Service bulletins for the 2021 Kawasaki Ninja 400
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
2 on file from NHTSA, as of 2026-10-19.
By type
By component
| MC24-01 | 2024-02-07. Service bulletin. STRUCTURE. Service Information about a shipping bracket attaching the motorcycle to the crate can cause damage to the motorcycle fuel tank if removed. |
|---|---|
| MC20-05 | 2021-01-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Some newly-released 2021 Kawasaki models require “service activation” before delivery to the customer. The main purpose of this is to record the "service activation" date of the vehicle. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.