Cylinder Heads & Components

40 products

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

$200.99

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

FEULING

$814.99

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...

AVV

$661.99

* Extreme Duty Valve Spring Kit – Titanium Retainers – .675″ Lift * Specifically designed & processed with extra shot peening & nitrided to resist failure under the most extreme conditions...

AVV

$573.99

Features & Benefits * Works well with cams up to .615″ lift * High Performance conical single wire spring * Kit Includes: Springs, Top Collars, Keepers, Bottom Collare/Seals Tech Tips:- * Roc...

FEULING

$471.99

* The strongest studs available! * Top engine builders demand quality fasteners! Secure your engine with complete confidence * Superior in strength and performance to any other cylinder stud kit o...

$409.99

Features & Benefits:- * Includes white silicone cap. Proudly Made in the USA by S&S Cycle ! MFR PART No: 90-4914 ROLLIES PART No: SS90-4914

$429.99

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...

AVV

$366.99

Note: Maximum Recommended Lift = .650″ * Steel Double Spring Kit * Ultra pure chrome silicon+Nickle spring wire * Extra processing for fatigue resistance * 1.375″ for better clearance inside rocke...

AVV

$323.99

Note: Maximum Recommended Lift = .590″ * High Performance Spring Kit * Silicon & Vanadium alloy spring wire * Increased travel before coil bind * Complete Kit includes: springs, retainers, kee...

AVV

$323.99

Note: Maximum Recommended Lift = .530″ * High Performance Spring Kit * Silicon & Vanadium alloy spring wire * Increased travel before coil bind * Complete Kit includes: springs, retainers, kee...

AVV

$323.99

Note: Maximum Recommended Lift = .470″ * High Performance Spring Kit * Silicon & Vanadium alloy spring wire * Increased travel before coil bind * Complete Kit includes: springs, retainers, kee...

AVV

$296.99

Note: Maximum Recommended Lift = .650″ * Beehive steel valve spring kit * Ultra pure chrome silicon+Nickle spring wire * Extra processing for fatigue resistance * Resist pressure loss & fatigu...

AVV

$295.99

Note: Maximum Recommended Lift = .600″ * Steel Double Spring Kit * Ultra pure chrome silicon+Nickle spring wire * Extra processing for fatigue resistance * 1.375″ for better clearance inside rocke...

AVV

$292.99

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...

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...