Owners have filed 21 complaints
about the 2024 Kawasaki Ninja ZX-6R with NHTSA between 2025 and 2026.
The largest single group is the engine & cooling.
Across this model's run it ranks 1 of 3 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 54
Against the median year of the Kawasaki Ninja ZX-6R. 50 means typical for this
model; 100 means roughly double.
Severity — 100
28.6% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — not reported
Too few complaints recorded a mileage to measure this.
How 2024 compares with every other Kawasaki Ninja ZX-6R
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Jun 2025peak 9Mar 2026
Recalls on the 2024 Kawasaki Ninja ZX-6R
A complaint is one owner's allegation. A recall is the point at which
the manufacturer or a regulator agreed the defect is real and dangerous
enough to fix for free — however old the car is.
Canada — Transport Canada
Canada runs its own recall programme, and its campaigns do not
always mirror the American ones.
Recall 2025651735 units in Canada
Engine
Issue: On certain motorcycles, the recall repairs completed by a Kawasaki dealer during Transport Canada recall no. 2025-335 may not be effective. As a result, another repair is required. On certain motorcycles, the crankshaft bolts may have been over-tightened during production. As a result, a crankshaft bushing could become damaged. If this happens, the engine could stall while driving. Note: This recall replaces Transport Canada recall no. 2025-335. Vehicles that were repaired under that recall also require this repair. Safety Risk: A sudden loss of engine power could increase the risk of a crash. Corrective Actions: To reduce the safety risk, Kawasaki advises not to ride your motorcycle until the recall repairs are completed. Kawasaki will notify owners by mail and advise you to take your motorcycle to a dealership to inspect the crankshaft bolts and bearing. The dealer will tighten the crankshaft bolts correctly and repair or replace parts and/or the engine, as necessary.
Recall 2025335689 units in Canada
Engine
This recall was replaced by Transport Canada recall no. 2025-651. Issue: On certain motorcycles, the crankshaft bolts may have been over-tightened during production. As a result, a crankshaft bushing could become damaged. If this happens, the engine could stall while driving. Safety Risk: A sudden loss of engine power could increase the risk of a crash. Corrective Actions: To reduce the safety risk, Kawasaki advises not to ride your motorcycle until the recall repairs are completed. Kawasaki will notify owners by mail and advise you to take your motorcycle to a dealership to inspect the crankshaft bolts and bearing. The dealer will tighten the crankshaft bolts correctly and repair or replace parts and/or the engine, as necessary.
Reports where the owner recorded a crash, a fire, an injury or a death.
Litchfield Park, AZCrash1 killed
UNKNOWN OR OTHER
Unknown. Fatal motorcycle accident. Based on the police report, one witness said he blew a tire and all witnesses state that he and the bike went airborn. The motorcycle was part of the group of ZX6R's recalled by Kawasaki though its since been salvaged. The officer at the scene confirmed the bikes tire was intact so there's some suspicion that something else happened such as other parts coming off of the bike or the wheel smoking such as if it had locked up.
NHTSA complaint #11689033 — an unverified report by a vehicle owner.
Litchfield Park, AZCrash1 killed
ENGINE
Unknown. Fatal motorcycle accident. Based on the police report, one witness said he blew a tire and all witnesses state that he and the bike went airborn. The motorcycle was part of the group of ZX6R's recalled by Kawasaki though its since been salvaged. The officer at the scene confirmed the bikes tire was intact so there's some suspicion that something else happened such as other parts coming off of the bike or the wheel smoking such as if it had locked up.
NHTSA complaint #11689033 — an unverified report by a vehicle owner.
Litchfield Park, AZCrash1 killed
SERVICE BRAKES
Unknown. Fatal motorcycle accident. Based on the police report, one witness said he blew a tire and all witnesses state that he and the bike went airborn. The motorcycle was part of the group of ZX6R's recalled by Kawasaki though its since been salvaged. The officer at the scene confirmed the bikes tire was intact so there's some suspicion that something else happened such as other parts coming off of the bike or the wheel smoking such as if it had locked up.
NHTSA complaint #11689033 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Rochester, NY
ENGINE AND ENGINE COOLING
See attached document for complaint. The undersigned is legal counsel representing XXXXXXXXXXX in the above-mentioned matter. Please be advised that XXXXXXXXXX purchased a new Kawasaki 2024 motorcycle model ZX636JRFBN on May 9, 2024 with total purchase price of $13,981.92. On or about April of 2025, XXXXXXXXXXX received a recall notice with follow up notice in June of 2025 NHTSA Recall No. 25V376 “Crankshaft Bearing Seizure” causing the engine to potentially “lose engine power unexpectedly due to a seizure of the #5 crankshaft bearing” that may lead to an increased risk of a crash. Given the nature of the recall, the notice is marked with a “DO NOT RIDE” advisory until the repair is made and that the customer is to contact a dealer for such repair. Sometime on or about late August of 2025, the motorcycle was inspected at a Kawasaki dealership in an effort to address the recall. This was the earliest that the dealership could address the recall nearly three months after getting the “DO NOT RIDE” notice. The mechanic who examined the motorcycle indicated that it did not appear that the bike had the defect. In November of 2025, an additional recall notice “Crankshaft Bushing Seizure” was issued under Recall # 25V798 since the notice acknowledges that a prior repair on the vehicle may not have addressed the defect. A second letter was issued in November of 2025 under the same recall notice indicating the parts needed for the repair are not available. Finally, another notice was issued under the same recall, 25V798. Again a “DO NOT RIDE” warning is issued on this notice. The letter advises that the “method used to torque the crankcase bolts will be different than the one used in the prior recall “and that the recall applies to “vehicles already remedied under recall campaign MC25-08 (NHSTA Recall #25V376). Once again there are instructions to contact a dealer for repairs. It is presumed that parts are now available to attempt another repair. Due to the critical safety issue relating to the recalls, the unreasonabl
NHTSA complaint #11722245 — an unverified report by a vehicle owner.
Hedgesville, WV
UNKNOWN OR OTHER
I need help dealing with Kawasaki, how am I supposed to take my bike into the shop to get the recall checked when there is a do not ride recall and it’s winter where I live on 30 degree roads and the shop is 40 minutes away. Is Kawasaki suppose to pay for the transport of my bike to Purcellville.
NHTSA complaint #11709006 — an unverified report by a vehicle owner.
Herrin, IL
ENGINE AND ENGINE COOLING
The contact owns a 2024 Kawasaki Ninja ZX-6R. The contact received notifications of NHTSA Campaign Numbers: 25V376000 (ENGINE AND ENGINE COOLING) and 25V798000 (ENGINE AND ENGINE COOLING). The contact stated that while driving at an undisclosed speed, the motorcycle backfired. The local Oasis Outdoors - Powersports dealer was contacted and informed the contact that they did not repair Kawasaki motorcycles. The contact stated that the dealer was a Kawasaki dealer. The contact stated that the nearest Kawasaki dealer was 100 miles away. The motorcycle was not repaired. The manufacturer was not made aware of the issue. The failure mileage was unknown.
NHTSA complaint #11702943 — an unverified report by a vehicle owner.
Osceola Mills, PA
POWER TRAIN
Recall was issued for crankshaft bearing failure and recall was performed and completed. Kawasaki performed the inspection and repair, however kawasaki had failed to adequately fix the issue causing prolonged headaches and paying for something that is unsafe to opperate. All kawasaki is telling people is dont ride but not providing an adequate fix to make the bike safe again or theyre also refusing to buy the bikes back.
NHTSA complaint #11700482 — an unverified report by a vehicle owner.
Osceola Mills, PA
ENGINE
Recall was issued for crankshaft bearing failure and recall was performed and completed. Kawasaki performed the inspection and repair, however kawasaki had failed to adequately fix the issue causing prolonged headaches and paying for something that is unsafe to opperate. All kawasaki is telling people is dont ride but not providing an adequate fix to make the bike safe again or theyre also refusing to buy the bikes back.
NHTSA complaint #11700482 — an unverified report by a vehicle owner.
at 4,000 milesNorth Miami, FL
ENGINE AND ENGINE COOLING
The contact owns a 2024 Kawasaki Ninja ZX-6R Motorcycle. The contact stated that the motorcycle was making an abnormal sound. There was no warning light illuminated. The contact received a notification letter for NHTSA Campaign Number: 25V376000 (Engine and Engine Cooling). The vehicle was taken to the local dealer, where it was diagnosed that the failure was due to the bearing on the crankshaft. The vehicle was not repaired. The manufacturer was contacted and extended the warranty, but no additional assistance was provided. The failure mileage was approximately 4,000.
NHTSA complaint #11699340 — an unverified report by a vehicle owner.
Litchfield Park, AZCrash1 killed
UNKNOWN OR OTHER
Unknown. Fatal motorcycle accident. Based on the police report, one witness said he blew a tire and all witnesses state that he and the bike went airborn. The motorcycle was part of the group of ZX6R's recalled by Kawasaki though its since been salvaged. The officer at the scene confirmed the bikes tire was intact so there's some suspicion that something else happened such as other parts coming off of the bike or the wheel smoking such as if it had locked up.
NHTSA complaint #11689033 — an unverified report by a vehicle owner.
Litchfield Park, AZCrash1 killed
ENGINE
Unknown. Fatal motorcycle accident. Based on the police report, one witness said he blew a tire and all witnesses state that he and the bike went airborn. The motorcycle was part of the group of ZX6R's recalled by Kawasaki though its since been salvaged. The officer at the scene confirmed the bikes tire was intact so there's some suspicion that something else happened such as other parts coming off of the bike or the wheel smoking such as if it had locked up.
NHTSA complaint #11689033 — an unverified report by a vehicle owner.
Litchfield Park, AZCrash1 killed
SERVICE BRAKES
Unknown. Fatal motorcycle accident. Based on the police report, one witness said he blew a tire and all witnesses state that he and the bike went airborn. The motorcycle was part of the group of ZX6R's recalled by Kawasaki though its since been salvaged. The officer at the scene confirmed the bikes tire was intact so there's some suspicion that something else happened such as other parts coming off of the bike or the wheel smoking such as if it had locked up.
NHTSA complaint #11689033 — an unverified report by a vehicle owner.
at 10,000 milesLong Beach, CA
ENGINE AND ENGINE COOLING
The contact owns a 2024 Kawasaki ZX-6R. The contact received notification of NHTSA Campaign Number: 25V376000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was contacted, inspected the vehicle, and informed the contact that the bearing for the crankshaft was damaged. The dealer had taken the engine out but had not repaired the vehicle. The motorcycle had not been returned. The dealer kept the motorcycle for 11 days, even though the recall repair stated that the repair should take approximately 11 hours. The manufacturer was made aware of the issue and opened a case. The failure mileage was approximately 10,000. Parts distribution disconnect.
NHTSA complaint #11675679 — an unverified report by a vehicle owner.
Austin, TX
ENGINE
A recall has been issued and the motorcycle deemed unsafe to ride. My local dealership has been told to expect at minimum 3 weeks to receive the kit required to conduct the inspection. This issue has been so widespread that the wait time will be substantial. Even then, there will be a substantial loss of resale value as well as risk of further malfunctions after having a local mechanic disassemble and reassemble the engine.
NHTSA complaint #11670799 — an unverified report by a vehicle owner.
Newport Beach, CA
ENGINE AND ENGINE COOLING
The contact owns a 2024 Kawasaki ZX-6R. The contact received notification of NHTSA Campaign Number: 25V376000 (ENGINE AND ENGINE COOLING); however, the part to do the recall repair was not yet available. The local dealer was contacted and refused to accept the motorcycle. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
NHTSA complaint #11670523 — an unverified report by a vehicle owner.
Portville, NY
ENGINE AND ENGINE COOLING
The contact owns a 2024 Kawasaki Ninja ZX-6R. The contact received notification of NHTSA Campaign Number: 25V376000 ( ENGINE AND ENGINE COOLING); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
NHTSA complaint #11670224 — an unverified report by a vehicle owner.
Fernley, NV
ENGINE
I own a 2024 Kawasaki KRT ABS ZX6R. They want to do an inspection that will not be sufficient to ride my motorcycle safely. The absolute only way for Kawasaki to do that would be to open the engine up to where they could see the actual crank shaft. I feel we are all being jerked around with this. They won't be able to deem it safe simply by inspecting the outer bearing. My motorcycle doesn't even have 300 miles on it. I haven't been able to ride it for almost a month now. It sitting can cause further damage. I'm not sure if my State of Nevada will be one of the States that offer a refund. I am making payments on a motorcycle that I cannot ride. Which is unexceptable.
NHTSA complaint #11670134 — an unverified report by a vehicle owner.
Fremont, CA
ENGINE
Manufacturer issued a Do Not Ride recall (25V376) but failed to provide a safe alternative or compensation. This has created a transportation hardship. I also felt very worried that I had been riding this motorcycle which had this serious issue. There is no timeline from the manufacturer on when the problem will be fixed. I'm extremely disappointed with this situation on a one year old bike. -thanks [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11669613 — an unverified report by a vehicle owner.
Clarkston, MI
POWER TRAIN
Vehicle: 2024 Kawasaki Ninja ZX-6R Recall Number: 25V376 VIN: [XXX] Date Received “Do Not Ride” Notice: 6/20/2025 Subject: Recall 25V376 – No Remedy Provided / Loss of Use / Warranty Concerns Dear NHTSA, I am submitting this complaint regarding NHTSA Recall No. 25V376, which applies to my 2024 Kawasaki Ninja ZX-6R due to a potentially catastrophic crankshaft bushing failure. On 6/20/2025, I received a formal “Do Not Ride” notice from Kawasaki Motors Corp. advising me to stop using my motorcycle immediately due to the risk of engine seizure. Since that day, my motorcycle has been parked and unusable — and Kawasaki has not provided any timeline or available remedy for this recall. This means I am now without use of a brand-new motorcycle that I paid for in full, during the entire prime riding season in my home state of Michigan. Even worse, Kawasaki has indicated that the required repair will involve a 20+ hour engine teardown rather than a full replacement. This significantly affects the value, mechanical integrity, and future reliability of my vehicle. I am reporting this to NHTSA because: 1.Kawasaki has not yet provided a fix, nor a timeline, more than 3 weeks after the problem was known. 2.There is no loaner program, compensation, or customer support plan in place. 3.Owners are losing months of use, insurance payments are still required, and the bike cannot be sold or traded. 4.Dealers were issued stop-sale instructions around June 4, 2025, but many continued sales through that time. 5.I fear this recall will result in severe devaluation of affected vehicles, even after repair. I’m asking NHTSA to please hold Kawasaki accountable for timely remedies, appropriate compensation, and warranty protection for affected owners like myself. If manufacturers are allowed to sideline vehicles with indefinite no-ride directives and offer no restitution, that leaves consumers completely unprotected. Thank you for your time [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)
NHTSA complaint #11669504 — an unverified report by a vehicle owner.
West Des Moines, IA
ENGINE
I am submitting a formal safety complaint regarding my 2024 Kawasaki Ninja ZX‑6R. June 22, 2025, I received two official “Do Not Ride” letters from Kawasaki. These letters state that, due to a possible internal engine defect, the motorcycle is unsafe to operate. My authorized Kawasaki dealer has confirmed that my unit is affected by a manufacturing issue that can cause engine seizure without warning, leading to serious risk of crash, injury, or death. It’s also important to note that Kawasaki notified dealers of this issue on June 4, 2025—over two weeks ago. Despite this, I only received my first formal customer notice on June 22. In the meantime, I was unknowingly operating a potentially dangerous motorcycle. Kawasaki has not provided a fix, recall repair, or buyback option. The bike is currently parked and unusable, while I continue to incur insurance costs, loss of use, and storage burden. The issue appears to stem from an over-torqued crankshaft bolt or related internal engine component — a known problem on other 2024 ZX‑6R units already recalled. I am requesting that NHTSA investigate this case further and ensure all affected motorcycles — including those not yet officially listed by VIN — are promptly included in the recall campaign and made eligible for full safety repair, buyback or additional compensation.
NHTSA complaint #11669438 — an unverified report by a vehicle owner.
Watauga, TX
ENGINE
#5 Bearing is out of torque putting engine at risk of seizure. Bike is stored and liquids drained pending recall and repair.
NHTSA complaint #11669479 — an unverified report by a vehicle owner.
South Beloit, IL
ENGINE
I am submitting a formal safety complaint regarding my 2024 Kawasaki Ninja ZX‑6R. Today, June 20, 2025, I received three official “Do Not Ride” letters from Kawasaki. These letters state that, due to a possible internal engine defect, the motorcycle is unsafe to operate. My authorized Kawasaki dealer has confirmed that my unit is affected by a manufacturing issue that can cause engine seizure without warning, leading to serious risk of crash, injury, or death. It’s also important to note that Kawasaki notified dealers of this issue on June 4, 2025—over two weeks ago. Despite this, I only received my first formal customer notice today, June 20. In the meantime, I was unknowingly operating a potentially dangerous motorcycle. Kawasaki has not provided a fix, recall repair, or buyback option. The bike is currently parked and unusable, while I continue to incur insurance costs, loss of use, and storage burden. The issue appears to stem from an over-torqued crankshaft bolt or related internal engine component — a known problem on other 2024 ZX‑6R units already recalled. I am requesting that NHTSA investigate this case further and ensure all affected motorcycles — including those not yet officially listed by VIN — are promptly included in the recall campaign and made eligible for full safety repair, buyback or additional compensation.
NHTSA complaint #11668215 — an unverified report by a vehicle owner.
Milwaukie, OR
ENGINE
I purchased a brand new 2024 Kawasaki ZX-6R. At just 3,500 miles, the engine catastrophically failed while I was riding. The bike seized and shut off suddenly without warning. This was months before Kawasaki issued their official “do not ride” notice for this known issue. I received no prior warning and had no opportunity to prevent the failure. The dealership confirmed the failure and linked it to a known internal defect affecting this model, which has since triggered a recall. My bike has now been sitting at the dealership for over 7 months with no resolution, no ETA, and no support from Kawasaki. Despite this being a critical safety issue, Kawasaki has offered no compensation, replacement, or meaningful update. I’ve been forced to continue paying insurance on a bike that was brand new and is now completely unusable. Their “do not ride” letter arrived after the engine was already blown. This is a serious manufacturer defect with real safety consequences. The lack of accountability and customer support is unacceptable.
NHTSA complaint #11668253 — an unverified report by a vehicle owner.
Coventry, RI
ENGINE
As you are probably aware of this issue, there is a "do not ride" order in place for my 2024 Kawasaki ZX6R. The dealership confirmed that my VIN has been involved. I just got it, and I am paying for a motorcycle that cannot be used. The issues are below. This is unacceptable. safety recall report revealed certain vehicles may lose engine power during operation due to a seizure of the No. 5 metal crankshaft bushing leading to certain vehicles losing engine power and increasing the chance of a crash. "The bolts holding the crankshaft together in the crank case were over-torqued, and as a result the #5 metal crankshaft bushing can be damaged by improper oil clearance between the crankshaft and the bushing," a description of the issue read. Riders won't receive a warning before the potentially catastrophic issue arises, according to the document.
NHTSA complaint #11667196 — an unverified report by a vehicle owner.