Cylinder Heads
- 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
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
- Powder coat finish matches factory finish
- Huge displacement increase means a huge power increase
DISCLAIMER:
DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE *Qualified Manufacturer Declared 49-State Federal Emissions Compliant Engine in MY 2017-2020 touring models
