Super Silencer: The larger silencer still allows your exhaust to flow freely but reduces the noise level of your machine. The super silencer is about 18 inches long and the standard silencer is about 12 inches long. POWER PROS Hi-Performance Exhaust Pipes for FL400 Pilots. POWER PROS The best pipe available at any price! FL400 Pilot Rev Pipe POWER PROS Custom built hi-performance exhaust pipe. These are TOP QUALITY hand formed Rev pipes. Premium pipe comes standard with Super Silencer, Billet Spark Arrestor, and Ceramic Coating. Spark Arrestor Upgrade - Billet Aluminum: This is a US Forestry approved spark arrestor. It is constructed from Billet Aluminum and is very nice. ![]() Ceramic Coat saves on paint and protects pipe. POWER PROS pipes are custom built to order and may take 2 to 12 weeks for delivery. Free Shipping Included!! | |||||||||