Flowmaster 40 Series Delta Flow Muffler - 3" Center Inlet / 2.25" Dual Outlet 600080140 Provides maximum possible spark advance

Provides maximum possible spark advance while preventing damaging detonation or ''ping''

Torque to 79 ft-lbs

& 22mm sleeve nuts

Reliable Ratchet Shift Action

Specially drilled "NASCAR" models are available for those who wish to safety wire their header bolts to prevent loosening

Flowmaster 40 Series Delta Flow Muffler - 3" Center Inlet / 2.25" Dual Outlet 600080140 Provides maximum possible spark advanceThis two chamber design incorporates Flowmaster's patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over Original 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. Features: Durable Fully Welded 16 Gauge Aluminized Steel 3 Year Limited Warranty Aggressive To Moderate