11-piece timing chain complete kit for all 2.5L TFSI engines as installed in the Audi RS3 and TTRS. It can happen that timing chains stretch over time, this can cause the timing to adjust, the chains rattle and the engine can no longer work properly. A defective chain can lead to engine damage. In the worst case it comes to a capital engine damage by valve-piston collision! In our complete kit all components for the chain drive are included: 2 timing chains 4 slide rails 1 gasket 2 chain tensioners 2 screws for the camshafts Features: Installation by plug & play Less wear and friction Protect your engine (Engine Safe) Change interval 100tKm or every 7 years at the latest 100% Made in Germany quality! Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com