Cylinder Heads & Components

39 products

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

$346.99

Benefits & Features:- * Quality hex head, hardened stainless steel bolts with a SHOW polish and corrosion-resistant finish * Tensile strength rated @ 180,000 psi – Superior & Stronger than...

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$3,687.99

Features & Benefits:- * 585″ Lift. * Works with 3-1/2″ & 3-5/8″ Cylinders. * Intake ports are the same size as OEM so the HD manifold bolts on. * Works with OEM style flat top pistons. * F...

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$3,495.99

Features & Benefits:- * 585″ Lift. * Heads works with 3.5″ & 3-5/8″ cylinders. * Intake ports are the same size as OEM so the H-D manifold bolts on * Works with OEM style flat top pistons....

$936.99

Features & Benefits:- * Works well with cams up to .605″ lift. * High Performance conical single wire spring. * Includes Springs. * Includes Top Collars. * Includes Keepers. * Includes Botto...

AVV

$358.99

Note: Maximum Recommended Lift = .600″ * Beehive steel valve spring kit * Ultra pure chrome silicon+Nickle spring wire * Extra processing for fatigue resistance * Resist pressure loss & fatigu...

COLONY MACHINE

$211.99

Benefits & Features:- * OEM Style Chrome Head Bolts & Washers. * Machined from High Strength Steel. * Hardened to Original OEM Specifications to Prevent Stretching. * Bolts Feature Rolled ...

$4,488.99

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

$1,037.99

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...

AVV

$204.99

* Ideal for stock replacement * High temp resistant Knobs * Protrusion: 1.250in. * Thread Section: 0.500in. * Thread: M10 x 1.0mm * Sold as a pair. Tech Tips:- OEM Replacement MFR PART No: AV-JC...

AVV

$204.99

* Long protrusion – short thread * Shorter thread sections make installation easier with less drilling required than OE style * High temp resistant Knobs * 10 x 1.0mm thread * Sold as a pair Tech ...

AVV

$204.99

* Short protrusion – short thread * Shorter thread sections make installation easier with less drilling required than OE style * High temp resistant Knobs * 10 x 1.0mm thread * Sold as a pair Tech...

FEULING

$754.99

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 ...

FEULING

$586.99

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

$586.99

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...

$398.99

Features & Benefits:- * Sold as a Kit. Proudly Made in the USA by S&S Cycle ! MFR PART No: 93-3070 ROLLIES PART No: SS93-3070