Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Availability
87 Results Found For "ratio"
Showing In Stock Items. Show All 111 Items.
Allstar Performance 1:1 Ratio Pulley Kits
Allstar Performance 1:1 ratio pulley kits are lightweight, double-groove aluminum pulleys. They include crank and water pump pulleys and belts for use with Allstar block or head-mount power steering pumps. Order the model recommended for your engine application.
( 14 )
$114.95
—
$114.99
Summit Racing™ V-Belt Pulley Kits
Summit Racing™ V-belt pulley kits make an ideal replacement as a standard ratio pulley kit for worn stock parts. They're available in a choice of chrome plated or black painted finish—and include crankshaft pulley, water pump pulley, power steering pulley, alternator pulley, the brackets, and hardware. Order the kit designed for your vehicle and engine application.
( 129 )
$131.99
—
$147.99
Proform Super-Street Roller Rocker Arms
These Proform Super-Street roller rocker arms will help rid your engine of internal friction. They feature a race-proven, cage bearing fulcrum and roller tip. The Super-Street rocker arms not only unleash horsepower, but they also lengthen valvetrain component life and reduce wear and tear on valve stem tips. Proform rockers are precision-machined to ensure consistency and ratio accuracy, and they have a great looking anodized finish.
( 128 )
$189.99
—
$245.99
Summit Racing™ Pro Series Stainless Rocker Arms
Summit Racing™ Pro Series stainless rocker arms will pay big dividends in performance! The arms are machined from premium-quality material to provide high yield strength and resist deflection, as well as extraordinary fatigue resistance. They feature full complement friction-reducing needle bearings—and incorporate an exceptional design that provides plenty of clearance for higher open valve spring pressures. Each rocker body includes polished top lines and is carefully assembled and inspected to provide the finest rocker arms available in today's racing and high performance industry. Order the set with size and ratio recommended for your engine application.
( 37 )
$234.99
—
$244.99
Summit Racing™ Stamped Steel Roller Tip Rocker Arms
Get the horsepower and durability you want at a price that suits you with these stamped steel roller tip rocker arms from Summit Racing™. Formed from heat-treated steel, their long slot design and precision-ground roller will deliver the performance you're after--even in high-lift applications. Each set includes rocker arms, grooved rocker balls, and nuts.
( 90 )
$129.99
—
$145.99
COMP Cams Magnum Roller Tip Rocker Arms
One way to increase power is to increase lift. That's what makes COMP Cams Magnum roller tip rocker arms so popular. They're one of the highest lift rockers you can get outside of racing. And, along with the lift, you also get a ball pivot roller tip to prevent valve stem and guide wear.
( 290 )
$116.95
—
$240.95
Summit Racing™ Cast Steel Roller Tip Rocker Arms
For the hardest working part of your valvetrain, use Summit Racing™ cast steel roller tip rocker arms. Our chromoly steel long-slot rockers will give you a long service life and allow for less deflection and valve guide scrubbing. Each rocker features a precision-ground roller and includes a grooved, heat-treated rocker ball and nut.
( 104 )
$140.99
—
$182.99
COMP Cams High Energy Diecast Aluminum Rocker Arms
Finally, you can get high performance without a high price with COMP Cams High Energy diecast aluminum rocker arms. COMP Cams is a leader in valvetrain technology and has developed these High Energy rockers to provide a superior strength to weight ratio to withstand the hardships of your street performance and mild race engines, while adding valve lift. These diecast aluminum, larger-than-stock rocker bodies are designed to be stiffer and more durable. They feature needle-bearing fulcrums and roller tips to reduce friction and lower oil temperatures for even more horsepower potential. Maybe you're on a budget, or maybe you just appreciate getting the most for your coin; make an affordable choice without sacrificing performance--get COMP Cams High Energy diecast aluminum rocker arms.
( 223 )
$133.95
—
$249.95
Proform Pedestal Mount Extruded Aluminum Roller Rocker Arms
These Proform pedestal mount extruded aluminum roller rocker arms rid your engine of internal friction. Their race-proven full needle-bearing fulcrum and roller tip not only unleash horsepower, they also lengthen valvetrain component life, and reduce wear and tear on valve stem tips. They're precision-machined to ensure consistency and ratio accuracy.
( 47 )
$245.99
Chevrolet Performance Small Block V8 or V6 Rocker Arm Kits
Chevrolet Performance small block V8 or V6 rocker arms are available individually or in sets, and include stamped steel or aluminum rockers with mounting hardware.
( 15 )
$126.79
Summit Racing™ Pro SBC 4-7 Swap Camshafts
Summit Racing™ Pro SBC 4-7 Swap hydraulic flat tappet camshafts are American made and utilize ultra-modern lobe technology. The revised firing order increases power through better mixture distribution and smoother running through equalized crankshaft journal loading. These racing cams are available in Stage 1 through Stage 8 configurations. Order the model with specs recommended for your Chevy small block engine application.
( 14 )
$169.50
—
$199.99
PRW Sportsman Steel Roller Tip Rocker Arms
PRW Sportsman steel roller tip rocker arms are an ideal choice for a significant cross-section of engines. Anything from a mild street rebuild to the performance demands of off-track, Circle Track, and drag racing. These 4340 chromoly steel rocker bodies feature a longer pivot slot for higher lift camshafts. They're much stronger than stamped steel, so rocker arm flex is negligible. The roller tip minimizes scrubbing from the valve stem pushing forcefully against the valve guide. This reduces friction and frees up an additional 15 to 30 hp over stock models. PRW Sportsman steel roller tip rocker arms are an excellent performance alternative to stock rockers. Order the set recommended for your specific vehicle and engine size. Features, items, and specs: * Wide assortment of ratios to suit almost any cam profile * PRW RockerLocs * Rated at 350 lbs. open spring pressure * Heat-treated pivot balls
( 37 )
$150.64
—
$207.41
Summit Racing™ Rocker Arm Pro Packs
Increase horsepower with one of these Summit Racing™ rocker arm Pro Packs. They include a set of chromoly steel roller rocker arms to help rid your engine of internal friction. They feature a race-proven, full needle-bearing fulcrum and roller tip. Not only do the Summit Racing™ rocker arm Pro Packs unleash horsepower, but they also lengthen valvetrain component life and reduce wear and tear on valve stem tips. The rocker arms are precision-machined to ensure consistency and ratio accuracy and they have a great looking anodized finish.
( 14 )
$221.98
COMP Cams Magnum Rocker Arm and High Energy Pushrod Kits
COMP Cams Magnum rocker arm and high energy pushrod kits are convenient packages that take the guess work out of choosing perfectly match performance components. If you want to experience a world of difference with your rocker arms and pushrods, then you need a set of these COMP Cams Magnum rocker arm and high energy pushrod kits.
( 85 )
$222.95
—
$241.95
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 )
$232.95
Howards Cams Long Slot Rocker Arms
Manufactured from the highest quality steel alloy and heat-treated, Howards Cams long slot rocker arms make an excellent choice for stock engines or street performance. These rocker arm sets include anti-gall rocker balls and locking nuts. Serious parts for serious power performance, choose Howards Cams!
( 9 )
$109.99
—
$154.99
COMP Cams Pro Magnum Roller Rocker Arms
COMP Cams Pro Magnum roller rocker arms combine the strength of 8650 chromoly steel and the weight savings of aluminum rockers. 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 were rocker arms that are strong where they need to be, and actually weigh 5 percent less at the valve than comparable aluminum rockers. This means more RPM and valve train stability.
( 16 )
$249.95
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 )
$121.99
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 )
$122.95
—
$239.95
Jones Racing Serpentine Drive System Kits
Save weight and gain the extra horsepower that will get you into the winner's circle! These high performance kits feature less-tension-required belts and lightweight billet aluminum pulleys and components. Make your setup efficient to produce the horsepower that you want with Jones Racing serpentine drive kits.
Not Yet Reviewed
$210.00
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 )
$249.95
Proform Stamped Roller Tip Rocker Arms
Proform stamped roller tip rocker arms the affordable way to reduce internal valvetrain friction and valve stem wear. They feature an extra-long slot that eliminates rocker-to-stud interference when using high-lift cams, and are available at a fraction of the cost of similar rockers.
( 9 )
$102.99
—
$104.99
Clearance
Summit Racing™ Pro SBC Turbo Camshafts
Are you looking for a great made-in-America hydraulic roller cam for your small block Chevy? Summit Racing's™ new Pro SBC turbo camshafts are affordable and utilize the latest lobe design technology. Starting with American bearing steel billets, the cams are precision-machined on a modern CNC grinder with CBN diamond wheels for unmatched quality. They're designed with optimal valve events for turbocharging. With four levels and performance options to select from, Pro SBC camshafts will deliver just the idle characteristics you're looking for.
( 1 )
$279.99
$229.50
Engine Works Performance Series Aluminum Rocker Arms
Engine Works offers Performance Series aluminum rocker arms for a wide range of applications, including many small block Ford engines from 1962 and up. The rocker arms are available in 3/8 in. or 7/16 in. stud size. Details: * Performance Series * Full roller style * 6061-T6 extruded aluminum * 1.6 rocker arm ratio * Set of 16
Not Yet Reviewed
$233.71
—
$246.21
