Aluminum Transition, 2" x 2.5" x 3" long 1990-pontiac-firebird-esi3548487 Borla(r) Cat-Back(tm) & Axle-back exhaust

Borla(r) Cat-Back(tm) & Axle-back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower

The delrin-lined Roto-Joints absorb shock and road noise

75″ center to center

The addition of tall 2” drop spindles with taller ball joints significantly improves camber gain and allows for a lower center of gravity

Aluminum Transition, 2" x 2.5" x 3" long 1990-pontiac-firebird-esi3548487 Borla(r) Cat-Back(tm) & Axle-back exhaustVibrant Performance Aluminum Transitions are manufactured from 6063 Aluminum and require minimal surface preparation for tig welding. Vibrant Performance Aluminum Transitions allow for an easy and cost effective way of reducing expanding one tubing size to another and are ideal for fabricators who prefer to not use silicone couplers. They are available in a variety of size combinations ranging from 2 to 4.