S&S Cycle MK136 Black Edition Engines

S&S Cycle offers MK136 Black Edition engines for a variety of Harley-Davidson© oil-cooled Touring street bikes from 2017 and up. Details include:

CYLINDER HEADS:
* High-flow cylinder heads with premium seats, guides, valves, springs, and seals
* +1mm oversized intake and exhaust valves
* Valves are .030 in. longer than stock for improved valvetrain geometry
* .605" max lift valve springs
* High-strength alloy used in cylinder head casting, improved strength at high temperatures
* Enlarged cooling passage around the exhaust seats
* S&S Exclusive breather boxes

CRANKCASE:
* All premium quality components
* Patented dual-spray piston cooling jets
* Precision-machined oil scraper
* Enlarged oil sump
* Contoured floor allows oil to easily drain back to the sump

MK136:
* Forged pistons
* S&S performance oil pump and cam support plate
* Premium tappets and tappet cuffs
* Billet aluminum covers
* Sprocket shaft spacer included
* Champion spark plugs
* Retains stock engine height
* Includes cam cover badge
* Powdercoat finish matches factory finish
* Huge displacement increase means a huge power increase
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