Akrapovic Slip-On Exhaust Aprilia Rsv4 RR / RF Features: Joint of the inlet cap is milled on a state-of-the-art CNC machine No fuel remapping required, but for optimal performance J&P Cycles recommends use of a fuel controller A combination of beautiful machine and hand welds 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