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40 Results Found For "ratio"
Showing In Stock Items. Show All 54 Items.
Summit Racing™ Steel Rocker Arms
Summit Racing™ steel rocker arms are horsepower builders! These rocker arms can give you that extra lift you've been looking for. They're made from a higher quality, heat-treated steel, and have a longer slot to avoid stud interference. We even include anti-gall grooved pivot balls and locking nuts. You're getting one heck of a deal on horsepower.
( 109 )
$50.99
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$99.99
Jesel Sportsman Series Shaft Rocker Arms
Since their release, Jesel Sportsman Series shaft rocker arms have proven themselves to be the ultimate replacements for inadequate stud rocker assemblies on OEM and aftermarket cylinder heads. The 2024 aluminum bodied rocker arms are designed to withstand open spring pressures of up to 900 lbs., while maintaining precise valve lash settings. They are designed to bolt on with little to no cylinder head modifications and in most cases still fit under a stock valve cover. The rocker geometry is preset and engineered using the common valve supplied with the specific cylinder head to provide a bolt-on-and-go installation. If you're still spending aggravating hours adjusting your stud rockers only to have to repeat the procedure the next weekend, Jesel Sportsman Series shaft rocker arms are your solution. Choose a set designed for your application.
( 25 )
$86.00
Howards Cams Track Smart Nitro-Carbided Rocker Arms
Howards Cams Track Smart nitro-carbided rocker arms offer 3-5 times greater resistance to wear, fatigue, and fracture in high-stress areas. These steel, long slot-style engine components are available for a wide range of vehicle applications. Order the recommended stud size and rocker arm ratio replacements.
Not Yet Reviewed
$94.99
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$96.99
COMP Cams High Energy Rocker Arms
High Energy rocker arms from COMP Cams are excellent replacements for stock engine rebuilds with a stock or High Energy camshaft. They eliminate the noise and slop associated with worn or high-mileage stock rockers and match or exceed factory specifications.
( 28 )
$67.95
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$93.95
Proform Stamped Steel Rocker Arms
These Proform stamped steel rocker arms are designed for use when a roller tip is not required. Featuring proven OEM quality, their extra-long slot eliminates rocker-to-stud interference when using high-lift cams.
( 7 )
$77.99
Crower Enduro Stainless Steel Stud Mount Roller Rocker Arms
These proven rollerized rockers from Crower are made from 17-4PH stainless steel with 1025 heat treating. They feature premium oversized needle bearings, sure-lock rocker nuts, and alloy steel tip rollers. Their superior, lightweight body design provides plenty of clearance for large-diameter springs.
( 24 )
$85.99
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$93.99
COMP Cams Ultra Pro Magnum XD Roller Rocker Arms
Built to outlast and outperform in accuracy and strength, Ultra Pro Magnum XD roller rocker arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application from 1.5 to 1.8 in 0.5 in. increments for Chevy and 1.6 to 1.73 for various Ford applications is available. These Ultra Pro Magnum XD rockers are fully rebuildable and boast precision-sorted needle bearings and hardened roller tips. And, they work with most diameter springs and retainers. The XD design utilizes advanced FEA and CAD design and development to improve strength, stiffness and MOI (moment of inertia) optimization for drag and circle track applications.
( 60 )
$55.95
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$59.95
COMP Cams Ultra Pro Magnum Rocker Arms
Utilizing years of valvetrain design experience, the latest FEA stress analysis technology, and an exhaustive testing regiment (dyno and Spintron), COMP Cams engineering team left no detail to chance. Everything from casting techniques to valve spring clearance was scrutinized to ensure that Ultra Pro Magnum rocker arms not only lived up to the lofty standards of their predecessor, but also took stud mount rocker performance, stability, and value to a whole new level. The most noticeable advancement centers around their nearly unbreakable investment cast 8650 chromoly body. The arched, web-like design delivers a nearly 29 percent increase in strength and rigidity, while reducing the moment of inertia and optimizing the dynamic balance. The resulting rockers maximize lift and valvetrain control at high rpm. The increased retainer and valve spring clearances of the new design enable the use of large-diameter valve springs, retainers, and locks, without clearance or fitment issues. The new black oxide exterior finish offers a distinctive appearance, along with long-term corrosion resistance. The COMP Cams Ultra Pro Magnum rocker arms feature an oversized trunnion and precision-sorted needle bearings designed for use with high-load valve springs. These unique rockers also feature hardened roller tips for reduced friction and elimination of the valve stem "side loading" that causes premature valve guide wear.
( 206 )
$51.95
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$76.95
Manley Stamped Steel Rocker Arms
Get the horsepower and durability you want at a price that suits you with Manley stamped-steel rocker arms. They're made from high quality, heat-treated steel and feature a longer slot to avoid stud interference. They include anti-gall grooved pivot balls and locking nuts for a quick, easy installation.
( 3 )
$65.98
Summit Racing™ OE Rocker Arms for LS Series Bearing Upgrade Kits
Summit Racing™ OE rocker arms for LS Series bearing upgrade kits are specifically designed for those individuals who tend to use OE GM rockers with the pivoting/bearing upgrade. They're manufactured from high-strength, SAE-rated steel and sport a natural finish. For all of your part needs, go with Summit Racing™--quality, value-priced performance parts.
( 9 )
$93.99
Harland Sharp Original Roller Rockers
If you plan on adding performance to your street machine or building a serious racer, Harland Sharp Original Series roller rockers are recommended for you. Using the very latest manufacturing technology and only the very finest materials, the Original Series rockers incorporate race-proven enhancements, such as improved strength, performance, and lighter weight over conventional rocker arm designs. Don't settle for any old rocker arm--go with a true leader in roller rocker arm technology--Harland Sharp.
( 179 )
$70.99
March Performance Serpentine Pulleys and Pulley Sets
March's serpentine pulleys are available in a 25 percent underdrive to free up extra horsepower or a high water flow ratio to help increase cooling in those hot-running street rods. They're machined on precision CNC equipment and come in steel or aluminum. The steel pulleys are machined from tough billet steel for strength and are given a high-gloss, black powdercoated finish. The aluminum pulleys are machined from 6061-T6 billet aluminum and are given a polished finish for good looks.
( 18 )
$61.99
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$68.99
COMP Cams Ultra Gold ARC Series Aluminum Rocker Arms
Designed specifically for high performance street and race engines, COMP Cams Ultra Gold ARC Series aluminum rocker arms are precision CNC-machined to strict tolerances. They incorporate modern technology and design features to create the most advanced aluminum rocker arms available. Proven to withstand extremely aggressive spring pressure, the COMP Cams Ultra Gold ARC Series aluminum rocker arms use their CNC-machined aluminum design for high quality and the ultimate in ratio accuracy.
( 114 )
$50.95
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$65.95
Namura Technologies Top-End Repair Kits
Top-end rebuilds can help to improve the performance of your ride, and Namura Technologies top-end repair kits will keep your ATV, UTV, or off-road motorcycle running in peak condition! They include everything you need: pistons, top-end gasket kit, and wrist pin bearings (where applicable) in one convenient, time-saving package. Namura kits are available for a wide variety of makes and models, with specific bore and compression ratio parts to service your specific vehicle. Choose to do your rebuild with repair kits from Namura Technologies—the people who make pistons with attitude!
( 2 )
$51.99
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$97.99
Howards Cams LS Series Direct Bolt-On Roller Rockers
Add some punch to your Chevy LS with these Howards Cams LS Series direct bolt-on roller rockers. These roller rockers are easy replacements for your stock LS rockers and feature plenty of advancements that help you make more power and get better throttle response. Howards designed these roller rockers to be direct bolt-on pieces, so there is no need to change pushrods, guideplates, rocker studs, or valve covers, and your engine bay can keep that sleeper, bone stock look. These rocker arms are constructed from aluminum and feature needle-bearing fulcrums and roller tips to decrease friction and increase performance. Howards Cams offers these LS Series bolt-on roller rockers in either stock ratio or a high-lift, 1.80 ratio, so you can choose which one best fits your goals.
( 3 )
$52.99
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$60.99
Clearance
Crower Stud Mount Late Model Rocker Arms
Crower stud mount self-aligning rocker arms are available for late model small and big block Chevy, Dodge, Magnum trucks, and the V10 Viper. Features include: * Self-aligning roller tip to hold rocker in place * Emissions-legal certified ARB #D-410
( 6 )
$82.99
$51.50
Edelbrock Aluminum Roller Rockers
Edelbrock roller rockers are manufactured in the USA from lightweight 7129 grade aluminum. The body is CNC-machined and then micro-polished and anodized for durability. The trunnion race, roller pin, and roller tip are centerless-ground for superior quality. A high-quality Torrington needle bearing fulcrum combined with a roller tip ensure smooth operation and performance. Their full-body design will accommodate up to 1.650 in. diameter springs. These Edelbrock aluminum roller rockers include thick-walled adjusting nuts and 4140 steel polylocks.
( 4 )
$55.95
COMP Cams Pro Magnum Shaft Mount Roller Rocker Arms
COMP Cams Pro Magnum shaft mount roller rocker arms combine the strength of 8650 chromoly steel and the weight savings of aluminum rockers. COMP Cams took advantage of computer design to simulate the stresses that affect rockers under various operating loads. This allowed the engineers to lessen the rockers' mass at non-critical areas and strengthen the areas that take the most punishment. The results are rocker arms that are strong where they need to be and actually weigh 5 percent less at the valve than comparable aluminum rockers.
( 31 )
$79.95
PRW Pro Series Shaft-Mount Rocker Arms
PRW Pro Series shaft-mount rocker arm kits are comprised of components from the finest manufacturers in the world. CNC machined billet steel pedestals, ground steel alloy rocker shafts, PRW alloy steel fasteners, and studs and bolts are included in the complete kits for a professional install. Each rocker body is relieved for extra valve spring clearance and anodized for added strength. Choose the kit designed for your vehicle.
( 1 )
$68.01
PRW Platinum Series Shaft-Mount Rocker Arms
PRW Platinum Series shaft-mount rocker arm systems fulfill the needs of successful racers and performance engine builders at every level. The Performance Quotient PQx rocker arms are made from quality alloy extrusions. These systems include CNC-machined billet steel pedestals, and ground, steel alloy rocker shafts—along with PRW SCM-4135 alloy steel fasteners, studs, and bolts. PRW Platinum Series shaft-mount rocker complete kits include all the components and hardware required for a professional installation. Order the system recommended for your specific vehicle and engine size. Features, items, and specs: * Several systems to suit many cam profiles * 8 pairs of shaft-mount rockers with adjustable cup-style valve lash adjusters * SAE 42100 full complement precision needle and cage roller bearings * Rated up to 750 lbs. open spring pressure * Internal oiling system for long-lasting performance
( 10 )
$50.03
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$58.18
COMP Cams Aluminum Roller Rocker Arms
COMP Cams aluminum roller rocker arms are made from a high-quality alloy, anodized for durability and good looks. They have needle-bearing trunnions to allow for high valve spring loads (over 350 lbs.) and a tensile strength of 80,000 psi. While these rockers are more expensive than COMP Cams High Energy or Magnum rockers, they're a great choice for any race application.
Not Yet Reviewed
$53.95
COMP Cams Ultra Gold ARC Series Aluminum Break-In Rocker Arms
These COMP Cams Ultra Gold ARC Series aluminum break-in rockers are designed with a lower-than-stock ratio to help break in new Chevrolet V8 big block applications. They are engineered to eliminate excess open spring pressure, making them a must-have for the break-in process. If you have a new big block to break in, no other cams will help you do the job better than these COMP Cams Ultra Gold ARC Series aluminum break-in rocker arms.
Not Yet Reviewed
$50.95
PRW Power Plus Nitro-Carb Steel Rocker Arms
PRW Power Plus Nitro-Carb steel stud mount rocker arms help flex associated with OEM or aftermarket stamped rocker arms at high rpm. Gas nitride is a process is used to increase surface hardness significantly. When combined with high-grade steel rocker bodies, the result is improved durability, better lubrication and less wear on rocker arms and pushrods. The added benefit is a dramatic increase in the stability of the rocker arm when used with higher valve spring pressures. These Nitro-Carb rocker arms are an excellent choice for circle track racers looking for the extra performance "edge" when used in conjunction with other component parts. The rocker arms are designed with a long slot for 3/4 race and mild performance camshafts. OEM design elements with standard rocker arm pad meet most circle-track sanctioning body rules and regulations. Order the rocker arms for your application needs. Benefits/Characteristics: * Nitro-Carb rocker arms specifically designed for higher spring pressures and hardened pushrods * Racing or performance replacement rockers for engine rebuilds with stock or PowerPlus+ Cams * Reduced noise and slop the flex associated with worn or lesser quality stock rocker arms * Adjusting nuts and pivot balls are included where required for installation * Long slot for 3/4 race and mild performance camshaft compatibility
Not Yet Reviewed
$99.38
Scorpion Off-Road Series Rocker Arms
Scorpion Off-Road Series rocker arms are made for the most demanding endurance demanding off-road applications—which makes them a premium choice for many Jeep models from the 1960s on up! These pedestal-style aluminum arms are available in different ratios, in your choice of either adjustable or non-adjustable configurations and are sold individually or in sets of 12. Order the model needed for your application. Off-Road Series rocker arm features: * Body geometry optimized to deliver a true 1.6 or 1.7 ratio (please specify ratio needed for your application) * Available in both adjustable and non-adjustable configurations * Aerospace grade 7000 series billet aluminum body * Precision ground needle roller bearings * Centerless ground fulcrum and roller * Bearing quality ground 100 carbon steel pin * Steel dual pedestal ensures correct rocker arm to valve alignment * Mounting hardware included * Will handle 380 lbs. of open valve spring pressure (max recommended spring pressure for 5/16 fastener) * Will clear stock valve cover (with removal of internal PCV baffle)
( 14 )
$51.56
