Dynomax Race Bullet 24222 Exhaust ResonatorDynoMax Race Bullet mufflers feature 100 percent welded construction for lifelong durability. The 'Pure Unadulterated POWER' and lightweight, compact design make it the ultimate race muffler. The unrestricted, straight through design is dyno tested and track proven. Each muffler uses our exclusive Contin uous Roving Fiberglass (CRF) Technology which helps provide up to a 4 dbA sound reduction, on most race applications, while maintaining a deep race