72-77 GT550

Relocation of cats to 4-1/2" mufflers reduces heat on rider

95-96 ST - 1100cc

Fits Freedom Performance Radical Radius exhaust systems

Works with or without e-throttle

akrapovic evolution line exhaust system for aprilia Fits:15-20 RSV4 (4-into-1 header with full carbon muffler) (S-A10E8-RC) 72-77 GT550Akrapovic Evolution Line Exhaust System for Aprilia Unleash the full potential of your Aprilia with the Akrapovic Evolution Line exhaust. Designed for riders who demand top performance, this titanium exhaust is significantly lighter than stock, delivering increased power, optimized handling, and an unmistakable racing sound. Crafted with precision, it features a seamless blend of materials like titanium and carbon fiber for ultimate durability and