Cylinder Heads & Parts - Evo

14 products

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

$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...

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...

$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

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

$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...

COLONY MACHINE

$259.99

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 ! MFR...

Sold Out

$206.99

Features & Benefits:- * Fits Big Twins 1984up & Sportster 19862003. * Magnetic Covers. * Fits S&S Head Bolts Only. * Sold as a Pack (4). Proudly Made in the USA by S&S Cycle ! M...

$215.99

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...

$3,447.99

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...

$3,267.99

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....

$919.99

Features & Benefits:- * Fits Twin Cam with S&S Heads. * Fits Evo 4″ & 4-1/8″ Bore Engines with S&S Heads. * Must be used in conjunction with S&S Rocker Covers. Proudly Made in ...