1. Adaptive Automotive BV
2. Advanced Group srl
3. Akrapovi? d.d.
4. BBM Akustik Technologie GmbH
5. Benteler International AG
6. Birchills Automotive
7. Borla Performance Industries Inc.
8. Bosal Group
9. Boysen GmbH & Co. KG
10. Capristo Exhaust
11. Continental AG
12. Ebersp?cher Group
13. Eisenmann Exhaust Systems by S&R Eisenmann GmbH
14. EOS Exhaust
15. Faurecia
16. Fennosteel Oy
17. Futaba Industrial Co. Ltd.
18. Hirotec Corporation
19. Klarius Products Ltd.
20. Magna International Inc.
21. Magnaflow by Car Sound Exhaust System Inc.
22. REMUS Innovation GmbH
23. Sango Co. Ltd.
24. Sejong Industrial Co. Ltd.
25. Tanabe USA Inc.
26. Tenneco Inc.
27. Walker Exhaust Systems Inc.
28. Witzenmann GmbH
29. Yutaka Giken Co. Ltd.