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Airflow Research (AFR)
For over thirty years Airflow Research has been defining technological leadership in cylinder head manufacturing and flow dynamics.

Airflow Research (AFR) Categories

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AFR Stainless Steel Valves
AFR Stainless Steel Replacement Valves - 1-Piece high quality replacements for your AFR cylinder heads. Requires AFR Bead Lock style valve locks. Conventional ''square'' style valve locks will not work with these AFR Valves.
AFR Valve Springs
AFR Hydraulic Roller Springs are Premium Grade Chrome Silicon valve springs.
BB Chevy Header Gaskets
PitStopUSA.com offers a variety of Big Block Chevrolet Header Gaskets from the biggest brands in drag racing including Cometic Big Block Chevrolet Header Gaskets, Earl's Big Block Chevrolet Header...More Details »
Carburetor Spacers
Carburetor Spacers from PitStopUSA.com are used for everything from air cleaner clearance to fine tuning the torque curve of your engine. We have a huge selection of aluminum, phenolic and wood...More Details »
Cylinder Heads
Getting a great set of cylinder heads is one of the best ways to create maximum horsepower from your racing engine. Creating the perfect fuel, air, and exhaust flow depends on the size and shape of...More Details »
Exhaust Header/Manifold Gaskets
Pit Stop USA is The Online Motorsports Superstore! We feature Header Gaskets at low everyday prices.
Guide Plates
Pit Stop USA is The Online Motorsports Superstore! We feature Pushrod Guide Plates at low everyday prices.
Intake Manifold Gaskets - BB Chevy
PitStopUSA.com offers a variety of Big Block Chevrolet Intake Manifold Gaskets from the biggest brands in drag racing including AFR Big Block Chevrolet Intake Manifold Gaskets, Brodix Big Block...More Details »
Intake Manifold Gaskets - BB Ford / FE
PitStopUSA.com offers a variety of Big Block Ford and Ford FE Intake Manifold Gaskets from the biggest brands in drag racing including Edelbrock Big Block Ford and Ford FE Intake Manifold Gaskets,...More Details »
Intake Manifold Gaskets - SB Chevy
Pit Stop USA is The Online Motorsports Superstore! We feature Intake Manifold Gaskets for Small Block Chevy at low everyday prices.
Intake Manifolds - Big Block Chevrolet
PitStopUSA.com offers a variety of Big Block Chevrolet Intake Manifolds from the biggest brands in drag racing including Brodix Big Block Chevrolet Intake Manifolds, Dart Big Block Chevrolet Intake...More Details »
Intake Manifolds - Big Block Ford / Ford FE
PitStopUSA.com offers a variety of Big Block Ford and Ford FE Intake Manifolds from the biggest brands in drag racing including Edelbrock Big Block Ford and Ford FE Intake Manifolds, Weiand Big...More Details »
Intake Manifolds - Small Block Chevrolet
Pit Stop USA is The Online Motorsports Superstore! We feature Intake Manifolds for Small Block Chevy at low everyday prices.
Rocker Arm Adjusters
Pit Stop USA is The Online Motorsports Superstore! We feature Rocker Arm Adjuster Nuts & Polylocks at low everyday prices.
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Rocker Arm Stud Girdles
Pit Stop USA is The Online Motorsports Superstore! We feature Stud Girdles at low everyday prices.
Rocker Arms
Pit Stop USA is The Online Motorsports Superstore! We feature Rocker Arms at low everyday prices.
Valve Cover Gaskets - BB Chevy
PitStopUSA.com offers a variety of Big Block Chevrolet Valve Cover Gaskets from the biggest brands in drag racing including Brodix Big Block Chevrolet Valve Cover Gaskets, Dart Big Block Chevrolet...More Details »
Valve Covers
Choosing the right valve covers from PitStopUSA.com huge selection not only provides a reliable seal but make your engine look great when you lift the hood of your race car. Whether you want to...More Details »
Valve Guides
PitStopUSA.com offers a variety of Valve Guides from the biggest brands in drag racing including AFR Valve Guides, Brodix Valve Guides, Dart Valve Guides, Edelbrock Valve Guides and more at low everyday prices.
Valve Locks
Valve locks and retainers hold the retainer in place by using the force of the valve spring to hold the retainer and lock in place, not by the tang locking into the groove on the valve stem. In...More Details »
Valve Seats
PitStopUSA.com offers a variety of Valve Seats from the biggest brands in drag racing including Brodix Valve Seats, Dart Valve Seats and more at low everyday prices.
Valve Spring Retainers
Valve locks and retainers hold the retainer in place by using the force of the valve spring to hold the retainer and lock in place, not by the tang locking into the groove on the valve stem. In...More Details »
Valve Stem Seals
Pit Stop USA is The Online Motorsports Superstore! We feature Valve Stem Seals at low everyday prices.
Items 1-24 of 24

Airflow Research (AFR) Products

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Items 51-75 of 127
Description: Intake Manifold Gasket, 0.060 in Thick, 1.280 x 2.090 in Rectangular Port, Composite, Small Block Chevy, Pair
Item #: AFR6900
Condition: New
Limited Supply: Only 4 Left!
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Price: $23.99
Sale: $22.82
Save: 5%
Save: $1.17
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Description: Intake Manifold Gasket, 2.23 x 1.33 in Rectangular Port, Composite, Small Block Chevy, Pair
Item #: AFR6901
Condition: New
Limited Supply: Only 4 Left!
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Price: $21.99
Sale: $21.25
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Description: Cylinder Head, LS3 Mongoose, Assembled, 2.165 / 1.600 in Valves, 260 cc Intake, 69 cc Chamber, 1.270 in Springs, Aluminum, GM LS-Series, Pair
Item #: AFR1840
Condition: New
Limited Supply: Only 5 Left!
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Price: $3,127.99
Sale: $3,095.95
Save: 1%
Save: $32.04

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Description: Cylinder Head, LSx Mongoose Street, Assembled, 2.020 / 1.600 in Valves, 210 cc Intake, 66 cc Chamber, 1.290 in Springs, Aluminum, GM LS-Series, Pair
Item #: AFR1510
Condition: New
Limited Supply: Only 1 Left!
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Price: $2,798.99
Sale: $2,770.60
Save: 1%
Save: $28.39

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Description: Intake Valve, LSx, 2.020 in Head, 8 mm Stem, 4.900 in Long, Stainless, GM LS-Series, Each
Item #: AFR7207-1
Condition: New
Limited Supply: Only 7 Left!
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Price: $26.99
Sale: $26.04
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Description: Intake Valve, LSx, 2.080 in Head, 8 mm Stem, 4.900 in Long, Stainless, GM LS-Series, Each
Item #: AFR7208-1
Condition: New
Limited Supply: Only 2 Left!
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Price: $26.99
Sale: $26.04
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Description: Cylinder Head, LSx Mongoose, Assembled, 2.020 / 1.600 in Valves, 215 cc Intake, 65 cc Chamber, 1.290 in Springs, Aluminum, GM LS-Series, Pair
Item #: AFR1530
Condition: New
Limited Supply: Only 0 Left!
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Price: $2,821.99
Sale: $2,793.75
Save: 1%
Save: $28.24

Description: Cylinder Head, Magnum Comp, Assembled, 2.250 / 1.880 in Valves, 305 cc Intake, 117 cc Chamber, 1.625 in Springs, Aluminum, Big Block Chevy, Pair
Item #: AFR2100
Condition: New
Limited Supply: Only 0 Left!
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Price: $3,444.99
Sale: $3,409.84
Save: 1%
Save: $35.15

Description: Cylinder Head, Magnum Comp, Assembled, 2.300 / 1.880 in Valves, 357 cc Intake, 121 cc Chamber, 1.625 in Springs, Aluminum, Big Block Chevy, Pair
Item #: AFR2010-TI
Condition: New
Limited Supply: Only 4 Left!
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Price: $4,754.99
Sale: $4,707.27
Save: 1%
Save: $47.72

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Description: Cylinder Head, Magnum Comp, Assembled, 2.350 / 1.880 in Valves, 385 cc Intake, 121 cc Chamber, 1.625 in Springs, Aluminum, Big Block Chevy, Pair
Item #: AFR2020-TI
Condition: New
Limited Supply: Only 3 Left!
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Price: $4,900.99
Sale: $4,851.16
Save: 1%
Save: $49.83

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Description: Cylinder Head, Magnum Street, Assembled, 2.250 / 1.880 in Valves, 290 cc Intake, 112 cc Chamber, 1.550 in Springs, Aluminum, Big Block Chevy, Pair
Item #: AFR3640
Condition: New
Limited Supply: Only 2 Left!
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Price: $3,757.99
Sale: $3,720.37
Save: 1%
Save: $37.62

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Description: Carburetor Spacer, Lightweight, 1 in Thick, 4 Hole, Square Bore, Plastic, Black, Each
Item #: AFR4460
Condition: New
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Orders over $149 ship free. Oversize items are excluded.
Price: $43.99
Sale: $42.97
Save: 2%
Save: $1.02
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Description: Exhaust Valve, Race, 1.600 in Head, 8 mm Stem, 5.030 in Long, Stainless, Small Block Chevy / Ford, Each
Item #: AFR7254-1
Condition: New
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Orders over $149 ship free. Oversize items are excluded.
Price: $26.99
Sale: $26.04
Save: 4%
Save: $0.95
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Description: Intake Valve, Race, 2.080 in Head, 8 mm Stem, 5.000 in Long, Stainless, Small Block Chevy, Each
Item #: AFR7255-1
Condition: New
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Price: $26.99
Sale: $26.04
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Description: Intake Valve, Race, 2.100 in Head, 8 mm Stem, 5.080 in Long, Stainless, Small Block Chevy / Ford, Set of 8
Item #: AFR7256-8
Condition: New
Limited Supply: Only 2 Left!
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Price: $206.99
Sale: $204.26
Save: 1%
Save: $2.73
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Description: Intake Valve, Race, 2.100 in Head, 8 mm Stem, 5.080 in Long, Stainless, Small Block Chevy / Ford, Each
Item #: AFR7256-1
Condition: New
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Orders over $149 ship free. Oversize items are excluded.
Price: $26.99
Sale: $26.04
Save: 4%
Save: $0.95
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Description: Intake Valve, Race, 2.125 in Head, 8 mm Stem, 5.000 in Long, Stainless, Small Block Chevy / Ford, Each
Item #: AFR7253-1
Condition: New
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Price: $26.99
Sale: $26.04
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Description: Intake Valve, Race, 2.250 in Head, 11/32 in Stem, 5.245 in Long, Stainless, Big Block Ford, Each
Item #: AFR7551-1
Condition: New
Limited Supply: Only 2 Left!
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Price: $27.99
Sale: $27.48
Save: 2%
Save: $0.51
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Description: Cylinder Head, Renegade Street, Assembled, 2.020 / 1.600 in Valves, 185 cc Intake, 72 cc Chamber, 1.290 in Springs, Aluminum, Small Block Ford, Pair
Item #: AFR1420
Condition: New
Limited Supply: Only 1 Left!
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Price: $2,085.99
Sale: $2,064.27
Save: 1%
Save: $21.72

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Description: Rocker Arm Nut, 7/16-20 in Thread, 2.100 in Length, Steel, Black Oxide, Stud Girdle, Chevy / Ford V8, Set of 16
Item #: AFR6214-16
Condition: New
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Orders over $149 ship free. Oversize items are excluded.
Price: $123.99
Sale: $122.76
Save: 1%
Save: $1.23
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Description: Rocker Arm Nut, 7/16-20 in Thread, 2.100 in Length, Steel, Black Oxide, Stud Girdle, Chevy / Ford V8, Set of 8
Item #: AFR6214-8
Condition: New
Limited Supply: Only 2 Left!
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Price: $72.99
Sale: $72.01
Save: 1%
Save: $0.98
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Description: Rocker Arm Nut, 7/16-20 in Thread, 2.600 in Length, Steel, Black Oxide, Stud Girdle, Big Block Chevy, Each
Item #: AFR6215-1
Condition: New
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Orders over $149 ship free. Oversize items are excluded.
Price: $10.99
Sale: $10.68
Save: 3%
Save: $0.31
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Description: Rocker Arm Nut, 7/16-20 in Thread, 2.600 in Length, Steel, Black Oxide, Stud Girdle, Big Block Chevy, Set of 8
Item #: AFR6215-8
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Orders over $149 ship free. Oversize items are excluded.
Price: $72.99
Sale: $72.01
Save: 1%
Save: $0.98
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Description: Carburetor Spacer, Lightweight, 1 in Thick, Open, Square Bore, Plastic, Black, Each
Item #: AFR4450
Condition: New
Limited Supply: Only 2 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $43.99
Sale: $42.97
Save: 2%
Save: $1.02
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Description: Cylinder Head, Mexico National Nascar Spec Head, 190 cc Intake, 3/8 in Rocker Arm Studs, Vortec, Small Block Chevy, Pair
Item #: AFR0914W/6400
Condition: New
Limited Supply: Only 0 Left!
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Price: $2,032.99
Sale: $2,011.97
Save: 1%
Save: $21.02

Items 51-75 of 127

More About Airflow Research (AFR)

Pit Stop USA is The Online Motorsports Superstore! For over thirty years Airflow Research has been defining technological leadership in cylinder head manufacturing and flow dynamics. This complete commitment to performance has enabled Airflow Research's cylinder heads to find themselves on the fastest race cars and the most powerful street machines in the country. As every engine builder will attest to, the secret to increasing horsepower and performance lies in the cylinder head, and Airflow Research's cylinder heads outflow and out horsepower everything in their league.