Product description
70 Series - 2.25 Dual In / 3.00 Center Out - Mild Sound
Flowmaster 70 Series Chambered Muffler
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Supplier details checked 2026-09-23 · Test catalog
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70 Series - 2.25 Dual In / 3.00 Center Out - Mild Sound
Flowmaster 70 Series Chambered Muffler
Recommended for SUV/trucks/motorhomes/tow vehicles
Improved Horsepower, Torque and Engine Efficiency
Mild to stock exterior exhaust tone
Minimal interior resonance
Universal Muffler - Not a direct fit. Some adaptation required. Adapters needed for OEM Exhaust.
Flowmaster 2.25 (D)IN/3 (C)OUT 70 Series BBII Muffler
225 DIN3 COUT 70 SERIES BBII
FM70SRS
The 70 series utilizes Flowmaster's Delta Flow® technology and an enlarged case for improved sound control along with mileage and power gains. Perfect for use on trucks, SUV's, RVs, tow vehicles and high performance street cars where space allows. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
MUFF 2.25IN