The OE manufacturers have to find creative ways to meet the ever-changing emissions standards that, much like gas prices, are getting tougher to stomach. Over the years we've seen numerous designs: long, short, under the seat, under the bike, dual sided, single-sided, and constructed from just about every material in the search to produce the most power while keeping the weight to a minimum and the emissions in check. As a result of all the research and development, the stock header pipes on many sportbikes have become very efficient, and adding a slip-on exhaust system has become a simple way to add mild power while shedding loads of weight and improving the appearance. Slip-on systems are also available in a wide variety of colors, shapes, materials and designs to meet just about anyone's taste.
Our test bikes included horsepower's heavy hitters-a 2007 Suzuki GSX-R1000, 2007 Kawasaki ZX-14 and a 2008 Suzuki Hayabusa.
All of the systems were installed in less than 45 minutes using basic hand tools, and run on a Super Flow Cycle Dyno calibrated to Dynojet specs.