Cylinder Heads & Components

62 products

Shop the range of aftermarket motorcycle engine products at Pro Class Custom Parts.

$4,447.99

These S&S® Super Stock® cylinder heads for 1984-’99 HD® Evolution® Big Twin engines feature a specially shaped combustion chamber and require special pistons that must be purchased separately....

FEULING

$945.99

FEULING ENDURANCE BEEHIVE valve springs are a direct bolt in replacement, no spring seat or rocker cover machining required. Endurance springs are machined from a premium grade Hi-tensile chrome s...

FEULING

$688.99

PRODUCT DETAILS : * The strongest bolts available! * Top engine builders demand quality fasteners! Secure your engine with complete confidence * Superior in strength and performance to any other ...

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FEULING

$577.99

FEULING Endurance BeeHive valve springs are machined from a premium grade Hi-tensile chrome silicon single conical ovate wire, shot-peened with a specially processed thermal heat treat and super N...

FEULING

$577.99

FEULING Endurance BeeHive valve springs are machined from a premium grade Hi-tensile chrome silicon single conical ovate wire, shot-peened with a specially processed thermal heat treat and super N...

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$374.99

Features & Benefits:- * Sold as a Kit. Proudly Made in the USA by S&S Cycle !

FEULING

$362.99

FEULING ECONO performance BEEHIVE valve springs designed to handle up to 585 lift camshafts at an economical price. These FEULING BEEHIVE springs are made from the same premium stress relieved con...

$4,118.99

Features & Benefits:- * S&S Super Stock Cylinder Head. * Includes Lower SS90-4120 lower Rocker Gaskets * Includes Head bolt kit SS930-0027, replaces the short H-D head bolts . * Includes ...

$4,337.99

Features & Benefits:- * Accepts S&S or OEM pistons. * Accepts up to 640 lift cams with S&S pistons or if using with stock pistons valve reliefs must be machined in the pistons due to l...

$473.99

Features & Benefits:- * Includes white silicone cap. Proudly Made in the USA by S&S Cycle !

$553.99

Features & Benefits:- * Heat Treated 8640 Steel. * 200,000 psi Ultimate Tensile Strength. * 14% increases in strength over stock. * Stronger material than stock Head bolts. * Durable Black Oxi...

FEULING

$362.99

FEULING ECONO performance BEEHIVE valve springs designed to handle up to 585 lift camshafts at an economical price. These FEULING BEEHIVE springs are made from the same premium stress relieved con...

COLONY MACHINE

$316.99

Features & Benefits:- * Custom Look. * Polished & Chrome Plated, 12 Point Dome Top Headbolts. * Replaces OEM 16480-85A & OEM 16478-85A Proudly Made in the USA by Colony Machine !

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$237.99

Features & Benefits:- * Fits Big Twins 1984up & Sportster 1986–2003. * Magnetic Covers. * Fits S&S Head Bolts Only. * Sold as a Pack (4). Proudly Made in the USA by S&S Cycle !

$214.99

Features & Benefits:- * Replacement intake valve for S&S Super Stock Heads. * Fits Big Twin 1984up, Sportster 1986-2003 & S&S X-Wedge. * 1.605″ x 4.428″ @ 1.509″ Gauge. * Sold Eac...