This 2.75" diameter X-Pipe With Mid-Pipes is for use with Borla(r) Axle-Back systems ONLY. When combined with an Axle-Back system it creates a Cat-Back(tm)...
This 2.5" diameter performance Merge X-Pipe with Mid-Pipes creates power while adding a great sound. They will fit vehicles with and WITHOUT NPP. Borla(r)...
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This 2.5" diameter optional mid section is designed to work ONLY with BORLA® Axle-Back systems 11981 & 11981BC. Installation REQUIRES cutting the mid section...