S&S Cycle V124 Long Block Engine For Harley The S&S V124 Long Block engine upgrade is designed for Evo owners seeking unparalleled performance and reliability. It offers increased power and efficiency, making it a top choice for those who demand superior engine performance. Featuring head-style case breathing, it enhances airflow, efficiency, and power delivery for a smoother and more responsive ride. Crafted with high-quality components, the V124 Long Block is durable and easily integrates with existing performance carburetors and aftermarket ignition systems, facilitating an easy and cost-effective installation process. This upgrade is an ideal way to boost your bike's performance effortlessly. Features: Reuse your existing performance carburetor and aftermarket ignition EFI compatible, calibration required through use of aftermarket module or add on tuner Shorter than stock height engine eliminates any clearance problems S&S performance heads, including forged rocker arms, high lift valve springs Exclusive oil jets to cool bottom of the pistons S&S Cycle Hvhp oil pump 2 Year Limited Warranty Made in the USA Specs: Displacement: 124 Bore: 4-1/8 Stroke: 4-1/8 Compression Ratio: 10.8:1 Pistons: S&S Forged Camshaft: S&S 640 Note: S&S engines are shipped without oil. This engine will require a performance ignition and performance carburetor.