S&S Cycle Evolution

Features Rollers have a larger-than-stock inner bearing race that reduces stress and increases axle life Each lifter body and plunger assembly is ...

Features Head gaskets are made from aramid fiber-reinforced premium graphite material with a steel core, stainless steel fire ring and anti-stick ...

Features Head gaskets are made from aramid fiber-reinforced premium graphite material with a steel core, stainless steel fire ring and anti-stick ...

Features Come with a map sensor port and match OEM intake ports Made in the USA Note: Fits a '84-'99 Evolution Big Twin (80") that requires a ma...

Features Cylinder and piston kits contain S&S 3-1/2" bore (80") cylinders and forged pistons, rings, wrist pins, and head and base gaskets The...

Features High quality replacement cylinder studs provide increased strength and extended durability Meet or exceed OE standards Made in the USA N...

Features Contain the best quality gaskets available Made in the U.S.A. Specs Product Name Gasket Kit Type Lower End Units Kit Riding Sty...

Features 0.4375" diameter chromoly steel for maximum strength Made in the USA Notes Rocker boxes must be removed for installation or removal. Co...

Features Includes set of head and base gaskets, exhaust gaskets and O-rings Layered steel head gaskets Made in the U.S.A. Notes Kit does not inc...

Features Contains the best quality gaskets Made in the USA Notes Top-end gasket kit do not include rocker box gaskets; must be purchased separat...

Features Contains the best quality gaskets Made in the USA Notes Top-end gasket kit do not include rocker box gaskets; must be purchased separat...

Features Contains the best quality gaskets Made in the USA Notes Top-end gasket kit do not include rocker box gaskets; must be purchased separat...

Features Kit includes a carburetor with updated fuel delivery pots and idle screws, teardrop air cleaner assembly, mounting hardware, fuel line, c...

Features Kit includes a carburetor with updated fuel delivery pots and idle screws, teardrop air cleaner assembly, mounting hardware, fuel line, c...

Features Carb kit includes a carburetor with updated fuel delivery pots and idle screws, teardrop air cleaner assembly, manifold, mounting hardwar...

Features 3.5" stock bore cylinder case for any stroke up to and including 5" and most stock length connecting rods Machined to accept an oil filte...

Features 3.625" big bore cylinder case for any stroke up to and including 5" and most stock length connecting rods Machined to accept an oil filte...

Features High-quality, heavy duty rod sets come complete and ready to install Set includes front and rear rods, crankpin and nuts, steel cages and...

Features 3.5" stock bore cylinder case for any stroke up to and including 5" and most stock length connecting rods Machined to accept an oil filte...

Features Replacement gasket kit for rocker box part number 90-4095 Specs Product Name Gasket Kit Type Rocker Box Units Kit Riding Style ...

Features Positive O-ring seal ensures leak-free operation Includes rocker boxes, gaskets and mounting bolts Rocker arm supports included Made in t...

Features Includes all required gaskets and O-rings for both rocker boxes Note: For S&S Box only. Specs Product Name Gasket Kit Type Ro...

Features New-style breather is not dependent on the rotation of the crankshaft to make it open and close. Instead, reeds open when pressure in the...

Features New-style breather is not dependent on the rotation of the crankshaft to make it open and close. Instead, reeds open when pressure in the...