2019 Honda CB300R, 2018 Honda CBR300R, 2018–2019 Honda CMX300 and 1 other model Recall: Circlip, on the transmission's main shaft, may detach allowing for gear…
NHTSA campaign 19V412000 · Power Train · filed Jun 4, 2019 · verified Jul 30, 2026
The 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.
The 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.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
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.
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.safercar.gov.
Affected vehicles
Related recalls
More Honda CB300R recalls
Other campaigns involving Honda vehicles
Source: NHTSA recall database, campaign 19V412000 (manufacturer number KK3). Data last verified Jul 30, 2026.