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Honda CB300R Recall 19V412: Transmission Circlip May Detach, Causing Unexpected Movement or Lockup

NHTSA campaign 19V412, reported June 4, 2019, 3,898 vehicles potentially affected.

What this recall means for you

A circlip on the transmission's main shaft may detach, allowing a gear to become misaligned. A misaligned gear can shift the transmission out of neutral into gear when the engine starts, causing the motorcycle to move unexpectedly. It can also seize the transmission and rear wheel while riding.

Both conditions raise the risk of a crash and injury. If you own an affected motorcycle, do not ride it until the repair is done, and contact an authorized Honda dealer to have the transmission main shaft replaced. The repair is free of charge. Honda will also notify owners, and you can reach Honda customer service at 1-866-784-1870 (recall KK3). You can also check your VIN for any open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 19V412Honda (American Honda Motor Co.)
Component
POWER TRAIN:MANUAL TRANSMISSION
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.
Remedy
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.
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.safercar.gov.

Affected vehicles

Honda CB300R2019
Honda CBR300R2018
Honda CMX30020182019
Honda CRF250L2018