Available with 1-3/4" or 1-7/8" primaries and your choice of 3" x 3" or 3" x 2-1/2" Catted or non Catted X-pipe systems. Of course, these are manufactured using the highest quality 304 S/S available and require no modifications to install. All systems come standard with merge collectors with scavenger spikes. We also use the highest quality and best flowing metallic substrate catalytic converters available and all systems assemble with Grade 8 hardware and HDS/S band clamps.