Engine

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

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...

Features & Benefits:- * S&S Super Stock Cylinder Head. * Includes Lower SS90-4120 lower Rocker Gaskets * Includes Head bolt kit SS930-0027...

Features & Benefits:- * Sold as a Pack (4). * Replaces OEM # 16595-99A Proudly Made in the USA by S&S Cycle !

* Long protrusion - short thread * Shorter thread sections make installation easier with less drilling required than OE style * High temp resistant...

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 = .600" * Beehive steel valve spring kit * Use with OEM style AVV guide seals * Fits both Single & Triple groove...

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

* Designed for Harley-Davidson heads * Also fits Buell 2005up * Use with OEM style AV-V7MMOE Viton Guide Seal or * AVV-HV-7MM Viton Guide seal for ...

* Designed for Harley-Davidson heads * Also fits Buell 2005up * Use with OEM style AV-V7MMOE Viton Guide Seal or * AVV-HV-7MM Viton Guide seal for ...

* Designed for Harley-Davidson heads * Also fits Buell 2005up * Use with OEM style AV-V7MMOE Viton Guide Seal or * AVV-HV-7MM Viton Guide seal for ...

* Designed for Harley-Davidson heads * Also fits Buell 2005up * Use with OEM style AV-V7MMOE Viton Guide Seal or * AVV-HV-7MM Viton Guide seal for ...

Features & Benefits:- * Sold as a Pack (4). Tech Tips:- * In November of 2014, S&S switched to powder metal valve guides. * They take this...

Features & Benefits:- * Fits Twin Cam & Sportster Engines. * Top Hat Style Seal. * Replaces OEM # 18094-02 * Sold as a Pack (4). Proudly Ma...

* For use with "Double Spring" or BeeHive 2005-2017 Single .650" High lift Spring kit * Resists Higher temp than other viton seals * Use on TC, XL...

* Replaces OEM # 18094-02A * Sold as a pack of 4.

PRODUCT DETAILS : * The strongest bolts available! * Top engine builders demand quality fasteners! Secure your engine with complete confidence * S...

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...

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

Kit Includes: * A Full Set of KPMI Stainless Steel Black Diamond Valves (Stock Head Diameter) * All KPMI Black Diamond Stainless steel valves are i...

Kit Includes: * A Full Set of KPMI Stainless Steel Black Diamond Valves (Stock Head Diameter) * All KPMI Black Diamond Stainless steel valves are i...

Kit Includes: * A Full Set of KPMI Stainless Steel Black Diamond Valves (Stock Head Diameter) * All KPMI Black Diamond Stainless steel valves are i...

Kit Includes: * A Full Set of KPMI Stainless Steel Black Diamond Valves (Stock Head Diameter) * All KPMI Black Diamond Stainless steel valves are i...

Cast Iron: After chemically separating several samples of cast iron material , analysis and evaluating the test data, we decided to have our own sp...

Cast Iron: After chemically separating several samples of cast iron material , analysis and evaluating the test data, we decided to have our own sp...

* Save time money when purchasing this kit * One package, everything you need for a cylinder head overhaul * Double your service life over OEM usin...

* Save time money when purchasing this kit * One package, everything you need for a cylinder head overhaul * Double your service life over OEM usin...

* Save time money when purchasing this kit * One package, everything you need for a cylinder head overhaul * Double your service life over OEM usin...

* Save time money when purchasing this kit * One package, everything you need for a cylinder head overhaul * Double your service life over OEM usin...

* Save time money when purchasing this kit * One package, everything you need for a cylinder head overhaul * Double your service life over OEM usin...

* KPMI Compression Release valves are state of the art and priced competitively * Designed to reduce "hot start" issues and starter / battery loads...

* Designed for Harley-Davidson heads * Use with OEM style valve seals * Cast Iron * High temp viton o-ring seal * Smooth lead-in * CNC machined * ...

* Designed for Harley-Davidson heads * Use with OEM style valve seals * Cast Iron * High temp viton o-ring seal * Smooth lead-in * CNC machined * ...

* Designed for Harley-Davidson heads * Use with OEM style valve seals * Cast Iron * High temp viton o-ring seal * Smooth lead-in * CNC machined * ...

* Ideal for stock replacement * High temp resistant Knobs * Protrusion: 1.250" * Thread Section: 0.500" * Thread: M10 x 1.0mm * Sold as a pair. Tec...

* Stock length & head diameter - 1000cc Ironhead Models * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Li...

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

* High Performance Oversize valve * Extreme Duty * High Flow * one piece forged racing grade stainless steel alloy. * Liquid nitriding process cre...

* Stock length & head diameter - 900 & 1000cc Ironhead Models * Extreme Duty * High Flow * one piece forged racing grade stainless steel al...

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

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

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

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

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

By taking advantage of the latest development in valve spring wire chemistry and manufacturing techniques, KPMI® has developed ovate wire Beehive s...

Since 1939, KPMI® has taken great pride in our ability to design innovative performance improvements for valvetrains. This innovative ability has n...

By taking advantage of the latest development in valve spring wire chemistry and manufacturing techniques, KPMI has developed ovate wire Beehive st...

Since 1939, KPMI® has taken great pride in our ability to design innovative performance improvements for valvetrains. This innovative ability has n...