Honda Cmx300 — Steering
High risk
Mar 12, 2026
Model years: 2024
On certain motorcycles, the handlebar lock screw may not have been installed properly. As a result, the screw could loosen and fall between the frame and the steering stem. If this
Also affects: Honda Cl500, Honda Cmx500
Honda Cmx300 — Engine
High risk
Apr 12, 2023
Model years: 2023
On certain motorcycles, the right-side engine crankcase cover could leak oil onto the exhaust pipe and/or the rear tire.
Also affects: Honda Cb300r
Honda Cmx300 — Lights And Instruments
High risk
May 25, 2021
Model years: 2020, 2021
Issue: On certain motorcycles, the rear reflex reflector lens could have a defect that could reduce the amount of light that is reflected. As a result, the reflector may not meet t
Also affects: Honda Cb500, Honda Cb550, Honda Cmx500, Honda Cbr650r, Honda Crf250l
Honda Cmx300 — Powertrain
High risk
May 31, 2019
Model years: 2019
On certain motorcycles, a clip in the transmission may detach. This could cause the transmission to shift from neutral into gear during engine start-up, or cause the rear wheel to
Also affects: Honda Cb300r