S&S Cycle Engines

Features Stock deck height Large volume sump Machined, close-fitting oil scraper (stock is as cast) A solid foundation for building a big-bore eng...

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 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 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 Includes crankcase bolts, washers and nuts, cylinder mounting studs, timing hole plug, magnetic drain plug, assorted breather and oil lin...

Features For '70-'84 custom chassis with alternator-style primary Natural crankcases and stock-looking silver powder-coated cylinders Has correct ...

Features Stock-height basic engine is direct bolt in replacement for aging 80" H-D Evolution engines Specially machined cylinder heads allow use o...

Features Complete assembled 50 state legal engine for '84-'98 carbureted non-catalyst Big Twins or '70-'99 custom chassis with alternator-style pr...

Features High compression Special head machining fits stock length intake manifolds (S&S manifold size 410) Revised oil routing on '99-'06 Tou...

Features Super Stock™ heads and crankcase Easy start 585 gear drive cams with redesigned cam cover TC3 oil pump and cam plate Made in the USA Not...

Features Super Stock™ heads and crankcase Easy start 585 gear drive cams with redesigned cam cover TC3 oil pump and cam plate Made in the USA Not...

Features High compression Special head machining fits stock length intake manifolds (S&S manifold size 410) Revised oil routing on '99-'06 Tou...

Features Fits '84-'99 Harley-Davidson® big twin chassis and custom frames designed for Evolution® big twin engines +30% increase in HP and torque ...

Features For non-balanced Twin Cam models Converts a stock engine to 124" using the stock crankcases Include S&S Super Stock® 91 cc cylinder h...

Features Stock-height basic engine is direct bolt in replacement for aging 80" H-D Evolution engines Specially machined cylinder heads allow use o...

Features Fits '84-'99 Harley-Davidson® big twin chasis and custom frames designed for Evolution® big twin engines +30% increase in HP and torque o...

Features Fits '70-'99 custom chassis with alternator-style primary Includes Natural crankcase with black powder-coat cylinders, S&S Super Stoc...

Features Fits '84-'99 Harley-Davidson® big twin chassis and custom frames designed for Evolution® big twin engines +30% increase in HP and torque ...

Features Complete assembled 50 state legal engine for '84-'98 carbureted non-catalyst Big Twins or '70-'99 custom chassis with alternator-style pr...

Features Fits in a stock frame just like a stock engine with a little more punch with S&S Super E carburetor, S&S 508 camshaft, and high f...

Features Includes Super Stock™ heads, T2 crankcase, high flow oil pump, cam cover and easy start 585 gear drive cams Special head machining fits s...

Features For '84-'99 Evolution Big Twin or '70-'99 custom chasis with alternator-style primary Specially machined cylinder heads allow use of stoc...