NHTSA vehicle safety data
2021 Honda CMX300 Recalls, Ratings & Complaints
The 2021 Honda CMX300 has 2 NHTSA recall campaigns and 0 owner complaints on file as of October 16, 2026. Recall repairs are usually free at an authorized Honda dealer.
NHTSA recall and complaint data for the 2021 Honda CMX300. Recall data is refreshed daily from NHTSA.
STEERING: STEERING WHEEL/HANDLE BAR
NHTSA #26V500000Reported July 30, 2026 · Honda (American Honda Motor Co.)
Potentially affected: 43,913 vehicles
Defect description
Honda (American Honda Motor Co.) is recalling certain 2017-2023, 2025 CMX500, 2017-2023, 2025-2026 CMX300, and 2025 Honda SCL500 motorcycles. The handlebar lock screw may loosen and detach.
Safety consequence
A detached screw may lodge between the frame and stem, interfering with steering and increasing the risk of a crash or injury.
Manufacturer remedy
Dealers will replace the lock screw and apply thread lock, free of charge. Owner letters were mailed September 29, 2026. Owners may contact Honda's customer service at 1-866-784-1870. Honda's number for this recall is KU8. This recall expands previous NHTSA recall number 26V146. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning August 4, 2026.
EXTERIOR LIGHTING
NHTSA #21V382000Reported May 24, 2021 · Honda (American Honda Motor Co.)
Potentially affected: 28,528 vehicles
Defect description
Honda (American Honda Motor Co.) is recalling certain 2020-2021 Super Cub C125, CB500X, CB650R, CBR300R, CBR500R, CBR650R, Rebel 300, Rebel 500, Monkey, 2020 CRF250L, GROM, 2021 CRF300L, and CB500F motorcycles. The rear reflector lens may not reflect brightly enough. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
Safety consequence
A dim rear reflector may reduce the visibility of the motorcycle to other drivers, increasing the risk of a crash or injury.
Manufacturer remedy
Dealers will replace the rear reflector, free of charge. Owner notification letters were mailed July 7, 2021. Owners may contact Honda customer service at 1-866-784-1870. Honda's number for this recall is KM3.
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.
Other Honda CMX300 model years
Check your 2021 Honda CMX300 VIN
Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Honda CMX300 at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.
Check a Honda VIN