Categories
Best sellers
$899.00 USD
$899.00 USD
$1,199.00 USD
Sidebar
Ask a Question
S&S Cycle MK136 Black Edition Engine for M8 Touring – 49 State Oil Cooled Performance Upgrade
Regular price $11,999.95 USD
MK136 Black Edition Engine - Oil Cooled - 49 State - M8 Touring Upgrade your Harley-Davidson M8 Touring with the S&S Cycle...
Lease for as low as $/week
QUESTIONS & ANSWERS
Have a Question?
Be the first to ask a question about this.
Category:
MK136 Black Edition Engine - Oil Cooled - 49 State - M8 Touring
Upgrade your Harley-Davidson M8 Touring with the S&S Cycle MK136 Black Edition Engine, part number 310-1290, designed for optimal performance and durability. This oil-cooled engine features high-flow cylinder heads with premium seats, guides, valves, springs, and seals, delivering enhanced airflow and power. The intake and exhaust valves are +1.00 mm oversized, and the valves are 0.030 inches longer than stock to improve valvetrain geometry for smoother operation and increased efficiency. Equipped with a 0.605-inch maximum lift valve spring and a 475G gear drive cam, this engine offers robust performance and reliable timing. The cooling system includes enlarged passageways around the exhaust seats and exclusive breather boxes from S&S, ensuring efficient heat dissipation during high-performance riding. The cylinder head design is complemented by patented dual-spray piston cooling jets and a precision-machined oil scraper, which help maintain optimal operating temperatures and reduce wear. The enlarged oil sump with a contoured floor facilitates efficient oil drainage back to the sump, promoting consistent lubrication. The MK136 package retains stock engine height for easy installation and includes forged pistons, a high-performance oil pump, and cam support plate, along with premium tappets and tappet cuffs. Billet aluminum covers, a sprocket shaft spacer, Champion spark plugs, and a cam cover badge complete the package, providing a premium finish and enhanced durability. This engine is built for riders seeking improved power, reliability, and a sleek black finish, making it a perfect upgrade for your touring motorcycle. Engineered by S&S Cycle, renowned for quality and performance, the MK136 Black Edition is designed to deliver maximum performance on 49 state compliant models, ensuring your bike runs smoothly and efficiently for miles to come.
Features:
- High-flow cylinder heads with premium seats, guides, valves, springs, and seals for increased airflow and power
- Oversized intake and exhaust valves (+1.00 mm) with longer valve stems for improved valvetrain geometry
- Maximum valve spring lift of 0.605 inches for high-performance valve operation
- Includes a 475G gear drive cam designed for robust power delivery
- Enlarged cooling passages around exhaust seats for efficient heat dissipation
- Exclusive S&S breather boxes for enhanced crankcase ventilation
- Patented dual-spray piston cooling jets for thermal management
- Precision-machined oil scraper and enlarged oil sump for optimal lubrication
- Contoured oil sump floor for efficient oil drainage back to the sump
- Retains stock engine height for straightforward installation
- Includes forged pistons, S&S performance oil pump, cam support plate, premium tappets, and tappet cuffs
- s billet aluminum covers, sprocket shaft spacer, Champion spark plugs, and cam cover badge for durability and aesthetics
Related Products
