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Items 1 - 23 of 23 Items
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FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 3.00 Center In / 3.00 Offset Out - Aggressive SoundIn Stock
$149.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 Stainless Steel - 3.00 Offset In / 3.00 Center Out - Aggressive SoundIn Stock
$170.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 3.00 Center In / 3.00 Center Out - Aggressive SoundIn Stock
$149.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 Stainless Steel - 3.50 Offset In / 3.50 Offset Out - Aggressive SoundEst. Ship Date: 10/23/2026
$193.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 3.00 Offset In / 3.00 Center Out - Aggressive SoundIn Stock
$149.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 2.50 Offset In / 2.50 Center Out - Aggressive SoundIn Stock
$149.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 2.50 Center In / 2.50 Offset Out - Aggressive SoundIn Stock
$149.95
Best-SellerFlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 Stainless Steel - 2.50 Offset In / 2.50 Offset Out - Aggressive SoundIn Stock
Advertised Price $171.95$84.95Save $87.00
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 2.50 Center In / 2.50 Center Out - Aggressive SoundIn Stock
$149.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 2.25 Offset In / 2.25 Center Out - Aggressive SoundIn Stock
$152.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 Stainless Steel - 3.00 Center In / 2.50 Dual Out - Aggressive SoundIn Stock
$169.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40® Stainless Steel - 2.50 Offset In / 2.50 Center Out - Aggressive SoundEst. Ship Date: 12/31/2026
$170.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 3.00 Offset In / 3.00 Same Side Out - Aggressive SoundIn Stock
$149.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 2.50 Offset In / 2.50 Offset Out - Aggressive SoundIn Stock
$149.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 3.00 Center In / 2.50 Dual Out - Aggressive SoundIn Stock
$173.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 2.50 Offset In / 2.50 Same Side Out - Aggressive SoundIn Stock
$152.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 3.00 Offset In / 3.00 Offset Out - Aggressive SoundIn Stock
$149.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 2.25 Center In / 2.25 Center Out - Aggressive SoundIn Stock
$160.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 Stainless Steel - 2.50 Dual In / 2.50 Dual Out - Aggressive SoundIn Stock
$170.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 2.50 Dual In / 2.50 Dual Out - Aggressive SoundEst. Ship Date: 10/23/2026
$173.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 3.00 Offset In / 2.50 Dual Out - Aggressive SoundIn Stock
$173.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 - 2.25 Offset In / 2.25 Offset Out - Aggressive SoundIn Stock
$149.95
FlowmasterFlowmaster Super 40 Series Chambered Muffler Super 40 Stainless Steel - 3.00 Offset In / 3.00 Offset Out - Aggressive SoundIn Stock
$170.95
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Super 40 Series
Born from our Top Ten race muffler lineup, the Flowmaster Super 40 is built for street and strip performance. Engineered with Delta Flow Technology, it delivers powerful performance gains for high-horsepower vehicles. The oversized black case reduces interior resonance while producing that deep, aggressive exterior tone Flowmaster is known for. Perfect for muscle cars and performance builds that demand both sound and power.