2025 Triumph Daytona 660 problems

Filed Sep 25, 2026 · Engine · OR

The engine experienced catastrophic failure while riding the motorcycle at highway speeds - loss of power, a clicking noise, and then the engine died completely. Rider had to pull to the side of the freeway and coast to a safe location, engine would not restart. Motorcycle was then towed to the dealership who has evaluated the motorcycle and damage and opened a goodwill claim with Triumph corporate as the vehicle warranty expired at 20,000 miles (just prior to this incident occurring). The owner received the first and only recall notice for the low oil/short dipstick issue for this motorcycle on June 17th, 2026 via email - this was received five (5) days after the motorcycle was towed to the dealership on June 12th, 2026, and approximately 2.5 weeks following the engine's catastrophic failure. Warning lights showed up when the engine failed, but not prior. The manufacturer is refusing to replace/repair the engine due to the warranty being expired, even though the issue is due to the recall. I have only serviced this motorcycle with the dealership from which it was purchased (an authorized servicer of my motorcycle brand) and have maintained all records relating to services thus far (pre-sale inspection, 600 mile break-in service record, and 10k service record). The motorcycle was already on the schedule to be serviced for the 20k service interval. (10k service intervals for the Daytona 660, per the manufacturers recommendations). I also have written correspondence with the dealership regarding this issue and their communication with Triumph corporate.

Filed Apr 27, 2026 · Engine · FL

The contact owns a 2025 Triumph Daytona 660. The contact received notification of the federal safety agency Campaign Number: 25V531000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted, but the vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

Filed Sep 16, 2025 · Engine · 4,163 miles · TX

The contact owns a 2025 Triumph Daytona 660. The contact stated that while driving 70 MPH, the vehicle experienced a loss of automotive power. There was no warning light illuminated. The contact pulled over, and the vehicle was towed to a local dealer where it was diagnosed, and the contact was informed that the failure could not be duplicated. The vehicle was not repaired. The contact referenced the federal safety agency Campaign Number: 25V531000 (ENGINE AND ENGINE COOLING); as a possible cause for the failure. The manufacturer was not notified of the failure. The approximate failure mileage was 4,163.