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Flowmaster

Flowmaster 50 Series HD Chambered Muffler

Part # 8525554 Be the first to write a review

50 H.D. Stainless Steel - 2.50 Dual In / 2.50 Dual Out - Moderate Sound

Flowmaster 50 Series HD Chambered Muffler

Estimated Ship Date: 06/15/2026
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Free Shipping - Lower 48 US States
Advertised Price $327.95
$295.15
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Delta Flow
5

Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

See Emissions Details

Also Bought

50 series HD, three chamber mufflers. Designed primarily for today's heavy duty gas and diesel trucks, this muffler will deliver improved performance, throttle response and mileage. Featuring a deeper, moderate tone with minimal resonance, it is ideal for trucks with modified engines. Constructed of 16 gauge 409S stainless steel material and fully MIG welded for maximum durability.

Features:

  • Improved Horsepower, Torque and Engine Efficiency
  • Recommended for Dodge Ram Hemi, large displacement gas engines and diesel trucks
  • Reduces Interior Resonance
  • Moderate Sound

About Flowmaster

Shop the complete line of Flowmaster products for exhaust systems, mufflers, and more that deliver the iconic Flowmaster sound. Available at Holley.com!

Body Height5.00 IN
Body Length18.00 IN
Body Width10.00 IN
Brand Flowmaster
California Proposition 65Yes
CategoryExhaust
Clamps IncludedNo
ColorBlack
Emission Code5
Exhaust Tip Quantity0
FinishHigh-Temperature Paint
FitmentUniversal
Grade TypePerformance
Hanger IncludedNo
Heat Shield AttachedNo
Inlet ConnectionSlip-Fit
Inlet Diameter2.50 IN
Inlet Inside Diameter2.50 IN
Inlet LocationDual
Inlet Outside Diameter2.63 IN
Inlet Quantity2
Inlet TypeClamp-On
Weld-On
Mount TypeUses New Hangers (Not Included)
Muffler Series50 Series HD
Muffler TypeChambered
Outlet ConnectionSlip-Fit
Outlet Inside Diameter2.50 IN
Outlet LocationDual
Outlet Outside Diameter2.63 IN
Outlet Quantity2
Outlet TypeDual
Overall Length23.00 IN
Part TypeExhaust Muffler
Product TypeStreet Mufflers
ReversibleNo
ShapeOval
Sound LevelModerate
Sub CategoryMufflers
TunableNo
Universal Or Specific FitUniversal
Vehicle TypeDiesel
Truck/SUV
UPC700042022106
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
Part Number8525554
5

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Instructions - Flowmaster Warranty 26 Update.pdf
Instructions - street_applications.pdf
Universal Muffler - Some adaptation may be required.

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    *Free Shipping and Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.