LeoVince slip-on systems are made of durable aluminum and 304 stainless steel and feature a real carbon-fiber end cap. One bolt lets you quickly change from the 98dB open configuration to the 94dB insert with spark arrestor for off-road riding or noise-critical tracks. Supermoto-specific systems with additional tire clearance are available for selected models. Slip-ons boost horsepower an average of 5% across RPM range Full systems boost horsepower an average of 10% across RPM range All 304 stainless steel internal silencer construction with aluminum canister Pipes made of TIG-welded 304 stainless steel Reliable sound check of 96dB insert in, 98dB insert out CAD/CAM designed for precise fit Machine-specific tuned to work with stock fuel settings All in the Box ? USFS Spark Arrestor, Sound Inserts, Spring Tool How this exhuaust was designed LeoVince products are designed in their own dedicated R&D facility using advanced CAD/CAM technology. Every prototype is run extensively on the dyno and once approved is tested on the track under the most severe conditions. In many cases LeoVince R&D works hand-in-hand with manufacturer factory race teams for further development.  How this exhuast was made LeoVince facilities are completely inclusive, including all aspects of production, stamping, welding, bending, and carbon fiber molding. To ensure legendary build quality, nothing is farmed out to subcontractors. LeoVince is dedicated to combining the most modern technology with the handcrafted finish delivered by experienced craftsmen; all to provide you with the best exhaust in the world.