Whether you're looking for economical yet high quality H-Beam rods, our stock appearing Sportsmaster rods or the best of the best Pro Series rods, Manley is your connecting rod solution. Our designs range from Feather Lites, Tour Lites, Lightweights, Standard Weights and Turbo Tuff in 4340 aircraft quality alloy to our Dirt Series and Dirt Lites made from our exotic 300M material. We offer a massive array of shelf stock part numbers in various lengths for multiple engine applications; and we do custom and private label work as well.

Whether you're looking for economical yet high quality H-Beam rods, our stock appearing Sportsmaster rods or the best of the best Pro Series rods, Manley is your connecting rod solution. Our designs range from Feather Lites, Tour Lites, Lightweights, Standard Weights and Turbo Tuff in 4340 aircraft quality alloy to our Dirt Series and Dirt Lites made from our exotic 300M material. We offer a massive array of shelf stock part numbers in various lengths for multiple engine applications; and we do custom and private label work as well.

Whether you're looking for economical yet high quality H-Beam rods, our stock appearing Sportsmaster rods or the best of the best Pro Series rods, Manley is your connecting rod solution. Our designs range from Feather Lites, Tour Lites, Lightweights, Standard Weights and Turbo Tuff in 4340 aircraft quality alloy to our Dirt Series and Dirt Lites made from our exotic 300M material. We offer a massive array of shelf stock part numbers in various lengths for multiple engine applications; and we do custom and private label work as well.

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

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• 4340 Material Forgings And Turbo Tuff Series 4340 Billet Material
• Multi-Step Heat Treatment Process And Nitrided For Added Strength
• Gun Drilled Mains And Lightened Rod Journals For Weight Reduction

Manley Performance is universally acknowledged as the leading manufacturer of performance and racing valves in the world.

The Severe Duty® series of valves is the Manley signature in the performance and racing industry. Exhaust material XH-428 and intake material NK-844 is offered by no competitor in the world. And no pair of materials show such clear dominance over all others. Ultimate tensile strength of XH-428 at 1500 Degree Fahrenheit is nearly double the competitors’ EV-8. At 1000 Degree Fahrenheit the Manley NK-844 displays more than four times the ultimate tensile of the competition’s best intake material. Further proof of the superiority of the Manley Severe Duty® valves is evident in our comprehensive fatigue tests. In normal operation where valve float is non-existent, a valve will experience 20,000 to 25,000 Pounds of applied stress. However, when valves bounce on the seat the stress immediately soars to 40,000 to 60,000 Pounds. Manley exhaust valves (at 40,000 PSI and 1400 Degree Fahrenheit) ran to 100,000,000 (One Hundred Million) cycles while competitors’ offerings failed at 100,000 cycles. That’s 1000 times better fatigue life.

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• Thin Stem For Increased Flow And Light Weight

Manley Performance is universally acknowledged as the leading manufacturer of performance and racing valves in the world.

Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Offset wrist pin design is utilized for quiet start-ups. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower.

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• Perfect Ring Groove To Skirt Squareness Is Achieved Through Our Unique "One Fixturing" Manufacturing Method That Assures Maximum Horsepower

Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum Horsepower.

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• Contour Forgings Provide The Optimum Balance Between Strength And Weight With No Grain-Interrupting Internal Milling
• Proprietary Multi-Step Top Ring Groove Machining Process Assures Optimum Control Of The Groove's Size, Geometry, Flatness And Finish
• All Final Turning Is Performed In One Fixturing Resulting In Complete Squareness Of Rings To The Cylinder Wall
• Precise Pinhole Machining Results In An Exact Compression Distance As Well As Precise Lock Ring Groove Spacing, Size And Concentricity

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

Manley Performance has brought its trademarked NexTek® valve spring technology to the Chevy LS, Ford Modular, and Chrysler SB HEMI markets. Manufactured from "super clean'hi-tensile strength chrome silicon steel alloy, these springs offer winning performance, long term reliability and the ultimate value. Our proprietary multi-step heat-treating combined with our shot peening process minimizes load loss and offers superior fatigue life. Computer-aided modeling of application specific designs has enabled us to bring the very best springs to these niche markets. We've utilized ovate wire extensively with many conical designs to render the lightest, highest quality, most reliable springs available today; as well as adding a special polishing feature that helps further improve the fatigue life of the part.

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• Valve Springs Have Been Tested By Leading Engine Builders And Are Confirmed To Be The Best Performing Valve Springs On The Market Today
• Proprietary Multi-Step Heat-Treating Combined With Our Shot Peening Process Minimizes Load Loss And Offers Superior Fatigue Life
• Utilized Ovate Wire Extensively With Many Conical Designs To Render The Lightest, Highest Quality, Most Reliable Springs

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

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• Impingement Results In A 20 Percent Improvement In Resistance To Abrasion, A 30 Percent Improvement In Fatigue Strength, And An Overall Improvement In Surface Finish

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

Each design minimizes stress to ensure long service life with high lift camshafts. Retainers are manufactured in our own double spindle CNC machines to exacting tolerances and precise installed height specifications. Locators are manufactured in our own CNC lathes. Heat treated and black oxided after machining. Valve locks are manufactured in our own Swiss turning centers with rigid control over the all-important angle to ensure precise mating with the retainer.