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Service bulletin ISA-21-01

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10209966
Published by NHTSA2022-04-06
Manufacturer's numberISA-21-01
Manufacturer's date2022-03-31
NHTSA componentSUSPENSION

NHTSA's summary

Indian Motorcycle found that some 2022 Chief models can exhibit a noise in the front of the motorcycle when operating slowly on rough or bumpy road conditions. The sound can be difficult to properly diagnose as it may resemble a metallic clicking in the front headlight area. The sound is coming from the bypass valve within the front suspension and occurs when switching between compression and rebound. The sound can be amplified by the fender shape on some motorcycles. The sound does not affect the performance of the motorcycle. Indian Motorcycle has released a service kit with new upper fork with a revised bypass valve to correct the noise.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Suspension

Vehicles listed
INDIAN CHIEF2022
INDIAN CHIEF BOBBER2022
INDIAN SUPER CHIEF2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.