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High-lift, aggressive camshafts and stiff valve springs can cause your rocker arm studs to flex, resulting in a loss of high-rpm power, and, eventually, engine damage and...
High-lift, aggressive camshafts and stiff valve springs can cause your rocker arm studs to flex, resulting in a loss of high-rpm power, and, eventually, engine damage and failure!
A rocker arm stud girdle (also called a valvetrain stabilizer) is a bar that clamps on over the polylocks of your stud-mount rocker arms, linking all the studs together. By distributing the load across all the studs, it adds strength and rigidity to the valvetrain.
Stud girdles might make valve adjustments more difficult, and you may also need taller valve covers. For more information, check out this article from our blog, and then contact us for even more...
High-lift, aggressive camshafts and stiff valve springs can cause your rocker arm studs to flex, resulting in a loss of high-rpm power, and, eventually, engine damage and failure!
A rocker arm stud girdle (also called a valvetrain stabilizer) is a bar that clamps on over the polylocks of your stud-mount rocker arms, linking all the studs together. By distributing the load across all the studs, it adds strength and rigidity to the valvetrain.
Stud girdles might make valve adjustments more difficult, and you may also need taller valve covers. For more information, check out this article from our blog, and then contact us for even more expert advice on your engine-building project.
Top Brands
Stabilizing your high-performance engine is an important job, so you should go with a name brand you trust, instead of some third-party reseller. Summit Racing Equipment sells rocker arm stud girdles from manufacturers like COMP Cams, Harland Sharp, Trick Flow Specialties, Lunati, Howards Cams, and more.
Showing In Stock Items. Show All 18 Items.
A stud girdle distributes load across all the studs, adding strength and rigidity to the valvetrain. Summit Racing™ rocker arm stud girdles stabilize your valvetrain to gain maximum valve lift. Our double-bar design girdles are made from 6061 aluminum and anodized black. They are lightweight, durable, and add strength by tying all 8 studs together. Summit Racing™ rocker arm stud girdles include polylocks and Grade 8 bolts.
( 5 )
$118.99
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$230.99
Howards Cams Maximum Effort stud girdle kits are designed to increase the strength and rigidity of rocker arm studs by eliminating flex and thereby ensuring true rocker arm ratios. These stud girdles are made from the highest quality aluminum and include locking hex head adjusters. Howards Cams aluminum stud girdle kits are a must for all competition engines not using shaft rockers.
( 26 )
$269.99
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$369.99
AFR stud girdles are designed to eliminate the rocker stud flexing and associated horsepower loss that come with today's high-lift cams and high-pressure valve springs. They are manufactured from sturdy anodized aluminum to keep your valvetrain rigid for maximum engine performance. Available for small block Chevy, small block Ford, and big block Chevy applications, the AFR stud girdles will maintain valvetrain longevity throughout the engine's entire rpm range.
( 55 )
$201.60
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$312.90
Stabilize your valvetrain with a stud girdle from Brodix Cylinder Heads. These 3-piece aluminum systems are lightweight, durable, and easy to install. They will stabilize your valvetrain and prevent stud deflection. All stud girdle systems include bolts, AN washers, adjusting nuts with snap rings, and internal springs for easy adjustments. These systems are CNC-machined for a precise fit.
( 12 )
$432.99
PRW billet rocker arm stud girdles are made from 6061-T6 aluminum, manufactured to exacting standards, and the solution to valvetrain instability. PRW stud girdles reduce rocker stud flex to retain critical valve lash adjustments. The result is more accurate valve lift and timing. PRW stud girdles are relieved at the factory to accommodate crankcase evacuation components without the need to visit your local machine shop. These products come complete with PRW RockerLocs. Grab yours today!
( 9 )
$182.46
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$302.59
COMP Cams is proud to offer the finest stud girdles on the market. These stud girdles will tie your studs together, as well as keep them in line.
( 23 )
$211.95
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$432.95
Dart stud girdles can help to improve the performance and reliability of engines equipped with stud-mounted rocker arms. Extra-long adjusting nuts are tightly clamped between rigid aluminum bars that prevent stud deflection under high loads. The valve motion more closely follows cam profile, producing more power and reducing breakage. Unlike universal girdles, these valvetrain stabilizers are designed to fit the specific valve locations, valve angles, and valve lengths in Dart cylinder heads. These kits include hardened poly-lock adjusting nuts.
( 6 )
$288.14
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$540.73
Proform's rocker arm stud girdles reduce flex and part breakage. They increase valvetrain rigidity, which in turn helps minimize energy loss. Each set comes with aluminum stabilizers and polylocks.
( 7 )
$140.99
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$149.99
These CNC-machined Trick Flow® stud girdles for Ford help control valve lift and timing changes due to stud flex, allowing for more consistent high-rpm performance. Each stud girdle is anodized blue and comes with high-quality mounting hardware and hardened adjusting nuts. Tall-style valve covers are required.
( 10 )
$206.99
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$381.99
These Trick Flow® rocker stud girdles for Chevy are CNC-machined and help control valve lift and timing changes due to stud flex, allowing for more consistent high-rpm performance. Each stud girdle is anodized blue and comes with high-quality mounting hardware and hardened adjusting nuts. Tall-style valve covers are required.
( 4 )
$228.99
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$381.99
Stabilize your valvetrain with Harland Sharp stud girdles. These 3-piece aluminum systems are lightweight, durable, and easy to install. They will stabilize your valvetrain and prevent stud deflection. All stud girdle systems include what is necessary for installation on each separate application, like bolts, AN washers, adjusting nuts with snap rings, and internal springs for easy adjustments. These systems are CNC-machined for a precise fit.
( 8 )
$307.99
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$475.99
Edelbrock rocker arm stud girdles are designed to fit the unique geometry of Edelbrock's Victor and Victor Jr. cylinder heads. They feature a 3-piece design, are manufactured from 3/4 in. billet aluminum, and include polylocks for your rocker arms. Now you can make quick, simple valve adjustments, while providing the required support for high-lift camshafts. Help your valvetrain last longer and be more durable with one of these Edelbrock rocker arm stud girdles.
( 2 )
$926.95
Howards Cams Maximum Effort stud girdles are designed to increase the strength and rigidity of the rocker arm studs by eliminating flex and thereby assuring true rocker arm ratios. They are made from the highest quality aluminum, anodized purple, and are spring loaded for easy removal. Howards Cams Maximum Effort stud girdles are a must for all competition engines not using shaft rockers. These kits include locking hex head adjusters.
Not Yet Reviewed
$274.99
COMP Cams Ultra Gold stud girdles are constructed from lightweight 6061-T6 aluminum and are anodized for excellent durability. These one-piece, solid bar stud girdles tie your rocker studs together and locate them in the proper position.
( 1 )
$297.95
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$306.95
Moroso stud girdles are designed to eliminate the rocker stud flexing and associated horsepower loss that come with today's high-lift cams and high-pressure valve springs. Made from sturdy anodized aluminum and heat-treated steel U-bolts to positively lock rocker arm adjusting nuts, these stud girdles can provide a 7 to 22 hp gain. All adjusting nuts and hardware are included.
( 3 )
$333.99
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