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- Camshafts & Valvetrain
- Pistons & Piston Rings
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Manley Parts and Accessories

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Manley Extreme Duty Series Stainless Steel Valves

Manley Extreme Duty Series performance steel valves are a great choice for supercharged, alcohol-burning, or high-revving engines. These engines generate a lot of heat and require special valves that can handle that kind of punishment. All valves are made from the best stainless steel available, with chrome stems and hardened valve tips. Extreme Duty Series valves are swirl-polished and fully machined and available with either undercut heads or straight stems.

4.5 out of 5 stars ( 2 )

$514.08

Manley NexTek Valve Spring and Retainer Kits

Manley NexTek valve spring and retainer kits are designed and manufactured for optimum consistency, run after run, lap after lap. They are manufactured from super clean high-tensile chrome silicon steel that has been shot peened to MIL specs for maximum fatigue life. Proven to have less load loss than many other springs, they exhibit superior fatigue life and enhance valvetrain stability--everything that counts in winning races!

5.0 out of 5 stars ( 1 )

$534.35

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$565.07

Manley Severe Duty Series Stainless Steel Valves

Manley Severe Duty series performance valves are a great choice for your high performance or race engine. All valves are made from stainless steel (intakes are NK-844; exhausts are XH-428) with chrome stems and hardened valve tips. Severe Duty series valves are made of superior materials, are fully machined and swirl polished, and are available with either undercut "Pro Flo" stems or straight stems.

4.94 out of 5 stars ( 17 )

$514.08

Manley Platinum Series Pistons

Manley Platinum Series pistons are designed to provide trouble-free installation, excellent reliability, and maximum horsepower for your application. Available in 2618 and 4032 forgings, they provide the optimum balance between strength and weight, with no grain-interrupting internal milling. The Platinum Series pistons' 2618 alloy offers maximum high-temperature strength and fatigue resistance, while the 4032 alloy is ideal for moderate-horsepower street applications. Order the style and size pistons designed for your vehicle and engine.

4.33 out of 5 stars ( 6 )

$713.62

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$748.14

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