Image available on the official notice.
Motorcycles (Honda CB1000F and 3 other models) - Repair
Official notice
19 Mar 2026
Last checked
27 Oct 2026
An official CAA Japan notice concerns Motorcycles (Honda CB1000F and 3 other models) - Repair. Engine (piston, top ring) defect. Defective components: Engine (piston, top ring). Condition of the structure, equipment, or performance considered noncompliant with standards, and its cause: Inappropriate piston and top-ring design leaves excessive clearance between the piston and top ring. Repeated deceleration by engine braking from high engine speeds may draw engine oil into the combustion chamber, where it burns, increasing oil consumption. Insufficient oil lubrication may then cause abnormal noise. Continued use may cause the engine to fail during riding, locking the rear wheel and causing a fall, or resulting in a fire. Published 2026-03-19.
What to do now
Recall notification number: 5789. Corrective measures: On all vehicles, replace the pistons and top rings with improved parts. Also inspect the engine and, if abnormal noise is present, replace the engine as a complete assembly.
Units affected
1,961
Recall number
5789
Official notice
2026-03-19
The hazard
The hazard
Engine (piston, top ring) defect. Defective components: Engine (piston, top ring). Condition of the structure, equipment, or performance considered noncompliant with standards, and its cause: Inappropriate piston and top-ring design leaves excessive clearance between the piston and top ring. Repeated deceleration by engine braking from high engine speeds may draw engine oil into the combustion chamber, where it burns, increasing oil consumption. Insufficient oil lubrication may then cause abnormal noise. Continued use may cause the engine to fail during riding, locking the rear wheel and causing a fall, or resulting in a fire.
How to check if you're affected
How to check if you're affected
Compare the product name and identifiers below with the item you own. Check the official notice for the affected products and next steps.
Models
Recall Numbers
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Affected products
Product 1
Units affected
Hazard
Where it was sold
Where it was sold
Retailer information is not currently available in RecallScope. Check the official notice for distribution details.
Location 1
Affected area 1
Company & contacts
Company & contacts
Brand: Honda. Contact: 本田技研工業株式会社. Phone 0120-370004.
Source & status
Source & status
Recall details
Recall details
Recall number
Event id
Units affected
Source tier
Documents, notices & source
See the official notice and source documents for full details.
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