NHTSA vehicle safety data

2021 Kawasaki Ninja 400 Recalls & Complaints

The 2021 Kawasaki Ninja 400 has 1 NHTSA recall campaign and 1 owner complaint on file as of November 3, 2026. Recall repairs are usually free at an authorized Kawasaki dealer.

NHTSA recall and complaint data for the 2021 Kawasaki Ninja 400. Recall data is refreshed daily from NHTSA.

2021 Kawasaki Ninja 400 owner complaints

Owners have filed 1 complaint with NHTSA about the 2021 Kawasaki Ninja 400, describing incidents dated November 6, 2024.

Most-cited components

Power Train 1 complaint

The complaint on file reports a crash (owner-reported, not verified by NHTSA).

Newest complaints

ODI #11627639 · Filed November 27, 2024
This issue has been documented on hundreds of KAWASAKI NINJA400 Motorcycles ranging from 2019 to 2023. The clutch will malfunction and slip with miles as low as 200. I personally have a ninja 400 from the dealership with 7000 miles on it and the clutch is indeed slipping abnormally and this has…

Read the full complaint

Camshaft Chain Tensioner Improperly Heat-Treated

NHTSA #20V774000 · Engine and Engine Cooling — Engine — Hard Parts Internal/Mechanical · NHTSA notice

Reported December 11, 2020 · Kawasaki Motors Corp., U.S.A.

Potentially affected: 1,770 vehicles

Repair completion: 91.92% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Kawasaki campaign MC20-13 · Owners notified December 21, 2020

DO NOT DRIVE — this recall carries a "do not drive" advisory. Contact a Kawasaki dealer immediately.

Defect description

Kawasaki Motors Corp., U.S.A. (KMC) is recalling certain 2021 Z400 ABS (ER400D), Ninja 400 (EX400H) and Ninja 400 ABS (EX400G) motorcycles. The strength of the camshaft chain tensioner may be insufficient due to improper heat treatment, possibly causing it to be damaged.

Safety consequence

A damaged camshaft chain tensioner can cause the engine to stall, increasing the risk of a crash.

Manufacturer remedy

KMC will notify owners, and dealers will replace the camshaft chain tensioner, free of charge. Note: Owners are advised to not ride their motorcycles until the repair has been completed. The recall began December 21, 2020. Owners may contact KMC customer service at 1-866-802-9381. KMC's number for this recall is MC20-13.

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.

try.vin has no NCAP crash-test rating on file for the 2021 Kawasaki Ninja 400. NHTSA rates some vehicles by body style — pickups by cab, vans by roof height — so check nhtsa.gov/ratings.

1 owner complaint has been filed with NHTSA for the 2021 Kawasaki Ninja 400.

Power Train

ODI #11627639

Crash

Incident: November 6, 2024 · Filed: November 27, 2024

This issue has been documented on hundreds of KAWASAKI NINJA400 Motorcycles ranging from 2019 to 2023. The clutch will malfunction and slip with miles as low as 200. I personally have a ninja 400 from the dealership with 7000 miles on it and the clutch is indeed slipping abnormally and this has almost caused me in many times to loose control as it creates a very unpredictable situation. for many drivers. This needs to be recalled as kawasaki is avoiding this due to the “costs”. This is unacceptable please do your investigation into this further as to see how notorious this problem actually is and how unsafe of a situation it creates to to the general public.

Check your 2021 Kawasaki Ninja 400 VIN

Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Kawasaki Ninja 400 at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.

Check a Kawasaki VIN