40 Series - 3.00 Offset In / 3.00 Center Out - Aggressive Sound L5P Silicone Couplings with beads are

Silicone Couplings with beads are used for a leak-free seal

The PAK-2001 Kit also includes a new spring and PRF to bring pressure down to around 12 psi—instead of the current 16-18 psi

very beneficial when under active acceleration and fuel demand has been increased

at a great price

Reliability and power

40 Series - 3.00 Offset In / 3.00 Center Out - Aggressive Sound L5P Silicone Couplings with beads areThe Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.