Massive 136 cubic inch complete crate engine built on premium MKB-Series crankcases
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 springs
High-strength alloy used in cylinder head casting, and provides improved strength at high temperatures
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
MK136B:
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
Made in the USA