Overview Product Description MK136 Engine 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 475G 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 Product Videos Custom Field Product Reviews Write a Review Write a Review × S&S Cycle S&S Cycle #310-1290 - MK136 Black Edition Engine - Oil Cooled - 49 State - M8 Touring Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *
S&S Cycle | sku: 0901-0264 S&S Cycle #310-1289 - MK136 Black Edition Engine - 550G Gear Drive - Oil Cooled - Race Only - M8 Touring MSRP: $11,999.95 Was: Now: $10,799.96 Add to Cart S&S Cycle | sku: 0932-0267 S&S Cycle #310-0959A - Oil Cooled Oil Pump - M8 MSRP: $615.95 Was: Now: $554.36 Add to Cart S&S Cycle | sku: 0932-0266 S&S Cycle #310-0947A - Water Cooled Oil Pump - M8 MSRP: $587.95 Was: Now: $529.16 Add to Cart S&S Cycle | sku: 0932-0251 S&S Cycle #310-0998B - Oil Pump with Cam Plate - Oil Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart Recommended S&S Cycle | sku: 0901-0264 S&S Cycle #310-1289 - MK136 Black Edition Engine - 550G Gear Drive - Oil Cooled - Race Only - M8 Touring MSRP: $11,999.95 Was: Now: $10,799.96 Add to Cart S&S Cycle | sku: 0932-0267 S&S Cycle #310-0959A - Oil Cooled Oil Pump - M8 MSRP: $615.95 Was: Now: $554.36 Add to Cart S&S Cycle | sku: 0932-0266 S&S Cycle #310-0947A - Water Cooled Oil Pump - M8 MSRP: $587.95 Was: Now: $529.16 Add to Cart S&S Cycle | sku: 0932-0251 S&S Cycle #310-0998B - Oil Pump with Cam Plate - Oil Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart × OK
S&S Cycle | sku: 0932-0267 S&S Cycle #310-0959A - Oil Cooled Oil Pump - M8 MSRP: $615.95 Was: Now: $554.36 Add to Cart S&S Cycle | sku: 0932-0266 S&S Cycle #310-0947A - Water Cooled Oil Pump - M8 MSRP: $587.95 Was: Now: $529.16 Add to Cart S&S Cycle | sku: 0932-0251 S&S Cycle #310-0998B - Oil Pump with Cam Plate - Oil Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart Recommended S&S Cycle | sku: 0901-0264 S&S Cycle #310-1289 - MK136 Black Edition Engine - 550G Gear Drive - Oil Cooled - Race Only - M8 Touring MSRP: $11,999.95 Was: Now: $10,799.96 Add to Cart S&S Cycle | sku: 0932-0267 S&S Cycle #310-0959A - Oil Cooled Oil Pump - M8 MSRP: $615.95 Was: Now: $554.36 Add to Cart S&S Cycle | sku: 0932-0266 S&S Cycle #310-0947A - Water Cooled Oil Pump - M8 MSRP: $587.95 Was: Now: $529.16 Add to Cart S&S Cycle | sku: 0932-0251 S&S Cycle #310-0998B - Oil Pump with Cam Plate - Oil Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart
S&S Cycle | sku: 0932-0266 S&S Cycle #310-0947A - Water Cooled Oil Pump - M8 MSRP: $587.95 Was: Now: $529.16 Add to Cart S&S Cycle | sku: 0932-0251 S&S Cycle #310-0998B - Oil Pump with Cam Plate - Oil Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart
S&S Cycle | sku: 0932-0251 S&S Cycle #310-0998B - Oil Pump with Cam Plate - Oil Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart
S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart
S&S Cycle | sku: 0901-0264 S&S Cycle #310-1289 - MK136 Black Edition Engine - 550G Gear Drive - Oil Cooled - Race Only - M8 Touring MSRP: $11,999.95 Was: Now: $10,799.96 Add to Cart S&S Cycle | sku: 0932-0267 S&S Cycle #310-0959A - Oil Cooled Oil Pump - M8 MSRP: $615.95 Was: Now: $554.36 Add to Cart S&S Cycle | sku: 0932-0266 S&S Cycle #310-0947A - Water Cooled Oil Pump - M8 MSRP: $587.95 Was: Now: $529.16 Add to Cart S&S Cycle | sku: 0932-0251 S&S Cycle #310-0998B - Oil Pump with Cam Plate - Oil Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart
S&S Cycle | sku: 0932-0267 S&S Cycle #310-0959A - Oil Cooled Oil Pump - M8 MSRP: $615.95 Was: Now: $554.36 Add to Cart S&S Cycle | sku: 0932-0266 S&S Cycle #310-0947A - Water Cooled Oil Pump - M8 MSRP: $587.95 Was: Now: $529.16 Add to Cart S&S Cycle | sku: 0932-0251 S&S Cycle #310-0998B - Oil Pump with Cam Plate - Oil Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart
S&S Cycle | sku: 0932-0266 S&S Cycle #310-0947A - Water Cooled Oil Pump - M8 MSRP: $587.95 Was: Now: $529.16 Add to Cart S&S Cycle | sku: 0932-0251 S&S Cycle #310-0998B - Oil Pump with Cam Plate - Oil Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart
S&S Cycle | sku: 0932-0251 S&S Cycle #310-0998B - Oil Pump with Cam Plate - Oil Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart
S&S Cycle | sku: 0932-0250 S&S Cycle #310-0997B - Oil Pump with Cam Plate - Twin Cooled™ Engines - M8 MSRP: $836.95 Was: Now: $753.26 Add to Cart