Manufacturer recall number

Honda recall KT5, KU3

Q: Is KT5, KU3 the same recall as 25V891000?

Yes. KT5, KU3 is Honda’s own number for it; 25V891000 is NHTSA’s. One recall, two references.

Honda calls it KT5, KU3. NHTSA filed it as campaign 25V891000 on Dec 18, 2025: engine and engine cooling on the 2024–2026 Honda CBR600RR, 1,337 vehicles potentially affected. One recall, two numbers — the dealer quotes the manufacturer’s, the federal record carries NHTSA’s.

The full filing, 25V891000 →Check a VIN at NHTSA Honda’s own VIN lookup →

What NHTSA has under this number

Source: 49 CFR Part 573 filings

NHTSA campaign	Vehicles	Component	Filed	Affected	Severity
25V891000	2024–2026 Honda CBR600RR	Engine And Engine Cooling	Dec 18, 2025	1,337	critical

Problem Honda (American Honda Motor Co.) is recalling certain 2024-2026 CBR600RR motorcycles. The cylinder head may have been improperly manufactured, which can lead to rod bearing failure, possibly resulting in rear wheel lock up or oil leaking onto the rear tire. Risk Rear wheel lockup increases the risk of a crash or injury. Engine oil that leaks onto hot exhaust components increases the risk of a fire. Fix Dealers will replace the engine assembly, free of charge. Interim letters notifying owners of the safety risk were mailed February 9, 2026. A second letter will be sent once the remedy is available, anticipated October 31, 2026. Owners may contact Honda's customer service at 1-866-784-1870. Honda's numbers for this recall are KT5 and KU3. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning January 7, 2026.

The manufacturer’s own words as filed for 25V891000. Every model year it covers, the build window and the filed PDFs →

Two numbers, one recall

Every safety recall carries two identifiers. KT5, KU3 is the number Honda assigned in its own system: it is what appears on the owner letter, on the dealer’s service screen and on the repair order. 25V891000 is the number NHTSA filed the same recall under when the manufacturer reported it, and it is the one every federal record, this site included, is keyed on.

The repair is free by federal law for vehicles up to fifteen years old. Whether one particular vehicle is included is settled by its VIN against the manufacturer’s build list, not by its model year.

Check one specific vehicle

Both lookups check a VIN against the manufacturer’s own list and say whether the repair is still outstanding on that vehicle.

NHTSA VIN recall lookup →Honda’s own VIN lookup →

Common questions

Source: NHTSA, 49 CFR Part 573

Is KT5, KU3 the same recall as 25V891000?

Yes. KT5, KU3 is Honda’s own number for it; 25V891000 is NHTSA’s. One recall, two references.

Which vehicles does KT5, KU3 cover?

2024–2026 Honda CBR600RR, 1,337 vehicles by the manufacturer’s count. A recall covers a build range, so the VIN decides whether one particular vehicle is in it.

Does the KT5, KU3 repair cost anything?

No. The manufacturer must remedy a safety defect at no charge for vehicles up to 15 years old from first sale.