S&S Cycle MK136 Black Edition Engine With 475 G Cam For Harley

This is everything you need to have the largest, most powerful, and most reliable crate engine on the market today. Introducing the next generation of Proven Performance for your 2017 & newer H-D Touring Models, the MK136 Engine. This is the newest version of the complete crate engines S&S is known for, ready to install in your M8 Touring bike. We took our MK-Series Crankcases, married them to the 136” cylinders and flywheels, and then fit High-flow cylinder heads with +1mm Valves and .605" springs. Huge displacement increase means a huge power increase!

Features:

High-flow cylinder heads with premium seats, guides, valves, springs, and seals
+1mm oversized intake and exhaust valves
Valves are .030" 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
Patented Dual-Spray Piston Cooling Jets
O-ring sealing between case and cam support plate
Precision machined oil scraper
Enlarged oil sump
Contoured crankcase floor allows oil to easily drain back to the sump
Forged pistons
S&S performance oil pump and cam support plate
Premium tappets and tappet cuffs
Billet aluminum covers
Sprocket shaft spacer included
Retains stock engine height
Powder coat finish matches factory finish
49 State Emissions Compliant