{"product_id":"s-s-cycle-top-end-kit-3-4375-inch-bore-for-74-inch-big-twin-engines-66-84-part-number-90-0097","title":"S\u0026S Cycle Top End Kit - 3.4375-inch Bore for 74-inch Big Twin Engines (66-84) - Part Number 90-0097","description":"\u003cp\u003eTop End Kit - 3.4375\" Bore - 74\" Big Twin '66-'84\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your Harley-Davidson Big Twin with the S\u0026amp;S Cycle Top End Kit, designed for 74-inch engines from 1966 to 1984. This comprehensive kit includes S\u0026amp;S Shovelhead-style cylinder heads, providing reliable performance and classic styling. The set features stock bore cylinders, measuring 3-7\/16 inches for 74-inch engines, ensuring a perfect fit for your vintage motorcycle. Forged pistons with an 8:1 compression ratio come pre-fitted to the cylinders, eliminating the need for machine work and minimizing installation downtime. The pistons include rings and wrist pins for easy assembly, and all necessary hardware, gaskets, manifold clamps, and seals are included for a complete installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIncludes set of S\u0026amp;S Shovelhead-style cylinder heads for authentic performance and appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStock bore cylinders measuring 3-7\/16 inches, optimized for 74-inch engines\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eForged pistons with 8:1 compression ratio, pre-fitted to the cylinders for easy installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComplete hardware, gaskets, manifold clamps, and seals included for a comprehensive upgrade\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA, ensuring quality and durability\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883652161729,"sku":"0903-1269","price":3659.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/12461.png?v=1767397085","url":"https:\/\/teamdreamrides.com\/products\/s-s-cycle-top-end-kit-3-4375-inch-bore-for-74-inch-big-twin-engines-66-84-part-number-90-0097","provider":"Team Dream Rides","version":"1.0","type":"link"}