40 Delta Flow® - 2.50 Center In / 2.50 Dual Out - Aggressive Sound Chest Rig Our boxed control arms offer

Our boxed control arms offer improved performance for both weekend cruising and track use

with its on-car adjustability

or straight out the back under the rear bumper for a muscular look

or ignite when subjected to direct flame

including oil seals

40 Delta Flow® - 2.50 Center In / 2.50 Dual Out - Aggressive Sound Chest Rig Our boxed control arms offerThis two chamber design incorporates Flowmaster's Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.