Cart 0
Go!
× clear filters

Performance Mufflers

Our name isn't "Modern Day Muffler" for no reason, we are here to be your one stop shop for mufflers! From near OEM replacements to racing, we have what you need! We have teamed up with top exhaust brands like Flowmaster, Hooker, FlowTech, Holley, Jones Exhaust, Dinan, and Edge, to be able to bring you top end mufflers the Modern Day way, which means you're guaranteed pricing and service that can't be beat!
Flowmonster Performance Muffler 3 inch dual inlet & outlet 12599-FM 409 Stainles - Modern Day Muffler

Flowmonster Performance Muffler 3 inch dual inlet & outlet 12599-FM 409 Stainles
Flowmonster Performance Muffler 2.50 Dual IN/2.50 Dual OUT 11386-FM 409 Stainles - Modern Day Muffler

Flowmonster Performance Muffler 2.50 Dual IN/2.50 Dual OUT 11386-FM 409 Stainles
Flowmonster 2-Chamber Muffler 42541-FM 2 Chamber; 2.50 in. Offset Inlet/2.50 in. - Modern Day Muffler

Flowmonster 2-Chamber Muffler 42541-FM 2 Chamber; 2.50 in. Offset Inlet/2.50 in.
Flowmonster 2-Chamber Muffler 425403-FM 2.50 Dual Inlet / 3.00 Center - Modern Day Muffler

Flowmonster 2-Chamber Muffler 425403-FM 2.50 Dual Inlet / 3.00 Center
Flowmonster Performance Muffler 3 in inlet & 3 Outlet Polished Stainless Steel 1 - Modern Day Muffler

Flowmonster Performance Muffler 3 in inlet & 3 Outlet Polished Stainless Steel 1
Flowmonster 1-Chamber Muffler 42510-FM 2.50 Center Inlet / 2.50 Center Outlet - Modern Day Muffler

Flowmaster 42510-FM FlowMonster 1-Chamber Muffler Center In/Center Out: 2.500 in
Flowmonster 2-Chamber Muffler 42543-FM 2.50 Offset Inlet / 2.50 Offset Outlet - Modern Day Muffler

Flowmonster 2-Chamber Muffler 42543-FM 2.50 Offset Inlet / 2.50 Offset Outlet
Flowmonster 2-Chamber Muffler 430402-FM 3.00 Center Inlet / 2.50 Dual Outlet - Modern Day Muffler

Flowmonster 2-Chamber Muffler 430402-FM 3.00 Center Inlet / 2.50 Dual Outlet
Flowmaster FlowFX Muffler 72198 - Modern Day Muffler

Flowmaster FlowFX Muffler 72198
Flowmonster Round Performance Muffler 2.5 Inlet/ 2.5 Outlet 14416-FM Polished St - Modern Day Muffler

Flowmonster Round Performance Muffler 2.5 Inlet/ 2.5 Outlet 14416-FM Polished St
Flowmonster Performance Muffler 3 inch inlet & 3 inch outlet 11219-FM 409 Stain - Modern Day Muffler

Flowmonster Performance Muffler 3 inch inlet & 3 inch outlet 11219-FM 409 Stain
Flowmonster Round Performance Muffler 3.00 Inlet/ 3.00 Outlet 14419-FM Polished - Modern Day Muffler

Flowmonster Round Performance Muffler 3.00 Inlet/ 3.00 Outlet 14419-FM Polished
Sold Out
Flowmaster Super 10 Series Chambered Muffler 843016 - Modern Day Muffler

Flowmaster Super 10 Series Chambered Muffler 843016
Flowmonster 1-Chamber Muffler 430102-FM 3.00 Center Inlet / 2.50 Dual Outlet - Modern Day Muffler

Flowmonster 1-Chamber Muffler 430102-FM 3.00 Center Inlet / 2.50 Dual Outlet
Jones Exhaust Max Flow Oval Muffler 3" IN/2.5 Dual out - Modern Day Muffler

Jones Exhaust Max Flow Oval Muffler 3" IN/2.5 Dual out
Jones Exhaust JUB911 Quiet Tone Muffler 2.5 Inlet 2.5 Outlet - Modern Day Muffler

Jones Exhaust JUB911 Quiet Tone Muffler 2.5 Inlet 2.5 Outlet
Jones Exhaust 4" x 9" x 14" Max Flow Offset In Center Muffler 2" IN/OUT MF1234 - Modern Day Muffler

Jones Exhaust 4" x 9" x 14" Max Flow Offset In Center Muffler 2" IN/OUT MF1234
Jones Exhaust A3520S Glasspack Muffler Straight 2" Inlet & Outlet

Jones Exhaust A3520S Glasspack Muffler Straight 2" Inlet & Outlet
Jones Exhaust JFP200D Flow Pack Muffler 2" Dual Inlet, 2" Outlet

Jones Exhaust JFP200D Flow Pack Muffler 2" Dual Inlet, 2" Outlet
MAGNAFLOW 11386 Muffler Stainless Steel 2.5 ID Dual In Dual Out 4 X 9 Oval 20 lg - Modern Day Muffler

MAGNAFLOW 11386 Muffler Stainless Steel 2.5 ID Dual In Dual Out 4 X 9 Oval 20 lg
Sold Out
Flowtech Purple Hornies Glasspack - 50230FLT - Modern Day Muffler

Flowtech Purple Hornies Glasspack - 50230FLT
Sold Out
Flowmaster FlowFX Muffler 3.50 in. Center Inlet/Outlet Clamp On Stainless Steel - Modern Day Muffler

Flowmaster FlowFX Muffler 3.50 in. Center Inlet/Outlet Clamp On Stainless Steel
Sold Out
Flowmaster FlowFX Muffler 71416 - Modern Day Muffler

Flowmaster FlowFX Muffler 71416
Flowmaster FlowFX Muffler 71235 - Modern Day Muffler

Flowmaster FlowFX Muffler 71235