S&S Cycle Engine MK136 550G CAM Oil Cooled BLK M8 Softail 2018-24 310-1295

S&S CYCLE MK136 Black Edition Engine

• 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

Race-Only: Factory equipped with a higher-lift 550G gear-drive cam. It is strictly for closed-course competition use.

Specifications

In the box

• 1 x S&S CYCLE MK136 Black Edition Engine (part number 310-1295)

Sold individually unless the title or specification states otherwise.

Fits 25 models

• HARLEY DAVIDSON FLDE 1750 ABS (2018-2020)
• HARLEY DAVIDSON FLFB 1750 ABS (2018-2020)
• HARLEY DAVIDSON FLFBS 1868 ABS (2018-2024)
• HARLEY DAVIDSON FLHC 1750 ABS (2018-2022)
• HARLEY DAVIDSON FLHCS 1868 ABS (2018-2024)
• HARLEY DAVIDSON FLI 1868 ABS (2024)
• HARLEY DAVIDSON FLSB 1750 ABS (2018-2024)
• HARLEY DAVIDSON FLSL 1750 ABS (2018-2021)
• HARLEY DAVIDSON FXBB 1750 ABS (2018-2020)
• HARLEY DAVIDSON FXBBS 1868 (2021)
• HARLEY DAVIDSON FXBBS 1868 ABS (2021-2024)
• HARLEY DAVIDSON FXBR 1750 ABS (2018-2020)
• HARLEY DAVIDSON FXBR 1923 ABS (2023-2024)
• HARLEY DAVIDSON FXBRS 1868 ABS (2018-2022)
• HARLEY DAVIDSON FXDR 1868 ABS (2019)
• HARLEY DAVIDSON FXDRS 1868 ABS (2020)
• HARLEY DAVIDSON FXFB 1750 ABS (2018-2019, 2021)
• HARLEY DAVIDSON FXFBS 1868 ABS (2018-2023)
• HARLEY DAVIDSON FXLR 1750 ABS (2018-2020)
• HARLEY DAVIDSON FXLRS 1868 ABS (2020-2021)
• HARLEY DAVIDSON FXLRS 1923 ABS (2022-2024)
• HARLEY DAVIDSON FXLRST 1923 ABS (2022-2024)
• HARLEY DAVIDSON FXRST 1923 ABS (2022)
• HARLEY DAVIDSON FXST 1750 (2021)
• HARLEY DAVIDSON FXST 1750 ABS (2020-2024)

Years shown are per model. If your bike is not listed, contact us with the year, make and model and we'll confirm before you buy.