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Service bulletin Customer Letter

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 id10143244
Published by NHTSA2018-07-30
Manufacturer's numberCustomer Letter
Manufacturer's date2018-07-17
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Customer letter - Honda has determined that a defect related to emissions regulations exists in all model 2017, and certain model year 2018 Honda CMX300/A and CMX500/A - Rebel motorcycles. The fuel vapor permeation of the EVAP canister charge hose exceeds the federal permeation standards. An updated part, made of a different material, is available to correct this condition.

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

Engine

Vehicles listed
HONDA CMX3002017 to 2018
HONDA CMX5002017 to 2018

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