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The S&S Cycle T143 Long Block Engine (Part Number: 310-0548A) is a high-performance engine designed for touring motorcycles, combining precision engineering with durable construction. Crafted with CNC-machined B3 cylinder heads featuring two-bolt exhaust flanges, this engine ensures optimal airflow and combustion efficiency. The inclusion of S&S 635 easy-start gear drive cams and 1.725:1 rocker arms providing a total lift of .674 inches enhances power delivery and throttle response, making it ideal for riders seeking robust performance. Made in the USA, the T143 engine is built with high-quality Super Stockâ„¢ T2 crankcases with reed breather valve and three-piece flywheels, which contribute to its durability and smooth operation. The engine also features a high-flow oil pump and cam cover, ensuring reliable lubrication and longevity under demanding riding conditions. Equipped with premium high-performance tappets, this engine is designed for maximum efficiency and power output. Installation is straightforward, as it
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