40 Series - 2.50 Dual In / 3.00 Center Out - Aggressive Sound 2003-ford-excursion-esi2890534 Helmet - ST6 GT -

Helmet - ST6 GT - Full Face - Snell SA2025 - Head and Neck Restraint Ready - Carbon Fiber - X-Small - Each

Main Cap Support Strap - Front - Wet Sump - Requires Machining - Steel - Small Block Chevy - Each

Timing Chain Set - Race Billet True Roller - Single Roller - 3 Keyway Adjustable - Steel - Cadillac V8 - Kit

Mechanical Cooling Fan - Race Fan - 17 in Fan - 6 Blade - 5/8 in Pilot - 1-3/4 to 2-1/2 in Bolt Pattern - Steel - Silver Paint - Each

Clutch Kit - Heavy Duty - Dual Disc - 10

40 Series - 2.50 Dual In / 3.00 Center Out - Aggressive Sound 2003-ford-excursion-esi2890534 Helmet - ST6 GT -The 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.