Vehicle recall 21V987000 · December 16, 2021
2021 Honda Rebel 1100
The radiator cap may have been improperly formed during manufacturing, which could create an insufficient seal.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Honda (American Honda Motor Co.) is recalling certain 2021 Honda Rebel 1100 (CMX1100) motorcycles. The radiator cap may have been improperly formed during manufacturing, which could create an insufficient seal.
- Consequence
- An insufficiently sealed radiator cap may leak or spray hot coolant, increasing the risk of injury or crash.
- Remedy
- Dealers will replace the radiator cap and refill any lost coolant, free of charge. Owner notification letters were mailed February 22, 2022. Owners may contact Honda service at 1-888-234-2138. Honda's number for this recall is KN1.
- Notes
- Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Recall details
- NHTSA campaign
- 21V987000
- Reported to NHTSA
- December 16, 2021
- Filed by
- Honda (American Honda Motor Co.)
- Manufacturer campaign
- KN1
- Owner notification
- February 22, 2022
- Vehicles potentially affected
- 1,022
- Initiated by
- the manufacturer
- Components
- Engine and engine cooling › Cooling system › Radiator assembly
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Honda Rebel 1100 (2021): 2021
Has your Honda been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. Recall repairs are free.