New 4" Polished Double Wall Tips now Available! (3" Single Wall Standard)

This Spintech exhaust is the ultimate way to make your GTO sound great and outperform the competition! Starts by increasing the tubing diameter from the factory 1 ¾” to a mandrel bent 3” tubing, then add Spintech's famous super pro streetmufflers, and you have one awesome system.  This design sounds incredible when mashing the accelerator but provides a mellow tone while cruising with almost no interior resonance. We recommend this system for cars pushing over 475 RWHP because on cars with less power, the loss of back pressure may hurt performance.This aluminized system comes with 3" single wall polished tips (4" tips are available as an upgrade).