S&S Cycle Engines

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

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

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 Replacement Twin Cam "A" engine cases for stock H-D chassis only (carb and EFI) Features greater overall strength than stock crankcases S...

Features Include crankcase bolts, washers and nuts, cylinder mounting studs, timing hole plug, magnetic drain plug, assorted breather and oil line...

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 Twin Cam "A" engine cases for stock H-D chassis only (carb and EFI) Features greater overall strength than stock crankcases S...

Features 4.125" bore crankcase can be used as a foundation for a custom engine or replacement for T111, T124, or T143 Stock looking, but stronger;...

Features 4.125" bore crankcase can be used as a foundation for a custom engine or replacement for T111, T124, or T143 Stock looking, but stronger;...

Features Designed for high performance engines with cylinder bores 4.000" Cam chest is moved outward 0.250" to allow crankcases to handle large cy...

Features Replacement Twin Cam "A" engine cases for stock H-D chassis only (carb and EFI) Features greater overall strength than stock crankcases S...

Features Replacement Twin Cam "A" engine cases for stock H-D chassis only (carb and EFI) Features greater overall strength than stock crankcases S...

Features High compression Oil line installation kit required No fuel system or ignition systems included Special head machining fits stock length ...

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 Stock deck height Large volume sump Fits stock touring frame Designed to accept larger bores Accepts all OEM style components Reinforced ...

Features Cylinder Heads: High-flow cylinder heads with premium seats, guides, valves, springs, and seals +1.00 mm oversized intake and exhaust val...

Features High compression Oil line installation kit required No fuel system or ignition systems included Special head machining fits stock length ...

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 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 S&S B3 cylinder heads CNC-machined with two-bolt exhaust flanges S&S 635 easy-start gear drive cams and 1.725:1 rocker arms for ....

Features High compression Oil line installation kit required No fuel system or ignition systems included Special head machining fits stock length ...

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 S&S B3 cylinder heads CNC-machined with two-bolt exhaust flanges S&S 635 easy-start gear drive cams and 1.725:1 rocker arms for ....