Cylinder Heads & Components

* Extreme Duty Valve Spring Kit - Titanium Retainers - .675" Lift * Specifically designed & processed with extra shot peening & nitrided to...

FEULING Endurance BeeHive valve springs are machined from a premium grade Hi-tensile chrome silicon single conical ovate wire, shot-peened with a s...

Note: Maximum Recommended Lift = .650" * Beehive steel valve spring kit * Ultra pure chrome silicon+Nickle spring wire * Extra processing for fatig...

Note: Maximum Recommended Lift = .650" * Steel Double Spring Kit * Ultra pure chrome silicon+Nickle spring wire * Extra processing for fatigue resi...

Note: Maximum Recommended Lift = .600" * Steel Double Spring Kit * Ultra pure chrome silicon+Nickle spring wire * Extra processing for fatigue resi...

Note: Maximum Recommended Lift = .600" * Beehive steel valve spring kit * Ultra pure chrome silicon+Nickle spring wire * Extra processing for fatig...

FEULING ECONO performance BEEHIVE valve springs designed to handle up to 585 lift camshafts at an economical price. These FEULING BEEHIVE springs a...

Note: Maximum Recommended Lift = .590" * High Performance Spring Kit * Silicon & Vanadium alloy spring wire * Increased travel before coil bind...

Note: Maximum Recommended Lift = .530" * High Performance Spring Kit * Silicon & Vanadium alloy spring wire * Increased travel before coil bind...

Note: Maximum Recommended Lift = .470" * High Performance Spring Kit * Silicon & Vanadium alloy spring wire * Increased travel before coil bind...

* Easy oversize identification by the part number * Easy to machine with cutter and stone * Resists severe pounding and dissipates heat better *...

* Easy oversize identification by the part number * Easy to machine with cutter and stone * Resists severe pounding and dissipates heat better *...

* Sold as a pack of 8. * AV&V Valves Spring Kits ONLY.

* Stock length & head diameter * Triple Groove * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Black Nitri...

* High Flow * one piece forged racing grade stainless steel alloy. * Black Nitride process creates a valve that is smoother and stronger than O.E....

* High Flow * one piece forged racing grade stainless steel alloy. * Black Nitride process creates a valve that is smoother and stronger than O.E....

Features & Benefits:- * Replacement intake valve for S&S Super Stock heads. * Fits Big Twin 1984up, Sportster 1986-2003 & S&S X-Wed...

* Stock length & head diameter * Triple Groove * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Black Nitri...

* Stock length & head diameter * Triple Groove * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Black Nitri...

* Highest flow level on the market. * One piece forged racing grade stainless steel alloy. * Hard black nitride finish. * Bearing quality hardened...

* Stock length & head diameter * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Liquid nitriding process cr...

* Highest flow level on the market. * One piece forged racing grade stainless steel alloy. * hard black nitride finish. * bearing quality hardened...

* Stock length & head diameter * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Liquid nitriding process cr...

* Designed for Harley-Davidson heads * Same Guide fits Inlet & Exhaust * Use with OEM style valve seals * Manganese-Bronze * High temp viton o...

* Designed for Harley-Davidson heads * Same Guide fits Inlet & Exhaust * Use with OEM style valve seals * Manganese-Bronze * High temp viton o...

* Designed for Harley-Davidson Milwaukee-8 heads * Use with OEM style Viton Guide Seal * Manganese-Bronze * High temp viton o-ring seal * Smooth le...

* Designed for Harley-Davidson Milwaukee-8 heads * Use with OEM style Viton Guide Seal * Manganese-Bronze * High temp viton o-ring seal * Smooth le...

* Stock length & head diameter * Triple Groove * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Black Nitri...

* one piece forged racing grade stainless steel alloy. * Black Nitride process creates a valve that is smoother and stronger than O.E.M. * Stems ...

Features & Benefits:- * Replacement intake valve for S&S Super Stock Heads. * Fits Big Twin 1984up, Sportster 1986-2003 & S&S X-Wed...

Features & Benefits:- * OEM Replacement. * Stock length & head diameter * Triple Groove * Extreme Duty * High Flow * one piece forged racin...

* Stock length & head diameter * Triple Groove * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Black Nitri...

* Stock length & head diameter * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Liquid nitriding process cr...

* Highest flow level on the market. * One piece forged racing grade stainless steel alloy. * hard black nitride finish. * bearing quality hardened...

* Highest flow level on the market. * One piece forged racing grade stainless steel alloy. * hard black nitride finish. * bearing quality hardened...

* Stock length & head diameter * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Liquid nitriding process cr...

Tech Tips: Use with Twin Cam O.E. Style umbrella seals (2005-17) Thickness .022" OD= 1.441" ID= 1.010" Sold as a pack of 20 This Valve Spring Shi...

Tech Tips: Thickness .015" OD= 1.480" ID= .600" Sold as a pack of 20 This Valve Spring Shim allows the engine builder to adjust spring pressure b...

* Inside Diameter = 8.5mm. For use with OEM 6mm Valve stem. * Resists Higher temp than other viton seals * Replaces OEM # 18687-01K * Sold as a pac...

* Resists Higher temp than other Viton seals * Use on Evo & TC'84-04, XL & Buell'86-04 * Use with AV-VG5600 / 5700 Series .530" valve guid...

* Resists higher temp than other viton seals * Use on Evo & TC'84-04, XL & Buell'86-04 * Use with AV-VG5600/VG5700 series valve guides * R...

* Inside Diameter = .421". * Resists higher temp than other viton seals * Use on Evo & TC'84-04, XL & Buell'86-04 * Use with AV-VG5600S/VG...

* Inside Diameter = .420 * Resists higher temp than other viton seals * Use on Evo & TC'84-04, XL & Buell'86-04 * Use with AV-VG5600S/VG57...

Features & Benefits:- * Fits Shovelhead Engines. * Fits Intake & Exhaust. * Press-on Style Viton Seals. * Reduces Oil Consumption. * Replac...

* OEM Style, Inside Diameter = .625" * Use with AV-VG5400 series valve guides * Requires tool AV-VSD-W * Sold as a pack of 4.

Features & Benefits:- * Fits Panhead & Shovelhead Engines. * Fits Intake & Exhaust. * Press-on Style Viton Seals. * Reduces Oil Consump...

* OEM Style, Inside Diameter = .562" * Use on BT'48-79 * Use with AV-VG5300 series valve guides * Requires tool AV-VSD-B * Sold as a pack of 4.

Features & Benefits:- * Includes white silicone cap. Proudly Made in the USA by S&S Cycle !