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The Pro Series cylinder head bolts from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining, and are rated at a whopping 190,000 psi. The Pro Series are also available with hex and 12-point heads. All kits come complete with hardened parallel washers for even load distribution and accurate torque readings.
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$104.99
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$236.99
Summit Racing™ Pro LS piston rings are available in numerous sizes, thicknesses, and materials to complement their line of Pro LS forged pistons. These replacement ring sets serve a variety of important roles, including sealing the combustion chamber, improving heat transfer from the piston to the cylinder wall, and regulating engine oil consumption. Order the rings designed to fit your application.
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$140.99
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$150.99
Summit Racing™ Pro LS Billet adjustable timing sets and gears provide maximum strength and reliability for your engine build. These single-row chains are precision machined and available in standard, 0.005 under, and 0.010 under lengths for align-honed blocks. Summit Racing™ Pro LS Billet adjustable timing sets and gears work with 3-bolt performance cams and come in both 1x and 4x configurations to match any LS engine. More product features include: * Captured degree bushings that allow the cam to be advanced or retarded in 2-degree increments * The upper gears are compatible with factory LS2 timing chains
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$127.99
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$141.99
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.
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$189.99
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$252.99
ARP Pro Series cylinder head studs are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining. ARP Pro Series kits are also available with 12-point nuts, and all studs come complete with hardened parallel washers for an even load distribution and accurate torque readings. With hundreds of models ready to ship, these cylinder head fasteners can be ordered for virtually any style engine.
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$282.99
Get rid of those boring, old valve covers and put on a set of GM-licensed diecast aluminum Chevrolet valve covers from Proform. These premium covers feature stout diecast aluminum construction with thick gasket rails to resist unwanted oil leaks. They are equipped with GM-designed baffles, so you can be sure they'll work well. The covers have recessed Bowtie and Chevrolet logos that are inlaid with classic Chevrolet red. They're available in your choice of chrome plated, black crinkle, or polished finishes.
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$238.95
Proform stamped steel valve covers are 20 percent thicker than typical aftermarket valve covers. This greatly reduces the likelihood of leakage around the valve cover flange area caused by fasteners being over-torqued. These heavy-gauge steel covers are officially licensed GM products and bear the Chevrolet logo and Bowtie Emblem, unless otherwise specified. They're available in both tall and short heights, with either a chrome or black crinkle finish. Oil-restricting baffles are offered in many valve covers, for those who want to maintain the PCV hookup; and all covers are supplied with grommets for use with an air breather and PCV valve.
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$100.95
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$214.95
On Sale
Replace your old and generic looking valve covers with a new pair of Pro LS valve covers from Summit Racing Equipment®. These cast aluminum valve covers are available in a variety of styles, height profiles, and finishes to dress up your engine bay.
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$172.99
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$221.99
ARP Pro Series connecting rod bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and threads are rolled to provide up to ten times more fatigue strength. This makes them far superior to standard OEM fasteners in terms of durability, and fully capable of handling the extra stress of high-combustion engines.
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$101.99
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$245.99
ARP Pro Series rocker arm studs are ideal for competition applications. They are made from 8470 chromoly steel and are heat-treated to 200,000 psi tensile strength. They are concentric within .005 T.I.R. thread pitch to thread pitch, which will give you more consistent rocker geometry. With an extra-large radius base, these studs are more resistant to flex and will provide a more positive seating. Pro Series rocker arm studs were designed for use with Perma-Loc adjusters (not for use with OEM-style, self-locking nuts).
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$100.99
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$146.99
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.
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$229.99
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$255.99
Give your engine an aggressive, custom look with a pair of GM licensed slant edge valve covers by Proform. The diagonal cut of the top section ensures no mess, and the bottom lip will give a tight seal. Each of these valve covers is designed to clear roller rockers and stud girdles. They're available in a variety of styles and finishes for applications from the 1950s and up.
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$254.95
Proform stamped steel Mopar valve covers offer a heavy dose of visual appeal under the hood. The vintage Mopar emblem has been embossed into each steel valve cover, then hand-painted with a shade of blue that matches engine blocks of that era. Oil-restricting baffles are pre-installed, and the valve covers come equipped with air breather and PCV grommets (unless otherwise specified). Sold in pairs, the covers are offered in chrome plate or black crinkle finishes, and will make a great addition to any Chrysler engine. Order the valve covers in application and finish to make your Mopar stand out!
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$116.95
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$127.95
Proform high-performance gear drive sets offer high-precision timing, eliminating chain stretch. They are machined for noise, easy to install, and fit under stock timing covers.
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$100.99
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$129.99
Proform Mopar Licensed small block engine dress up kits feature a great looking chrome or black crinkle powdercoated finish with their new signature blue MOPAR emblem! Made from high quality pre-polished steel, these kits include a pair of tall, baffled engine valve covers, one 14 in. diameter carburetor air cleaner, 10 valve cover wing nuts, one push-in valve cover breather, and two valve cover grommets. These officially licensed MOPAR products are designed to fit small block (LA) MOPAR engines. Add more style under-the-hood with a Proform Mopar Licensed engine dress-up kit.
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$264.95
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.
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$199.99
Summit Racing™ Pro LS wrist pins are the toughest on the market—powerfully built for extreme boost and nitrous. They're specifically developed for Summit Racing™ Pro LS pistons and others that use a 2.250 in. pin length for Spiralocks to clear the reluctor ring without notching. Make no mistake, during high-contact stress and impact loading applications, you'll want the confidence that Summit Racing™ Pro LS wrist pins provide! * Part number SUM-S719 is made from H-13 tool steel, an alloy with 289,000 psi tensile strength (vs. common 9310 alloy tool steel pins at 187,000 psi) * Part number SUM-S720 adds diamond-like coating (DLC) to the H-13 tool steel for increased durability, hardness and much lower friction * The DLC wrist pins (SUM-S720) provide better lubricity for use with low-silicon 2618 alloy pistons that may have pin-bore galling issues at the extremes without DLC * H-13 tempers at 1,000 degrees F and readily accepts DLC application (at 400 F) without structural changes * Rockwell hardness: 54 HRC * Increased ductility of 30,500 ksi compared to other materials * Surface-finished to an RA of less than 1 and a concentricity of .000040 in. * 0.215 in. wall-thickness—the thickest on the market for ultimate strength * Only 135 grams * I.D. honed to remove stress-risers
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$117.99
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$255.99
You may have heard of gas ported pistons in high-end racing engines. Summit Racing™ Pro GPX gas ported rings add this performance to ANY non-gas ported (or even gas-ported) piston. They are also a great way to juice up cast and hypereutectic pistons for little extra money. How do they work? With a series of perfectly oriented slots on the top side of the top piston compression ring, the combustion pressure reaches the inside the ring groove and fully activates the ring sooner and longer for better seal. This not only makes more horsepower; it dramatically reduces blow-by and reduces or even eliminates the need for a catch can. Other benefits? Because the rings are always rotating and directly exposed to the detergents in the oil, these ports stay clean without carbon buildup that fouls out gas ported pistons over time for longer term performance. Since the rings are only activated at high pressures and no part of the cylinder sees the load repeatedly, the engine will last a long time. Nearly all our Summit™ GPX gas ported rings use top-tier nitride steel top rings, ductile seconds, and premium quality stainless oil rings. Better yet, we have them in nearly every popular bore and thickness for virtually any brand or configuration on the market. If you want to pick up power and performance, Summit Racing™ Pro GPX gas ported piston rings are the new standard at a great value!
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$202.99
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$238.99
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.
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$221.98
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$260.98
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.
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$102.99
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$104.99
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.
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$140.99
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$149.99
These Proform Mopar engine dress up kits are ideal for customizing engines and enhancing the appearance of your engine compartment. All parts are chrome plated for lasting beauty.
Not Yet Reviewed
$264.95
Eliminate possible leaks at the front of your engine with one of these Proform diecast aluminum timing chain covers. They are manufactured from 100 percent diecast aluminum and are built to exact factory specifications and tolerances. The covers are available for a variety of engines and configurations, so we're sure to have your application covered.
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$170.99
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.
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$123.99
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