# 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.

- Type: Service bulletin
- NHTSA id: 11031352
- Published by NHTSA: 2026\-04\-15
- Manufacturer's number: KTB2604
- Manufacturer's date: 2026\-03\-05
- NHTSA component: ENGINE

## 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11031352-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11031352-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2026 KTM 1390 SUPER DUKE R EVO

JSON: [/v1/bulletins/11031352](/v1/bulletins/11031352)

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