40005-57B Primary Chain

When it comes to primary drive reliability, Tsubaki is a name that mechanics trust. This primary chain is designed to fit a wide range of Harley-Davidson and Buell models, including Sportsters, tube frame models, XB models, and various RS and single-cylinder applications. It serves as a high-quality replacement for OEM 40005-57B. Tsubaki chains are engineered to handle the high torque and power of modern engines, featuring an endless design with oval links that mirror the original equipment. This chain is built to provide tens of thousands of miles of trouble-free service, ensuring your primary drive remains quiet and efficient. Whether you are performing routine maintenance or a full engine overhaul, this Tsubaki primary chain offers the durability and value needed for a professional-grade repair.