Manufacturer recall number

Honda recall KT6, KU4

Q: Is KT6, KU4 the same recall as 25V892000?

Yes. KT6, KU4 is Honda’s own number for it; 25V892000 is NHTSA’s. One recall, two references.

Honda calls it KT6, KU4. NHTSA filed it as campaign 25V892000 on Dec 18, 2025: engine and engine cooling on the 2025 Honda CB1000SP, 474 vehicles potentially affected. One recall, two numbers — the dealer quotes the manufacturer’s, the federal record carries NHTSA’s.

The full filing, 25V892000 →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
25V892000	2025 Honda CB1000SP	Engine And Engine Cooling	Dec 18, 2025	474	critical

Problem Honda (American Honda Motor Co.) is recalling certain 2025 CB1000SP motorcycles. The pistons and piston rings 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 inspect and repair the engine assembly as necessary, free of charge. Interim letters notifying owners of the safety risk were mailed February 9, 2026. Additional letters will be sent once the remedy is available, anticipated in August 2026. Owners may contact Honda's customer service at 1-866-784-1870. Honda's number for this recall is KT6. 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 25V892000. Every model year it covers, the build window and the filed PDFs →

Two numbers, one recall

Every safety recall carries two identifiers. KT6, KU4 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. 25V892000 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 KT6, KU4 the same recall as 25V892000?

Yes. KT6, KU4 is Honda’s own number for it; 25V892000 is NHTSA’s. One recall, two references.

Which vehicles does KT6, KU4 cover?

2025 Honda CB1000SP, 474 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 KT6, KU4 repair cost anything?

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