Spark Exhaust Technology Aprilia RS 660 Titanium Exhaust. Constructed with a titanium silencer fitted with carbon ending, titanium mid-pipe and titanium racing header. Incredible weight saving (weighs only 3.6 kg vs stock at 6.5kg). Sound is aggressive but not extreme so that it is perfect both for track and road. Designed for Maximum Performance, Looks, Weight Savings and a Rich Deep Italian Sound (99 db). Handcrafted in Italy, Dyno Tested for maximum horsepower increase over stock. Non-Homologated Racing Version for Maximum Performance. For perfect performance, throttle response and durability, ECU remapping is recommended. Includes Carbon Heat Shield. *Mounts to Passenger Footpeg. *Does not include Race Hangar to Subframe Mount or removable DB Killer (Sold Separately).