EXHAUST - Mufflers

Patented flow directors channel exhaust flow for maximum power. 100% aluminized for sharp appearance and long life. Fiberglass matting delivers a mellow, true performance sound. Reduces backpressure for increased horsepower and fuel economy.

Starting at $55.00 ea (Super Turbo)


Receive a special discounted price when you call in with a Dynomax part number!














40 Series Original Flowmaster
The 40 Series is the most aggressive sounding street and strip muffler in Flowmaster's product line. If you are looking for the original "Flowmaster tone," the 40 Series is the one. The performance street and strip muffler will also generate interior resonance within the vehicle. So if you want to really hear your exhaust system inside the vehicle as well as outside it, the 40 Series is for you.

#42441
40 Series Muffler, 2.25" INLET (Offset) / OUTLET (Center)

#42443
40 Series Muffler, 2.25" INLET (Offset) / OUTLET (Offset), Ford Mustang

#42541
40 Series Muffler, 2.50" INLET (Offset) / OUTLET (Center)

#42543
40 Series Muffler, 2.50" INLET (Offset) / OUTLET (Offset)

Internet Rebate - 
$10 OFF!
Show Room Sales Price Starting @79.95
Internet Rebate -10.00
Your Price69.95
Click here for a printable version.

Technical Information
60 Series Delta Flow
Import & Small Engines High Performance Street/Strip Four & Six Cylinder Vehicles

Technical Information
80 Series
Crossflow Application Newer Camaro/Firebird Buick Grand Nationals/ Street Rods

Technical Information
40 Series Delta Flow
Origianl Flowmaster Tone Powerfully Aggressive Tone With/Without Catalytic Converters If the Original 40 Series is a Bit too loud, this is your muffler! Great on Mustang GT’s!

Technical Information
40 Series The Original Flowmaster (Two Chamber)
Original Flowmaster Tone Off Road & Race applications Noticeable Interior Resonance Great on Mustang GT’s! For Trucks, our most Aggressive sounding Flowmaster Keep it Legal! Flowmaster’s single-inlet / dual-outlet, still sounds great with a catalytic converter!

Technical Information
Super 40 Series
Significantly Outflows the older 2 chamber mufflers Even More Horsepower Less Interior sound and Deeper Exterior Sound 5 x 10 Inch Case Modeled after our Race Mufflers Also Available in Single inlet / Dual outlet, For most Pickups

Technical Information
50 Series Delta Flow
Street and Strip Same Performance as 40 Series With/Without Catalytic Converters The Single Inlet / Single Outlet sounds great on V-8’s, V-6’s, and Straight 6’s Also Available in Single Inlet / Dual – Outlet For most Trucks Less interior and exterior noise than the Super 40

Technical Information
50 Series SUV-Performance
Large Displacement Street Cars Sport Utility & Truck Applications Available in Single inlet / Dual outlet, For Most Pickups and SUV’s Available in Dual-Inlet / Dual-Outlet For 96-99 Chevy Vor-Tec’s (5.7) and Late Model Heavy Duty Chevy Trucks A Bit Louder inside and outside of Vehicle than it's Big Brother the 70 Series

Technical Information
70 Series Big Block II
Newer Trucks Tow Vehicles & RV’s Trucks with Dual Exhaust Available in Single-Inlet / Dual-Outlet, For most Trucks and SUV’s Available in Dual-Inlet / Dual-Outlet For 96-99 Chevy Vor-Tec’s (5.7) and Late Model Heavy Duty Chevy Trucks A bit Quieter inside and outside the vehicle than it's Little Brother the "50 Series SUV".
Important Note: The Same 40 Series Muffler installed on a 2003 F150, V8 Engine WILL NOT sound the same on a 2003 Dodge Ram V8! An NAW representative can help you answer this question- What do you want to hear inside your vehicle at 70mph, radio on, windows rolled up, and AC on?

Delta Flow Technology










Developed from Flowmaster's line of Delta Force® race mufflers, Delta Flow® technology provides superior scavenging of exhaust gases even over a comparable (standard) Flowmaster muffler. This results in increased horsepower, torque and fuel economy, along with reductions in exterior sound levels and interior resonance. These three deflectors function properly only when they've been precisely placed and welded to exact specifications. Together they provide superior reductions in exterior sound levels as well as resonance transmitted through the exhaust system and into the vehicle.

The key to Delta Flow technology is the mutiple deflectors that form the delta shape of the Power Chamber.™ While most Flowmaster mufflers have relied upon a single deflector, recent advancements in production technology have allowed Flowmaster to construct mufflers with multiple deflectors. By investing in state-of-the-art electronic sensing devices, Flowmaster can now produce mufflers with internal elements placed at tolerances of +/- .004", twice the standard required by OEM car manufacturers. In fact, no one in the exhaust business today has tighter specifications. It is this exact placement of components within the muffler that makes Delta Flow® technology possible. If you've ever played a musical instrument or watched a piano tuner at work, you understand how slight the differences are between being in-tune and being out-of-tune. That's exactly the case with Delta Flow® technology. Only sophisticated electronic sensing devices can place the deflectors with the accuracy required. Because without it, performance would suffer and you wouldn't get the famous "Flowmaster sound." While Delta Flow® technology is currently available in selected 40 Series,™ 50 Series™ and 60 Series™ mufflers (as well as Delta Force® race mufflers), development of new applications is ongoing.

Stainless Steel Mufflers
#10010
STAINLESS STEEL MUFFLER 4" STRAIGHT TIP W/ DETACHABLE SILENCER FOR TWO DISTINCTIVE SOUNDS
High Polished Stainless Steel Precision TIG Welded Assembly Universal Fit, Multiple Sizes Increased Exhaust Flow for MORE Horsepower and Superior Performance
Internet Rebate - 
$20 OFF!
Show Room Sales Price Starting @79.95
Internet Rebate -20.00
Your Price59.95
Click here for a printable version.
Stainless Steel Mufflers
#10020
STAINLESS STEEL MUFFLER 4" STRAIGHT TIP W/ DETACHABLE SILENCER FOR TWO DISTINCTIVE SOUNDS
High Polished Stainless Steel Precision TIG Welded Assembly Universal Fit, Multiple Sizes Increased Exhaust Flow for MORE Horsepower and Superior Performance
Internet Rebate - 
$20 OFF!
Show Room Sales Price Starting @79.95
Internet Rebate -20.00
Your Price59.95
Click here for a printable version.
Stainless Steel Mufflers
#10050
STAINLESS STEEL MUFFLER 4" STRAIGHT TIP
High Polished Stainless Steel Precision TIG Welded Assembly Universal Fit, Multiple Sizes Increased Exhaust Flow for MORE Horsepower and Superior Performance
Internet Rebate - 
$20 OFF!
Show Room Sales Price Starting @79.95
Internet Rebate -20.00
Your Price59.95
Click here for a printable version.
Stainless Steel Mufflers
#10060
STAINLESS STEEL MUFFLER 4" STRAIGHT TIP
High Polished Stainless Steel Precision TIG Welded Assembly Universal Fit, Multiple Sizes Increased Exhaust Flow for MORE Horsepower and Superior Performance
Internet Rebate - 
$20 OFF!
Show Room Sales Price Starting @79.95
Internet Rebate -20.00
Your Price59.95
Click here for a printable version.
Stainless Steel Mufflers
#10070
STAINLESS STEEL MUFFLER 3.5" STRAIGHT TIP
High Polished Stainless Steel Precision TIG Welded Assembly Universal Fit, Multiple Sizes Increased Exhaust Flow for MORE Horsepower and Superior Performance
Internet Rebate - 
$20 OFF!
Show Room Sales Price Starting @79.95
Internet Rebate -20.00
Your Price59.95
Click here for a printable version.
Stainless Steel Mufflers
#10080
STAINLESS STEEL MUFFLER 3.5" SLANT TIP
High Polished Stainless Steel Precision TIG Welded Assembly Universal Fit, Multiple Sizes Increased Exhaust Flow for MORE Horsepower and Superior Performance
Internet Rebate - 
$20 OFF!
Show Room Sales Price Starting @79.95
Internet Rebate -20.00
Your Price59.95
Click here for a printable version.
Stainless Steel Mufflers
#10090
STAINLESS STEEL MUFFLER 4" STRAIGHT TIP
High Polished Stainless Steel Precision TIG Welded Assembly Universal Fit, Multiple Sizes Increased Exhaust Flow for MORE Horsepower and Superior Performance
Internet Rebate - 
$20 OFF!
Show Room Sales Price Starting @79.95
Internet Rebate -20.00
Your Price59.95
Click here for a printable version.
Stainless Steel Mufflers
#10100
STAINLESS STEEL MUFFLER 4" SLANT TIP
High Polished Stainless Steel Precision TIG Welded Assembly Universal Fit, Multiple Sizes Increased Exhaust Flow for MORE Horsepower and Superior Performance
Internet Rebate - 
$20 OFF!
Show Room Sales Price Starting @79.95
Internet Rebate -20.00
Your Price59.95
Click here for a printable version.

Stainless Steel Mufflers
Stainless Steel Mufflers Universal Fit
Starting at $89.95