2019 Honda Cb300r problems, complaints & recalls
Most-reported problem areas: Power Train (2)
Safety recalls (2)
Exterior Lighting:headlights 2025-04-03 · campaign 25V210000 · 7,212 vehicles
Defect: Honda (American Honda Motor Co.) is recalling certain 2018-2025 CB300R motorcycles. The headlights may flicker or shut off while driving.
Risk: Loss of headlight illumination can reduce visibility, increasing the risk of a crash or injury.
Fix: Dealers will replace the headlight assembly, free of charge. Owner notification letters were mailed May 27, 2025. Owners may contact Honda's customer service at 866-784-1870. Honda's number for this recall is KS0.
Power Train:manual Transmission 2019-06-04 · campaign 19V412000 · 3,898 vehicles
Defect: Honda (American Honda Motor Co.) is recalling certain 2019 CB300R, 2018 CBR300R, 2018 CRF250L, 2018 CRF250L Rally, and 2018-2019 CMX300 motorcycles. The circlip, on the transmission's main shaft, may detach allowing for gear misalignment.
Risk: A misaligned gear can shift the transmission from neutral into gear during engine start, potentially resulting in unexpected motorcycle movement or seize the transmission and rear wheel while the motorcycle is in motion. Both conditions increase the risk of crash or injury.
Fix: Honda will notify owners, and dealers will replace the transmission main shaft, free of charge. The recall began July 8, 2019. Owners may contact Honda customer service at 1-866-784-1870. Honda's number for this recall is KK3.
Service bulletins (1)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Equipment Adaptive/Mobility 2021-02-19 · TheWrench2Feb.21 · Service Bulletin/Repair Instructions
the wrench - if the right engine cover is leaking coolant on any of the models listed, this could be due to the water pipe causing a gap at the clutch cover side. replacing the o-ring will not fix the leak. instead, replace the water pipe.
What owners report
2026-03-18 · Power Train“i am submitting a complaint regarding a 2019 honda cb300r with approximately 1,225 miles. this vehicle is subject to an open recall (nhtsa recall 19v-412) involving a transmission mainshaft circlip that can detach and cause gear misalignment and shifting issues. prior to service, the motorcycle exhibited a symptom where it would not shift or oper…”
2020-01-19 · Unknown Or Other · 1,600 mi“i was riding thru a turn on my 2019 honda cb300r and when i started to accelerate out of it in 2nd gear it popped out of second and down into neutral causing me to lose traction and fall onto my left side. luckily i walked away with only some road rash. i had the recall done, but something is still off in the transmission. a few days prior this had…”
2019-09-27 · Power Train“tl* the contact owns a 2019 honda cb300r motorcycle. the contact received notification of nhtsa campaign number: 19v412000 (power train). the contact called station park honda at 502-587-8496 (located at 830 s 9th st, louisville, ky 40203) and was informed that the parts were not available. the manufacturer was not made aware of the issue. the cont…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.