2018 Honda CMX300 problems & recalls
NHTSA recalls and owner complaints for the 2018 Honda CMX300.
Recalls
Power Train #19V412000 · 2019 · 3,898 units
Problem: 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.
Steering #26V500000 · 2026 · 43,913 units
Problem: 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.
Risk: A detached screw may lodge between the frame and stem, interfering with steering and increasing the risk of a crash or injury.
Fix: 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.
Recalls can cover only some VINs. Check yours at nhtsa.gov/recalls.
What owners complain about
No owner complaints filed with NHTSA for this model year.
Want the full repair deets? Get the service manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2018 CMX300.
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Specs
Specs coming soon. We only publish specs taken from the manufacturer's own spec sheets.
Other years
FAQ
Does the 2018 Honda CMX300 have recalls?
NHTSA lists 2 recalls for the 2018 Honda CMX300. Check your VIN at nhtsa.gov/recalls to see if a fix is still open.
What are the most common 2018 Honda CMX300 problems?
No owner complaints have been filed with NHTSA for this model year.