S&S CYCLE MK136 Black Edition Engine with 550G Cam — 136", black powder coat – 17-23 Touring, 22 CVO, 17-23 Trike

MK136 Black Edition Engine with 550G Cam

Elevate your ride with the MK136 Black Edition, engineered for race-ready performance and reliable street use. 🔧⚙️

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, performance oil pump and cam support plate, premium tappets and tappet cuffs, billet aluminum covers, sprocket shaft spacer, Champion spark plugs and cam cover badge
• Made in the USA

This Black Edition combines durable race-proven components with finished hardware for a turnkey high-performance engine that fits like stock.