Akrapovic Evolution Titanium Exhaust System (AF1-851443-851445)

Akrapovic Evolution Titanium Exhaust System for '06-'11 SXV 4.5 / 5.5. Will also fit '06-'11 RXV 4.5 / 5.5. This kit features a titanium can, titanium headers, and titanium link pipes. The Akrapovic Evolution exhaust with hexagonal muffler is the top system for Aprilia's SXV 4.5 / 5.5 model. This full system is designed for riders who know how to get the most out of their Aprilia. The advantages can be clearly seen from dyno measurements and felt on the racetrack. The muffler comes equipped with an approved spark arrester and a removable noise baffle. PERFORMANCE: Measurements of the Akrapovic EVOLUTION/RACING system on the APRILIA SXV 450/550 (without muffler insert): Power & Torque: These systems allow the motor to breathe fully throughout the rpm range. The most noticeable improvements are the bike's stronger and quicker response from low revs right up to the top end and the overrev range, where the power increase is even more apparent. The torque increase is similar, only more substantial, so the bike gains torque throughout the entire range, especially in the low end and the mid range. CONFIGURATION: The Akrapovic Evolution system is equipped with the unique Hexagonal offroad design muffler. The Evolution uses titanium. The conical header tube is or titanium as well. It is attached to the conical titanium link pipe with a sleeve joint secured with a silicon-shielded spring. The link pipe is attached to the muffler in the same manner. The inlet cap is titanium, while the outlet cap is carbon fiber. The muffler outer sleeve is made of titanium. The system is attached to the bike using Akrapovic carbon-fiber clamps. The system includes an approved spark arrester, which is indicated with a laser engraving on the muffler. Below is an '06 SXV 4.5 dyno graph showing the Horsepower (Red solid is with Akrapovic and AF1 Racing air filter, Blue solid is stock air filter and exhaust).