No, not JUST mufflers. It’s a Quiet Kore full system. The pipe is included in Brock’s 2012 ZX-14R Drag Racing Package ( $1, 795) , which included clutch springs and spacers, adjustable shock links to quickly ( 10 minutes! ) change rear ride height, a bolt-on strap to collapse the front end, an adjustable-length sidestand, plus a Dynojet Power Commander V and Guhl ECU reflash.
All of that increases performance at the drag strip except for the sidestand.