Akrapovic Yamaha MT-09/FZ-09 21-23 Racing Line Exhaust System (Titanium) - S-Y9R15-HAPT/1The Racing Line represents a full step in the exhaust system tuning process and offers a great balance between price and optimum performance. Racing performance exhaust systems are designed for riders that demand maximum performance from their motorcycle. The systems feature exceptional production quality and increased engine performance combined with pure racing sound output. An increment by 1. 5 Kw (2. 0 HP) and 1. 3 Nm was recorded on Akrapovics in