Cylinder Heads & Components

40 products

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

$796.99

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...

$760.99

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

$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

$613.99

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

$452.99

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

$452.99

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...

$310.99

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

AVV

$296.99

Note: Maximum Recommended Lift = .650″ * Beehive steel valve spring kit * Use with AV-V7MMB guide seals * Fits both Single & Triple groove valves * Ultra pure chrome silicon+Nickle spring wire...

AVV

$292.99

Note: Maximum Recommended Lift = .600″ * Beehive steel valve spring kit * Use with OEM style AVV guide seals * Fits both Single & Triple groove valves * Ultra pure chrome silicon+Nickle spring...

FEULING

$287.99

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...

$3,974.99

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 ...

$4,189.99

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...

$4,191.99

Features & Benefits:- * Accepts S&S or OEM Pistons. * Accepts up to 640 Lift Cams with S&S Pistons or 585 Lift with OEM Pistons. * 1.940″ Intake Valves & 1.575″ Exhaust Valves. * I...