Cylinder Heads & Components

25 products

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

$356.99

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...

$3,761.99

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...

$3,565.99

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....

$956.99

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...

COLONY MACHINE

$216.99

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

$4,832.99

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

$1,069.99

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

$777.99

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

$603.99

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

$603.99

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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$405.99

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

FEULING

$379.99

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...

$4,337.99

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 ...

$4,573.99

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...

FEULING

$1,033.99

Features & Benefits:- STAINLESS 12 POINT HEAD BOLTS UHL 3.215, QTY. 8 * Kit includes 8 head bolts, moly assembly lubricant and thread sealant * The strongest studs & bolts available! * Top...