Description
S&S Cycle 310-1289 Engine MK136 Black Edition Engine With 550G Cam for Oil-Cooled 2017-2023 M8 Touring
- Cylinder Heads:
- High-flow cylinder heads with premium seats, guides, valves, springs, and seals
- +1.00 mm (EU 1,00 mm) oversized intake and exhaust valves
- Valves are 0.030″(EU 0,030″) longer than stock for improved valvetrain geometry
- 0.605″(EU 0,605″) max lift valve spring
- 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, premium tappets and tappet cuffs, billet aluminum covers, sprocket shaft spacer, Champion spark plugs and cam cover badge
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