# Service bulletin TSB\-26121

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: 11030549
- Published by NHTSA: 2026\-04\-02
- Manufacturer's number: TSB\-26121
- Manufacturer's date: 2026\-03\-20
- NHTSA component: SERVICE BRAKES

## NHTSA's summary

Parking Brake Improvement

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030549-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030549-9999.pdf)

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

## Components

Brakes

## Vehicles listed

- 2019 to 2021 KOENIGSEGG REGERA

## Other bulletins for the same vehicles and component

- [TSB\-25282\-01](/bulletins/11022249.md), 2025-09-01, Service bulletin: SERVICE BRAKES. Parking Brake Bracket Bolts update: The bolts for the parking brake bracket may not have sufficient thread locking which may cause noise and/or premature wear on the brake disc.

JSON: [/v1/bulletins/11030549](/v1/bulletins/11030549)

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