Home » ENGINE » EXHAUST   CPI Big Bore Inframe Exhaust Chrome Details  CPI Big Bore exhaust is the best all around pipe on the market. This pipe to have a big midrange hit and pull, with incredible top end! These pipes work extremely well with ported motors. The mufflers are custom built with a CNC Billet aluminum end cap so that it won't blow out or fall apart! NOTE: This version is for 440cc and above. Chrome plated. Part# 02-5740 List Price: $640.00 Price: $640.00 CPI in frame Pipes with Silencers Chrome Details  CPI exhaust pipes are the best all around pipe on the market. This pipe to have a big midrange hit and pull, with incredible top end! These pipes work extremely well with ported motors. The mufflers are custom built with a CNC Billet aluminum end cap so that it won't blow out or fall apart! NOTE: The 350 pipes will work on motors from 350's up to about a 430cc. For 440cc motors and above we do offer a big bore version of the inframe pipe. Part# 02-5707 List Price: $620.00 Price: $620.00   Schere Big Bore in Frame Exhaust Pipes Show Chrome Details  Schere Big Bore in-frame exhaust pipes with silencers. Now with SHOW CHROME finish. These pipes have a 10,400 power peak and produce major top-end power. Part# 02-5758 List Price: $695.00 Price: $620.00   Schere in Frame Exhaust Pipes Show Chrome Details  Schere in-frame exhaust pipes with silencers. Now with SHOW CHROME finish. These pipes have a 10,400 power peak and produce major top-end power. Part# 02-5755 List Price: $695.00 Price: $620.00