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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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Items 1-25 of 29
10° Titanium 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 »
10° 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 »
7° 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 »
AFR Aluminum Heads - BBC
Are you looking for big torque and big horsepower numbers? Our BB Chevy line of medium volume intake runners will provide you with exactly that. The phrase having your cake and eating it to would...More Details »
AFR Aluminum Heads - SBC
AFR is reviving its popular 220cc moniker due to overwhelming request from customers for a larger bolt on standard valve location head. Unlike the previous 220, the new Eliminator version requires...More Details »
AFR Aluminum Heads - SBF
AFR 195cc Renegade Ford head is debuting in our lineup and almost defies the law of physics flowing a whopping 315 CFM from a modest sized intake port. This head comfortably outflows its 10cc...More Details »
AFR Intake Manifolds - SBC
SBC Titan Intake Manifolds are the next generation of high performance.
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.
Aluminum Valve Covers - BB Chevy
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 or street machine....More Details »
Aluminum Valve Covers - SB Chevy
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 »
Aluminum Valve Covers - SB Ford
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 »
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 - NEW
Check out the Recently Listed Cylinder Heads.
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 - NEW
Check out the Recently Listed Intake Manifold Gaskets.
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 Manifold Gaskets - SB Ford
Pit Stop USA is The Online Motorsports Superstore! We feature Intake Manifold Gaskets for Small Block Ford at low everyday prices.
Intake Manifolds - NEW
Check out the Recently Listed Intake Manifolds.
Lash Caps
Pit Stop USA is The Online Motorsports Superstore! We feature Lash Caps at low everyday prices.
Rocker Arm Fastener Kits - NEW
Check out the Recently Listed Rocker Arm Fastener Kits.
Rocker Arm Stud Girdles - NEW
Check out the Recently Listed Rocker Arm Stud Girdles.
Rocker Arms and Components - NEW
Check out the Recently Listed Rocker Arms and Components.
Stud Girdles
Pit Stop USA is The Online Motorsports Superstore! We feature Stud Girdles at low everyday prices.
Items 1-25 of 29

Airflow Research (AFR) Products

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Items 1-25 of 128
These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: 8mm Valve Stem Diameter, Bead Lock style, Complete Set, 16 pcs. More Details »
Item #: AFR9009
Condition: New
Same Day Shipping!
Ships from Michigan.
Price: $40.00
Sale: $38.80
Save: 3%
Save: $1.20
Qty:

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: Standard 10 Degree Valve Locks 11/32" More Details »
Item #: AFR9005
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Ships from Michigan.
Price: $40.00
Sale: $38.80
Save: 3%
Save: $1.20
Qty:

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Ford, 58cc Combustion Chambers, 3/8'' Rocker Arm Studs, CARB EO #250-3, Sold in Pairs, 2 Pack More Details »
Item #: AFR1402
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $1,699.00
Sale: $1,648.03
Save: 3%
Save: $50.97

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These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Ford, 58cc Combustion Chambers, 3/8'' Rocker Arm Studs, Sold in Pairs, 2 Pack More Details »
Item #: AFR1399
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $1,699.00
Sale: $1,648.03
Save: 3%
Save: $50.97

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These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Ford, 60cc Combustion Chambers, 5/16'' Pedestal Rocker Arm Mounting, CARB EO #250-3, Sold in Pairs, 2 Pack More Details »
Item #: AFR1472
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $1,699.00
Sale: $1,648.03
Save: 3%
Save: $50.97

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These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Ford, 72cc Combustion Chambers, 3/8'' Rocker Arm Studs, Sold in Pairs, 2 Pack More Details »
Item #: AFR1387
Condition: New
Limited Supply: Only 4 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $1,699.00
Sale: $1,648.03
Save: 3%
Save: $50.97

Shipping
Qty:

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Ford, 58cc Combustion Chambers, 3/8'' Rocker Arm Studs, Sold in Pairs, 2 Pack More Details »
Item #: AFR1388
Condition: New
Limited Supply: Only 4 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $1,699.00
Sale: $1,648.03
Save: 3%
Save: $50.97

Shipping

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Ford, 58cc Combustion Chambers, 3/8'' Rocker Arm Studs, CARB EO #250-3, Sold in Pairs, 2 Pack More Details »
Item #: AFR1422
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $1,699.00
Sale: $1,648.03
Save: 3%
Save: $50.97

Shipping

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, 65cc Combustion Chambers, Angle Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1040
Condition: New
Limited Supply: Only 4 Left!
Same Day Shipping!
Oversized / Overweight item. Ships from Michigan.
Price: $1,699.00
Sale: $1,597.59
Save: 6%
Save: $101.41

Qty:

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, 65cc Combustion Chambers, Straight Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1034
Condition: New
Limited Supply: Only 8 Left!
Same Day Shipping!
Oversized / Overweight item. Ships from Michigan.
Price: $1,699.00
Sale: $1,597.59
Save: 6%
Save: $101.41

Qty:

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, 75cc Combustion Chambers, Angle Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1038
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Oversized / Overweight item. Ships from Michigan.
Price: $1,699.00
Sale: $1,597.59
Save: 6%
Save: $101.41

Qty:

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, 75cc Combustion Chambers, Straight Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1036
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
Oversized / Overweight item. Ships from Michigan.
Price: $1,699.00
Sale: $1,597.59
Save: 6%
Save: $101.41

Qty:

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, Street CNC Porting, 1.290'' Hyd Roller Dual Valve Spring, 58cc Combustion Chambers, Angle Spark Plug, Assembled, CARB OE #D-250-2, Sold in Pairs, 2 Pack More Details »
Item #: AFR1031
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $1,840.00
Sale: $1,784.80
Save: 3%
Save: $55.20

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These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: Race Porting Cylinder Heads, Aluminum, Assembled, 205cc Intake, Small Block Ford , (Set of 2) More Details »
Item #: AFR1450
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Oversized / Overweight item. Ships from Michigan.
Price: $2,135.00
Sale: $2,026.35
Save: 5%
Save: $108.65


These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Ford, 72cc Combustion Chambers, 205cc Intake Ports, 7/16'' Rocker Arm Studs, Sold in Pairs, 2 Pack More Details »
Item #: AFR1458
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
Oversized / Overweight item. Ships from Michigan.
Price: $2,135.00
Sale: $2,026.14
Save: 5%
Save: $108.86


These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, Race Ready CNC Porting, 75cc Combustion Chambers, Standard Exhaust Port Configuration, Angle Spark Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1050
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $1,825.00
Sale: $1,770.25
Save: 3%
Save: $54.75

Shipping

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, Race Ready CNC Porting, 65cc Combustion Chambers, Standard Exhaust Port Configuration, Angle Spark Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1054
Condition: New
Limited Supply: Only 4 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $1,825.00
Sale: $1,770.25
Save: 3%
Save: $54.75

Shipping

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, Competition Package Race Ready CNC Porting, 65cc Combustion Chambers, Standard Exhaust Port Configuration, Angle Spark Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1103
Condition: New
Limited Supply: Only 3 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $2,165.00
Sale: $2,100.05
Save: 3%
Save: $64.95

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These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, Race Ready CNC Porting, 65cc Combustion Chambers, Standard Exhaust Port Configuration, Angle Spark Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1110
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $2,225.00
Sale: $2,158.25
Save: 3%
Save: $66.75

Shipping

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, Race Ready CNC Porting, 75cc Combustion Chambers, Standard Exhaust Port Configuration, Angle Spark Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1112
Condition: New
Limited Supply: Only 0 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $2,225.00
Sale: $2,158.25
Save: 3%
Save: $66.75

Shipping
These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, Competition Package Race Ready CNC Porting, 65cc Combustion Chambers, Spread Exhaust Port Configuration, Angle Spark Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1114
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $2,225.00
Sale: $2,158.25
Save: 3%
Save: $66.75

Shipping

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: Race Porting Cylinder Heads, Aluminum, Assembled, 220cc Intake, Small Block Ford , (Set of 2) More Details »
Item #: AFR1451
Condition: New
Limited Supply: Only 4 Left!
Same Day Shipping!
Oversized / Overweight item. Ships from Michigan.
Price: $2,225.00
Sale: $2,114.20
Save: 5%
Save: $110.80


These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Ford, 72cc Combustion Chambers, 220cc Intake Ports, 7/16'' Rocker Arm Studs, Sold in Pairs, 2 Pack More Details »
Item #: AFR1456
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $2,225.00
Sale: $2,158.25
Save: 3%
Save: $66.75

Shipping
Qty:

These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, Race Ready CNC Porting, 65cc Combustion Chambers, Standard Exhaust Port Configuration, Angle Spark Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1068
Condition: New
Limited Supply: Only 0 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $1,825.00
Sale: $1,770.25
Save: 3%
Save: $54.75

Shipping
These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm
Description: SB-Chevy, Competition Package Race Ready CNC Porting, 65cc Combustion Chambers, Standard Exhaust Port Configuration, Angle Spark Plug, Assembled, Sold in Pairs, 2 Pack More Details »
Item #: AFR1121
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
FREE SHIPPING! Oversized / Overweight Fees Waived On This Item! Ships from Michigan.
Price: $2,225.00
Sale: $2,158.25
Save: 3%
Save: $66.75

Shipping

Items 1-25 of 128

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.