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Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52571 Muffler, Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

SKU: FLO52571

Mufflers

Flowmaster 70 Series Big Block II Steel 2.5 Inch Muffler 52571 Muffler, Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

SKU: FLO52571

Mufflers
A$806.53
LOW STOCK! Est Ship 4-7 days. In stock at 2 locations (6 available)

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Description

Muffler - 70 Big Block II - 2.5 in Offset Inlet - 2.5 in Center Outlet - 22 x 10 x 5 in Oval Body - 28 in Long - Steel - Black Paint - Universal - Each


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 01:10:50

Data: v4.2 - Upd: 2026-11-11 03:04:24

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Flowmaster, Flowmaster (holley)
StreetFX SKU flo52571
SFX Item ID 4984045
Accounting SKU flo-52571
Manufacturer SKU 52571
Manufacturer UPC 700042014422
Alternative References 52571, FLM52571, FLO-52571

Muffler, Big Block II 70 Series, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Black, Each

These 70 Series Big Block II mufflers are designed around a large case for maximum volume and efficiency. They're 2 in. narrower than the original Big Block muffler, making them easier to install into tight areas. Other features include a mild, mellow exhaust tone and a resonant tuning chamber for reduced interior sound levels.

Product Attributes
BrandFlowmaster
Manufacturer's Part Number52571
Part TypeMufflers
Product LineFlowmaster 70 Series Big Block II Mufflers
UPC700042014422
Muffler MaterialSteel
Inlet Diameter (in.)2.50 in.
Outlet Diameter (in.)2.50 in.
Inlet Quantity1
Outlet Quantity1
Inlet LocationOffset
Outlet LocationCenter
Case ShapeOval
ReversibleNo
Internal ConstructionChambered
Muffler FinishBlack
Case Exterior Length (in.)22.00 in.
Overall Length (in.)28.00 in.
Thickness (in.)5.000
Width (in.)10.000 in.
Outlet StyleStandard, without tip
RemanufacturedNo
QuantitySold individually.

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