE WAS NO WARNING IF I WERE GOING FAST I WAS GOING FAST I WOULD HAVE HIT THE CAR IN FRONT OF ME I TOOK IT BACK TO HARLEY SHOP THAY REPLACED HYDRONIC PUMP 825.00 THERE WAS NO WARNING IT FROZE

NHTSA ODI #11013998

30 miles · Jul 16, 2017
Structure

LEFT SADDLEBAG CAME OFF WHILE TRAVELING 65 MPH ON 4 LANE ROAD. CAUSED MANY VEHICLES BEHIND ME TO QUICKLY AVOID HITTING IT. THE CONNECTING STUDS VIBRATED LOOSE CAUSING THIS TO FALL OFF. NOT TO MENTION AN ESTIMATE OF 600,00 DOLLARS TO REPAIR SADDLEBAG. THIS INCIDENT COULD HAVE CAUSED A SERIOUS ACCIDENT FOR VEHICLES BEHIND.

NHTSA ODI #11005602

13,300 miles · Jun 7, 2017
Service Brakes

I EXPERIENCED FRONT BRAKE ISSUES ON MY MOTORCYCLE THAT I BELIEVE TO BE RELATED TO THE ABS SYSTEM. WHEN THE PROBLEM OCCURED, WITH THE MOTORCYCLE IN MOTION, ON A STATE HIGHWAY BEING OPERATED AT THE SPEED LIMIT OF 45 MPH, THE FRONT BRAKE LEVER FAILED TO DEPRESS UNDER NORMAL PRESSURE, AND WOULD ONLY ENGAGE IF I PLACED AN UNREASONABL…

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I EXPERIENCED FRONT BRAKE ISSUES ON MY MOTORCYCLE THAT I BELIEVE TO BE RELATED TO THE ABS SYSTEM. WHEN THE PROBLEM OCCURED, WITH THE MOTORCYCLE IN MOTION, ON A STATE HIGHWAY BEING OPERATED AT THE SPEED LIMIT OF 45 MPH, THE FRONT BRAKE LEVER FAILED TO DEPRESS UNDER NORMAL PRESSURE, AND WOULD ONLY ENGAGE IF I PLACED AN UNREASONABLE AMOUNT OF FORCE ON THE BRAKE LEVER. THIS CONDITION CAUSED ME TO HAVE TO PANIC STOP USING ONLY THE ENGINE COMPRESSION AND REAR BRAKE. THIS IS ON A MOTORCYCLE THAT I PURCHASED FROM AN OEM DEALERSHIP LESS THAN 24 MONTHS AGO, THEREFORE THE RECOMMENDED TIME INTERVAL FOR BRAKE FLUID SERVICE HAD NOT BEEN REACHED YET, UNLESS THE DEALER FAILED TO PERFORM THIS SAFETY CRITICAL MAINTENANCE BEFORE SELLING THE MOTORCYCLE. I DISCONTINUED USE OF THE VEHICLE AND BROUGHT IT TO THE DEALERSHIP TO HAVE THIS ISSUE RESOLVED.

NHTSA ODI #10993858

46,670 miles · Jan 5, 2017
Service Brakes

HAD AN ISSUE WITH THE ABS MODULE GOING BAD. I HAD NO WARNING LIGHT, NO PREVIOUS PROBLEMS WITH THE BRAKE SYSTEM AT ALL. WHEN GETTING OFF THE INTERSTATE AT 70 MPH COMING UP TO A STOP SIGN THERE WAS NO FRONT BRAKE AT ALL. THE LEVER WAS HARD AS A ROCK AND WOULD NOT PULL AT ALL. HARLEY SAYS IT'S FROM NOT FLUSHING THE FLUID, BUT I HAV…

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HAD AN ISSUE WITH THE ABS MODULE GOING BAD. I HAD NO WARNING LIGHT, NO PREVIOUS PROBLEMS WITH THE BRAKE SYSTEM AT ALL. WHEN GETTING OFF THE INTERSTATE AT 70 MPH COMING UP TO A STOP SIGN THERE WAS NO FRONT BRAKE AT ALL. THE LEVER WAS HARD AS A ROCK AND WOULD NOT PULL AT ALL. HARLEY SAYS IT'S FROM NOT FLUSHING THE FLUID, BUT I HAVE FLUSHED IT 3 TIMES SINCE PURCHASE AND I PURCHASED IT BRAND NEW. THE BIKE HAS 47K MILES ON IT AND HAS ALWAYS BEEN SERVICED BY ME. I'M AN ASE CERTIFIED MASTER MECHANIC WITH 21 YRS EXPERIENCE ON AUTOMOBILES. I HAVE NEVER HEARD OF AN ABS FAULT CAUSE A NO BRAKE SITUATION. THIS IS A DEATH WAITING TO HAPPEN.

NHTSA ODI #10939934

Official recalls

2

18V076000 · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip; Service Brakes, Hydraulic:fluid

Jan 29, 2018

Harley-Davidson Motor Company (Harley-Davidson) is recalling all 2008-2011 Touring, CVO Touring and VSRC motorcycles equipped with anti-lock brakes (ABS), including Road King (FLHR), Road King Police (EFI) (FLHP), Road King Police (EFI) (FLHPE), Electra Glide Standard Police (EFI) (FLHTP), Electra Glide Classic (EFI) (FLHTC), Electra Glide Ultra Classic (EFI) (FLHTCU) and Street Glide (EFI) (FLHX), 2008 VROD (VRSCAWA), CVO Road King 4 (FLHRSE4), Night Rod (VRSCDA), CVO Ultra Classic 3 (FLHTCUSE3), Night Rod Special (VRSCDXA), 2008-2010 Road King Classic (EFI) (FLHRC), 2008-2009 Road Glide (EFI) (FLTR) and Electra Glide Standard (EFI) (FLHT), 2009-2010 V-Rod (VRSCAW), 2009 CVO Ultra Classic (FLHTCUSE4) and CVO Road Glide 3 (FLTRSE3), 2009-2011 Night Rod Special (VRSCDX) and V-Rod Muscle (VRSCF), 2010 CVO Ultra Classic 5 (FLHTCUSE5) and CVO Street Glide (FLHXSE), 2010-2011 Electra Glide Ultra Limited (FLHTK) and Road Glide Custom (FLTRX), 2011 Road Glide Ultra 103 (FLTRU103), Street Glide 103 (FLHX103), Road King Classic 103 (FLHRC103), CVO Ultra Classic 6 (FLHTCUSE6), CVO Road Glide Ultra (FLTRUSE), Road Glide Custom 103 (FLTRX103), and CVO Street Glide 2 (FLHXSE2) motorcycles. Deposits may form on components within the brake system if the DOT 4 brake fluid is not replaced for a prolonged period of time beyond the 2-year maintenance schedule specified in the Owner’s Manual.

Consequence & remedy

Consequence: These deposits may cause a valve within the ABS Hydraulic Control Unit to stick, reducing braking ability and increasing the risk of a crash.

Remedy: Harley-Davidson will notify owners, and dealers will flush the entire brake system with new Platinum Label DOT 4 brake fluid, free of charge. The recall began on February 14, 2018. Owners may contact Harley-Davidson customer service at 1-800-258-2464. Harley-Davidson's number for this recall is 0171.

Additional source detail variants (2)

Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip

Harley-Davidson Motor Company (Harley-Davidson) is recalling all 2008-2011 Touring, CVO Touring and VSRC motorcycles equipped with anti-lock brakes (ABS), including Road King (FLHR), Road King Police (EFI) (FLHP), Road King Police (EFI) (FLHPE), Electra Glide Standard Police (EFI) (FLHTP), Electra Glide Classic (EFI) (FLHTC), Electra Glide Ultra Classic (EFI) (FLHTCU) and Street Glide (EFI) (FLHX), 2008 VROD (VRSCAWA), CVO Road King 4 (FLHRSE4), Night Rod (VRSCDA), CVO Ultra Classic 3 (FLHTCUSE3), Night Rod Special (VRSCDXA), 2008-2010 Road King Classic (EFI) (FLHRC), 2008-2009 Road Glide (EFI) (FLTR) and Electra Glide Standard (EFI) (FLHT), 2009-2010 V-Rod (VRSCAW), 2009 CVO Ultra Classic (FLHTCUSE4) and CVO Road Glide 3 (FLTRSE3), 2009-2011 Night Rod Special (VRSCDX) and V-Rod Muscle (VRSCF), 2010 CVO Ultra Classic 5 (FLHTCUSE5) and CVO Street Glide (FLHXSE), 2010-2011 Electra Glide Ultra Limited (FLHTK) and Road Glide Custom (FLTRX), 2011 Road Glide Ultra 103 (FLTRU103), Street Glide 103 (FLHX103), Road King Classic 103 (FLHRC103), CVO Ultra Classic 6 (FLHTCUSE6), CVO Road Glide Ultra (FLTRUSE), Road Glide Custom 103 (FLTRX103), and CVO Street Glide 2 (FLHXSE2) motorcycles. Deposits may form on components within the brake system if the DOT 4 brake fluid is not replaced for a prolonged period of time beyond the 2-year maintenance schedule specified in the Owner’s Manual.

Consequence: These deposits may cause a valve within the ABS Hydraulic Control Unit to stick, reducing braking ability and increasing the risk of a crash.

Remedy: Harley-Davidson will notify owners, and dealers will flush the entire brake system with new Platinum Label DOT 4 brake fluid, free of charge. The recall began on February 14, 2018. Owners may contact Harley-Davidson customer service at 1-800-258-2464. Harley-Davidson's number for this recall is 0171.

Service Brakes, Hydraulic:fluid

Harley-Davidson Motor Company (Harley-Davidson) is recalling all 2008-2011 Touring, CVO Touring and VSRC motorcycles equipped with anti-lock brakes (ABS), including Road King (FLHR), Road King Police (EFI) (FLHP), Road King Police (EFI) (FLHPE), Electra Glide Standard Police (EFI) (FLHTP), Electra Glide Classic (EFI) (FLHTC), Electra Glide Ultra Classic (EFI) (FLHTCU) and Street Glide (EFI) (FLHX), 2008 VROD (VRSCAWA), CVO Road King 4 (FLHRSE4), Night Rod (VRSCDA), CVO Ultra Classic 3 (FLHTCUSE3), Night Rod Special (VRSCDXA), 2008-2010 Road King Classic (EFI) (FLHRC), 2008-2009 Road Glide (EFI) (FLTR) and Electra Glide Standard (EFI) (FLHT), 2009-2010 V-Rod (VRSCAW), 2009 CVO Ultra Classic (FLHTCUSE4) and CVO Road Glide 3 (FLTRSE3), 2009-2011 Night Rod Special (VRSCDX) and V-Rod Muscle (VRSCF), 2010 CVO Ultra Classic 5 (FLHTCUSE5) and CVO Street Glide (FLHXSE), 2010-2011 Electra Glide Ultra Limited (FLHTK) and Road Glide Custom (FLTRX), 2011 Road Glide Ultra 103 (FLTRU103), Street Glide 103 (FLHX103), Road King Classic 103 (FLHRC103), CVO Ultra Classic 6 (FLHTCUSE6), CVO Road Glide Ultra (FLTRUSE), Road Glide Custom 103 (FLTRX103), and CVO Street Glide 2 (FLHXSE2) motorcycles. Deposits may form on components within the brake system if the DOT 4 brake fluid is not replaced for a prolonged period of time beyond the 2-year maintenance schedule specified in the Owner’s Manual.

Consequence: These deposits may cause a valve within the ABS Hydraulic Control Unit to stick, reducing braking ability and increasing the risk of a crash.

Remedy: Harley-Davidson will notify owners, and dealers will flush the entire brake system with new Platinum Label DOT 4 brake fluid, free of charge. The recall began on February 14, 2018. Owners may contact Harley-Davidson customer service at 1-800-258-2464. Harley-Davidson's number for this recall is 0171.

11V506000 · Exterior Lighting:brake Lights:switch

Oct 19, 2011

HARLEY-DAVIDSON IS RECALLING CERTAIN MODEL YEAR 2009-2012 TOURING, CVO TOURING AND TRIKE VEHICLES MANUFACTURED FROM JUNE 6, 2008, THROUGH SEPTEMBER 16, 2011. SEE THE ABOVE LIST FOR THE MODELS INCLUDED IN THE RECALL. THE REAR BRAKE LIGHT SWITCH MAY BE EXPOSED TO EXCESSIVE HEAT FROM THE EXHAUST SYSTEM.

Consequence & remedy

Consequence: THE EXCESSIVE HEAT MAY CAUSE THE SWITCH TO NOT ACTIVATE THE BRAKE LAMP OR ACTIVATE THE BRAKE LAMP WHEN NO BRAKE IS APPLIED AND/OR CAUSE A BRAKE FLUID LEAK AT THE BRAKE LIGHT SWITCH, AFFECTING REAR BRAKE PERFORMANCE. EITHER CONDITION MAY INCREASE THE RISK OF A CRASH.

Remedy: HARLEY-DAVIDSON WILL NOTIFY OWNERS, AND DEALERS WILL A INSTALL A REAR BRAKE LIGHT SWITCH KIT, FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING OCTOBER 31, 2011. OWNERS MAY CONTACT HARLEY-DAVIDSON AT 1-414-343-4056.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

PE16009 · Sudden Brake Failure - Motorcycle

Opened Jul 6, 2016 · Closed Apr 23, 2018

Status: closed (inferred from source dates) · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module

The Office of Defects Investigation (ODI) opened this investigation in July 2016 based on forty-three (43) Vehicle Owner Questionnaires (VOQ).During the course of this investigation ODI received a total of 145 VOQs related to the alleged defect on the subject motorcycles.Owners allege they experience a sudden and complete loss of brakes on one or both wheels.To better understand the cause of the braking issue on the subject motorcycles, ODI requested NHTSA's Vehicle Research and Test Center (VRTC) conduct inspections and testing of affected vehicle braking systems.Through its work, VRTC determined that deposits were forming on the valves in the Hydraulic Control Unit (HCU) of the Antilock Braking System (ABS). These deposits could prevent the proper function of the HCU and render the brakes ineffective.To understand why deposits were forming in the HCU, Harley Davidson completed an analysis of the Dow 460 brake fluid used as original equipment on the subject motorcycles and determined that it had stability issues if left in the brake system for an extended period of time.Harley Davidson found that if a brake fluid flush was not conducted as outlined in the owner?s manual for the motorcycles, and was left in the system for a period of time beyond their recommendation; deposits could form in the HCU.Through further testing, Harley Davidson identified an alternate, commercially available, brake fluid that did not have the same stability issues as the original fluid and could stop the proliferation of any current brake system deposits.ODI sent Information Request (IR) letters to Harley Davidson and Dow Chemical (the supplier of the brake fluid on the subject motorcycles) to collect information about the subject bikes and the alleged defect.Harley Davidson responded in full on Sept 30, 2016 and Dow responded with a confidential submission on October 25, 2017.ODI analyzed the information contained in both IR responses and concluded that motorcycles manufactured during Model Years (MY) 2008, 2009, 2010, and 2011 were failing at a rate greater than their peers.Based on this analysis and the brake fluid study conducted by Harley Davidson, a group of motorcycles was identified that were potentially affected by the instability of the original brake fluid.2008 marked the introduction of ABS on Harley Davidson motorcycles and a change in the Dow 460 brake fluid used in the 2012 MY vehicles provided the bases for the scope of the affected population.With recall action 18V-076 taken by Harley Davidson this investigation is closed as further use of agency resources does not appear to be warranted.The ODI reports cited above can be reviewed at: https://www.nhtsa.gov/ using the complaint identification numbers attached to this resume.