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S&S CYCLE

S&S CYCLE 2017-2023 MK136 Black Edition Engine - 550G Gear Drive - Oil Cooled - Race Only - M8 Touring 310-1289

S&S CYCLE 2017-2023 MK136 Black Edition Engine - 550G Gear Drive - Oil Cooled - Race Only - M8 Touring 310-1289

$11,999.95 USD
$11,999.95 USD $11,999.95 USD
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  • 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
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Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
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