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S&S Cycle MK136 Black Edition Engine With 475 G Cam For Harley

Elevate your M8 H-D Touring model with the MK136 Engine, marking the latest advancement in S&S's renowned line of complete crate engines. Engineered for unmatched power and reliability, the MK136 combines S&S MK-Series Crankcases with 136” cylinders and flywheels, enhanced by High-flow cylinder heads featuring +1mm Valves and .605" springs. This fusion not only amplifies displacement but significantly boosts power, setting a new benchmark in engine performance.

Features:

  • 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
  • Patented Dual-Spray Piston Cooling Jets
  • O-ring sealing between case and cam support plate
  • Precision machined oil scraper
  • Enlarged oil sump
  • Contoured crankcase floor allows oil to easily drain back to the sump
  • Forged pistons
  • S&S performance oil pump and cam support plate
  • Premium tappets and tappet cuffs
  • Billet aluminum covers
  • Sprocket shaft spacer included
  • Retains stock engine height
  • Powder coat finish matches factory finish
  • 49 State Emissions Compliant
Made in the USA
Product Style J&P Cycles Item # Catalog Number Store Sku MFR. Product # Availability
Product Style 475G Camshaft / Black Edition J&P Cycles Item #10415922 Catalog Number10415922 Store Sku MFR. Product #310-1290 AvailabilityIn Stock: Ships within 24 hours
Please review this product's fitment notes & exceptions prior to purchase: Add to Cart
This product is vehicle specific.
Select a vehicle to ensure fitment.
Fitment Notes & Exceptions
  • 49 State Emissions Compliant
  • Item not eligible for return. Engines ship using freight carriers and thereby require an extra 4-8 business days of lead time.
  • When purchasing a complete motorcycle Engine, they have an MSO (Manufacturer Statement of Origin). The MSO is required by most states for registration and/or insurance purposes. This MOS is sent after the part, directly to the purchaser. Up to date contact information is important to be sure the MSO can be processed properly.
This Product Fits
Harley Davidson
Electra Glide Standard FLHT 2019, 2020, 2021, 2022
Electra Glide Ultra Classic FLHTCU/I 2017, 2018, 2019
Freewheeler FLRT 2017-2025
Revival FLH 2021
Road Glide 3 FLTRT 2023, 2024, 2025
Road Glide CVO/SE FLTRXSE 2018, 2019, 2020, 2021, 2022
Road Glide FLTRX 2017-2023
Road Glide Special FLTRXS 2017-2023
Road Glide ST FLTRXST 2022, 2023
Road King FLHR/I 2017-2022
Road King Special FLHRXS 2017-2025
Street Glide CVO/SE FLHXSE 2018, 2019, 2020, 2021, 2022
Street Glide FLHX/I 2017-2023
Street Glide Special FLHXS 2017-2023
Street Glide ST FLHXST 2022, 2023
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