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Service bulletin KTB2604

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 id11031352
Published by NHTSA2026-04-15
Manufacturer's numberKTB2604
Manufacturer's date2026-03-05
NHTSA componentENGINE

NHTSA's summary

During routine quality checks, it was discovered that the rotor screws #0912060206 AH SCREW DIN 912 M6X20 on the above-mentioned vehicles were not correctly tightened in isolated cases. To prevent a possible malfunction, KTM North America, Inc. is instructing that the screw connection be revised.

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
KTM 1390 SUPER DUKE R EVO2026

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