Pro Series Muffler - 4.00 Center In / 4.00 Center Out - Moderate Sound 2001 Pontiac Firebird Adjustable lower trailing arms allow

Adjustable lower trailing arms allow you to dial in your wheel base for the perfect wheel and tire fitment inside your wheel well

Note: Bump steer adjustment tools and theory can be found HERE

BMR Suspensions MTCA052 Chrome-moly double-adjustable rod end lower control arms are available in red and black hammertone powdercoat for long-lasting good looks

These extension harnesses and bolt kit is required when Installing BBK 1633/16330 or 1856/18560 Headers on a 2015-2017 Mustang 5

Pro Series Muffler - 4.00 Center In / 4.00 Center Out - Moderate Sound 2001 Pontiac Firebird Adjustable lower trailing arms allowThe Pro Series mufflers work on all applications ranging from street trucks, diesel pullers and RV pushers to every class of racing on dirt or asphalt. During development, at the dyno and track, the Pro Series mufflers consistently delivered performance that is equal to or surpasses open pipe systems, while dramatically reducing sound levels across the RPM range.