Complete 136" S&S crate engine with 550G power cam. Ready to install in your oil cooled M8 Softail. Comes with high-flow cylinder heads with premium seats; guides; valves; springs and seals. High-strength alloy used in cylinder head casting for improved strength at high temperatures and enlarged cooling passage around the exhaust seats. The crankcase is built with all premium quality components. Everything you need to have the largest; most powerful & reliable crate engine on the market today.- Ready to run crate engine - Capacity 136" / 2222cc - 4.320" bore x 4.625" (4-5/8") stroke - 550G lift cam with gear drive - .605" max lift valve springs - +1mm oversized intake and exhaust valves - +.030" longer valves for improved valve train geometry - Forged pistons - High Flow cylinder heads - S&S exclusive breather boxes - Patented Dual-Spray piston cooling jets - Precision machined oil scraper - Enlarged oil sump - Contoured floor allows oil to easily drain back to the sump - S&S performance oil pump and cam support plate - Premium tappets and tappet cuffs - Billet aluminum covers - Sprocket shaft spacer included - Champion spark plugs - Stock engine height for easy install - Includes 136" cam cover badge - Powder coated finish to match factory finish - Huge displacement increase = huge power increase. Note: Not compatible with stock ECU/ECM