MK136 Black Edition Engine - 550G Gear Drive - Oil Cooled - Race Only - M8 Touring
Cylinder Heads:
High-flow cylinder heads with premium seats, guides, valves, springs, and seals
+1.00 mm oversized intake and exhaust valves
Valves are 0.030" longer than stock for improved valvetrain geometry
0.605" max lift valve spring
550G gear drive cam
Enlarged cooling passage around the exhaust seats
S&S exclusive breather boxes
Crankcase:
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:
Retains stock engine height
Includes forged pistons, S&S performance oil pump and cam support plate, premiun tappets and tappet cuffs, billet aluminum covers, sprocket shaft spacer, Champion spark plugs and cam cover badge
Made in the USA