Akrapovic Racing Exhaust Systems Kawasaki Ninja 650 / Z650 The Akrapovic Racing Line has been designed specifically for demanding riders and represents an ideal balance between price and performance. The exhaust systems are dramatically lighter compared to stock exhaust systems and feature exceptional production quality and increased engine performance combined with pure racing sound output. Features: High quality stainless steel headers and mid-pipes No fuel remapping required For peak performance J&P Cycles recommends use of a fuel controller A combination of beautiful machine and hand welds Patented hexagonal muffler Lightweight, compact and high-temperature-resistant carbon fiber muffler clamp CNC machined muffler inlet cap Optimized to maximize lean angle All carbon fiber parts are produced in-house Air-tight quality controlled production means your exhaust will be perfect High-quality, silicon-shielded stainless steel exhaust springs