Nitrous Express Proton Plus Jet Pack (20421JP) 2561 7 LS6 (18U-01-0050-8)

7 LS6 (18U-01-0050-8)

A true dual catback from inlets to tips

Borla S-Type Cat-Back Exhaust System for 1999-2004 Ford Mustang GT 4

Compatibility: Subaru EJ207 with SINGLE AVCS

Nitrous Express Proton Plus Jet Pack (20421JP) 2561 7 LS6 (18U-01-0050-8)NX Jets are manufactured on CNC equipment, and are guaranteed to be within . 0005 of specified jet size. In recent testing, using the same jet size, NX jets out flowed the competition by 35%! That's right 35% more flow through the same orifice, how you ask The NX jet was designed to be more than just a hole in a piece of brass; its contoured inlet and multi stepped outlet allow turbulence free flow with no restrictions. Features: High quality at an