70 Series

The Flowmaster 70 Series "Big Block II" uses a large case for increased volume and added sound reduction that will still fit many applications that our 50 series "Big Block/HD" muffler won't fit. Use on high performance street cars, trucks, SUV's, RV. 

High Performance Street, Truck & RV

Flowmaster - 70 Series Big Block II Muffler, 2.25" IN (D) / 2.25" OUT (D) View  Buy	Flowmaster - 70 Series Big Block II Muffler, 2.25" IN (D) / 3.00" OUT © View  Buy	Flowmaster - 70 Series Big Block II Muffler, 2.50" IN (C) / OUT (O) View  Buy
Flowmaster - 70 Series Big Block II Muffler, 2.50" IN (C) / OUT © View  Buy	Flowmaster - 70 Series Big Block II Muffler, 2.50" IN (O) / OUT (O), Opposite Side Offsets View  Buy	Flowmaster - 70 Series Big Block II Muffler, 2.50" IN (O) / OUT (O), Same Side Offsets View  Buy
Flowmaster - 70 Series Big Block II Muffler, 2.50" IN (O) / OUT © View  Buy	Flowmaster - 70 Series Big Block II Muffler, 3.00" IN (C) / 2.25" OUT (D) View  Buy	Flowmaster - 70 Series Big Block II Muffler, 3.00" IN (C) / 2.50" OUT (D) View  Buy
Flowmaster - 70 Series Big Block II Muffler, 3.00" IN (C) / OUT (O) View  Buy	Flowmaster - 70 Series Big Block II Muffler, 3.00" IN (C) / OUT © View  Buy	Flowmaster - 70 Series Big Block II Muffler, 3.00" IN (O) / 2.50" OUT (D) View  Buy
Flowmaster - 70 Series Big Block II Muffler, 3.00" IN (O) / OUT (O), Opposite Side Offsets View  Buy	Flowmaster - 70 Series Big Block II Muffler, 3.00" IN (O) / OUT (O), Same Side Offsets View  Buy	Flowmaster - 70 Series Big Block II Muffler, 3.00" IN (O) / OUT © View  Buy