Flowtech Headers, Mufflers & More

Headers, Upright, 1 5/8 in. Primary, 3 in. Collector, Stainless Steel, Natural, Chevy, Small Block, Pair

Part Number: BIG-11545FLT

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Nov 14, 2025 if ordered today

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Muffler, Red Hots, 2 1/2 in. Inlet/2 1/2 in. Outlet, Red Steel, Each

Part Number: BIG-50252FLT

4.61 out of 5 stars ( 36 )

Estimated Ship Date: Today

Exhaust Manifolds, Rams Horn, Cast Iron, Silver Ceramic Coated, Chevy, Small Block, STREET ROD, Pair

Part Number: BIG-11704-1FLT

3.83 out of 5 stars ( 6 )

Estimated Ship Date: Nov 14, 2025 if ordered today

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Headers, Turbo, Up and Forward, 304 Stainless Steel, Natural, 1.750 in. Primary, 2.50 in. V-Band Collector, Chevrolet, Small Block Gen I, Pair

Part Number: BIG-11569FLT

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Headers, Upsweep, Stainless Steel, High-temperature Black Paint, Standard Flange, 2 1/4 in. Primary Tube O.D., Round Port, Chevrolet, Big Block, Pair

Part Number: BIG-11553FLT

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 14, 2025 if ordered today

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Headers, Shorty, Steel, Painted, Chevy, GMC, 5.7L, with A.I.R. Injection, Pair

Part Number: BIG-91831FLT

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Headers, Shorty, Steel, Ceramic Coated, Chevy, GMC, Pickup, 4.8, 5.3L, Pair

Part Number: BIG-91843-1FLT

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Headers, Long Tube, Steel, Black Painted, Chevy, Small Block, Pair

Part Number: BIG-11112FLT

4.93 out of 5 stars ( 29 )

Estimated Ship Date: Today

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Headers, Long Tube, One Piece, 1.5 in. Primary, 3.0 in. Collector, 18 Gauge Steel, 3 Bolt Collector Flange, Painted Temporary Black, Ford, 302, Pair

Part Number: BIG-12500FLT

4.0 out of 5 stars ( 18 )

Estimated Ship Date: Today

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Headers, Tri-Y, Steel, Polished, 1 1/2 in. Primary Tube O.D., 2.500 in. Collector Diameter, Angle/Straight Plug, Ford, 4.3L, 4.7L, 5.0L, Pair

Part Number: BIG-12120FLT

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 17, 2025 if ordered today

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Bracket, Air Conditioning, Steel, Chevy, Small Block, Kit

Part Number: BIG-10042FLT

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

Exhaust Gaskets, Header, Real-Seal, Chevy, Small Block, Pair

Part Number: BIG-99150FLT

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Headers, Long Tube, Steel, Ceramic Coated, Chevy, Big Block, Pair

Part Number: BIG-31130FLT

3.95 out of 5 stars ( 22 )

Estimated Ship Date: Today

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Header Reducers, 3-Bolt Flange, 3 in. Inlet, 2.5 in. Outlet, Steel, Natural, Pair

Part Number: BIG-10110FLT

3.67 out of 5 stars ( 9 )

Estimated Ship Date: Today

Headers, Shorty, Stainless Steel, Natural, 1 5/8 in. Primary, Chevy, GMC, Small Block, Pair

Part Number: BIG-11578FLT

2.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Header Extension, Afterburner Thrust Toobs, Bolt-On, 3 Bolt, 3.00 in. Inlet/Outlet, 12.00 in. Length, Pair

Part Number: BIG-10511FLT

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

Headers, Turbo, Up and Forward, 304 Stainless Steel, Polished, 1.875 in. Primary, 2.500 in. V-Band Collector, Chevrolet, Small Block Gen I, Pair

Part Number: BIG-11573FLT

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Headers, Long Tube, Steel, Ceramic Coated, Chevy, Small Block, Pair

Part Number: BIG-31110FLT

2.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Exhaust Gaskets, Header, Real-Seal, Chevy, Big Block, Pair

Part Number: BIG-99153FLT

Not Yet Reviewed

Estimated Ship Date: Today

Muffler, Raptor Turbo, 2 in. Inlet/2 in. Outlet, Aluminized Steel, Each

Part Number: BIG-50050FLT

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Today

Headers, Shorty, Steel, Painted, Ford, Mercury, Pair

Part Number: BIG-12103FLT

2.0 out of 5 stars ( 3 )

Estimated Ship Date: Nov 14, 2025 if ordered today

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Exhaust, Y-Pipe, Steel, Aluminized, Chevy, GMC, Pickup, 5.0, 5.7L, Each

Part Number: BIG-11504YFLT

3.13 out of 5 stars ( 15 )

Estimated Ship Date: Today

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Muffler, Raptor Turbo, 2 1/2 in. Inlet/2 1/2 in. Outlet, Aluminized Steel, Each

Part Number: BIG-50052FLT

4.43 out of 5 stars ( 14 )

Estimated Ship Date: Today

Headers, Shorty, Stainless Steel, Natural, Ford, Pair

Part Number: BIG-12148FLT

1.86 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Headers, Shorty, 1 5/8 in. Primary, 2.50 in. Collector, Steel, Pair

Part Number: BIG-91674FLT

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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