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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 101-125 of 127
Description: Valve Cover, Tall, Breather Holes, AFR Logo, Aluminum, Black Powder Coat, Small Block Ford, Pair
Item #: AFR6715
Condition: New
Limited Supply: Only 2 Left!
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Price: $254.99
Sale: $252.35
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Description: Rocker Arm Stud Girdle, Aluminum, Blue Anodized, Small Block Ford, Pair
Item #: AFR6207
Condition: New
Limited Supply: Only 4 Left!
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Price: $206.99
Sale: $204.91
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Description: Intake Manifold, Bullitt, Square Bore, Single Plane, Aluminum, Natural, Big Block Ford, Each
Item #: AFR4992
Condition: New
Limited Supply: Only 1 Left!
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Price: $544.99
Sale: $539.14
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Description: Intake Manifold, Bullitt, Dominator Flange, Single Plane, Aluminum, Natural, Big Block Ford, Each
Item #: AFR4993
Condition: New
Limited Supply: Only 1 Left!
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Price: $574.99
Sale: $568.47
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Description: Rocker Arm, 7/16 in Stud Mount, 1.60 Ratio, 0.050 in Offset, Full Roller, Aluminum, Orange Anodized, Small Block Chevy, Set of 16
Item #: AFR6036
Condition: New
Limited Supply: Only 2 Left!
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Price: $545.99
Sale: $539.78
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Description: Intake Manifold Gasket, Composite, 1.837 x 2.268 in Rectangular Port, AFR Bullitt Series Heads, Big Block Ford, Pair
Item #: AFR6893
Condition: New
Limited Supply: Only 0 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $29.99
Sale: $29.22
Save: 3%
Save: $0.77
Description: Cylinder Head, Bullitt, Assembled, 2.250 / 1.760 in Valves, 295 cc Intake, 75 cc Chamber, 1.625 in Springs, Aluminum, Big Block Ford, Pair
Item #: AFR3817
Condition: New
Limited Supply: Only 1 Left!
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Price: $3,172.99
Sale: $3,140.82
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Description: Cylinder Head, Enforcer, Assembled, 2.020 / 1.600 in Valves, 185 cc Intake, 59 cc Chamber, 1.290 in Springs, Aluminum, Small Block Ford, Each
Item #: AFR1351
Condition: New
Limited Supply: Only 0 Left!
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Price: $688.99
Sale: $681.32
Save: 1%
Save: $7.67

Description: Cylinder Head, Enforcer, Assembled, 2.020 / 1.600 in Valves, 210 cc Intake, 64 cc Chamber, 1.290 in Springs, Aluminum, GM LS-Series, Each
Item #: AFR1501
Condition: New
Limited Supply: Only 2 Left!
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Price: $699.99
Sale: $692.70
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Description: Cylinder Head, Enforcer, Assembled, 2.250 / 1.880 in Valves, 325 cc Intake, 122 cc Chamber, 1.550 in Springs, Aluminum, Big Block Chevy, Each
Item #: AFR3001
Condition: New
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Price: $918.99
Sale: $909.77
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Description: Valve Seat, Exhaust, 1.696 in OD, 1.600 in ID, Iron, Each
Item #: AFR9070
Condition: New
Limited Supply: Only 1 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $12.99
Sale: $12.37
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Save: $0.62
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Description: Valve Seat, Intake, 2.200 in OD x 1.780 in ID x 0.375 in, Iron, Each
Item #: AFR9060
Condition: New
Limited Supply: Only 5 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $12.99
Sale: $12.37
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Description: Pushrod Guide Plate, 5/16 in Pushrod, Flat, Steel, Black Oxide, Small Block Chevy / Ford, Set of 8
Item #: AFR6103-8
Condition: New
Limited Supply: Only 5 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $46.99
Sale: $46.15
Save: 2%
Save: $0.84
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Description: Rocker Arm Nut, 3/8-24 in Thread, Steel, Black Oxide, Stud Girdle, Chevy V8, Set of 16
Item #: AFR6216-16
Condition: New
Limited Supply: Only 0 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $123.99
Sale: $122.76
Save: 1%
Save: $1.23
Description: Cylinder Head, Street Eliminator, Assembled, 2.020 / 1.600 in Valves, 180 cc Intake, 65 cc Chamber, 1.290 in Springs, Straight Plug, Aluminum, Small Block Chevy, Pair
Item #: AFR0916
Condition: New
Limited Supply: Only 0 Left!
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Price: $2,087.99
Sale: $2,066.54
Save: 1%
Save: $21.45

Description: Cylinder Head, Eliminator Race, Assembled, 2.080 / 1.600 in Valves, 195 cc Intake, 65 cc Chamber, 1.260 in Springs, Angle Plug, Aluminum, Small Block Chevy, Pair
Item #: AFR1095-716
Condition: New
Limited Supply: Only 1 Left!
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Price: $2,837.99
Sale: $2,809.13
Save: 1%
Save: $28.86

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Description: Cylinder Head, Eliminator Race, Assembled, 2.100 / 1.600 in Valves, 220 cc Intake, 75 cc Chamber, 1.550 in Springs, Angle Plug, Aluminum, Small Block Chevy, Pair
Item #: AFR1066
Condition: New
Limited Supply: Only 0 Left!
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Price: $2,323.99
Sale: $2,300.33
Save: 1%
Save: $23.66

Description: Cylinder Head, Eliminator Race, Assembled, 2.100 / 1.600 in Valves, 235 cc Intake, 70 cc Chamber, 1.55 in Springs, Angle Plug, Aluminum, Small Block Chevy, Pair
Item #: AFR1134-TI
Condition: New
Limited Supply: Only 0 Left!
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Price: $3,423.99
Sale: $3,389.28
Save: 1%
Save: $34.71

Description: Cylinder Head, Eliminator Race, Assembled, 2.125 / 1.600 in Valves, 245 cc Intake, 70 cc Chamber, 1.550 in Springs, Angle Plug, Aluminum, Small Block Chevy, Pair
Item #: AFR1137-TI
Condition: New
Limited Supply: Only 4 Left!
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Price: $3,616.99
Sale: $3,580.33
Save: 1%
Save: $36.66

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Description: Valve Lock, 10 Degree, 11/32 in Valve Stem, Standard Height, Steel, Natural, Set of 32
Item #: AFR9005-16
Condition: New
Limited Supply: Only 1 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $51.99
Sale: $50.74
Save: 2%
Save: $1.25
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Description: Valve Lock, 7 Degree, 8 mm Valve Stem, Standard Height, Steel, Natural, Set of 32
Item #: AFR9007-16
Condition: New
Limited Supply: Only 6 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $51.99
Sale: $50.74
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Description: Valve Lock, 10 Degree, 8 mm Valve Stem, Standard Height, Steel, Black Oxide, Set of 32
Item #: AFR9009-16
Condition: New
Limited Supply: Only 9 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $51.99
Sale: $50.74
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Description: Valve Stem Seal, Positive Stop, 8 mm Valve Stem, 0.530 in Guide, Viton, AFR LS1 Cylinder Heads, Set of 16
Item #: AFR6612-16
Condition: New
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Orders over $149 ship free. Oversize items are excluded.
Price: $19.99
Sale: $19.08
Save: 5%
Save: $0.91
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Description: Cylinder Head, Enforcer, Assembled, 2.020 / 1.600 in Valves, 195 cc Intake, 64 cc Chamber, 1.290 in Springs, Angle Plug, Aluminum, Small Block Chevy, Each
Item #: AFR1006
Condition: New
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Price: $630.99
Sale: $624.45
Save: 1%
Save: $6.54

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Description: Cylinder Head, Enforcer, Assembled, 2.020 / 1.600 in Valves, 195 cc Intake, 64 cc Chamber, 1.290 in Springs, Straight Plug, Aluminum, Small Block Chevy, Each
Item #: AFR1001
Condition: New
Limited Supply: Only 9 Left!
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Price: $631.99
Sale: $625.56
Save: 1%
Save: $6.43

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Items 101-125 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.