{"product_id":"sifton-valve-spring-kit-for-harley-davidson-xl-1957-1966-part-15-0063","title":"Sifton Valve Spring Kit For Harley Davidson XL 1957-1966 Part 15-0063","description":"\u003cdiv\u003e\n\u003ch1\u003eSifton Valve Spring Kit For Harley Davidson XL 1957-1966 Part 15-0063\u003c\/h1\u003e\n\u003cp\u003eThe Sifton Valve Spring Kit (Part 15-0063) provides a complete valve train upgrade for Harley Davidson XL engines from 1957 through 1966. It includes all springs, collars, and keepers required for a full valve assembly overhaul, replacing worn components and restoring precise valve operation.\u003c\/p\u003e\n\u003cp\u003eMade in the USA with high-quality materials, this complete kit supports reliable valve timing and smooth engine operation in vintage restorations or performance tuning projects. When installed correctly, the kit helps improve engine responsiveness and longevity by ensuring consistent spring pressure and proper retaining hardware during valve events.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eIncludes: springs, collars, and keepers for valve assembly\u003c\/li\u003e \u003cli\u003eDesigned specifically for Harley Davidson XL models from 1957 to 1966\u003c\/li\u003e \u003cli\u003eManufactured in the USA with high-quality materials\u003c\/li\u003e \u003cli\u003eComplete kit for valve spring replacement and maintenance\u003c\/li\u003e \u003cli\u003eCompatible with recommended accessory tools for efficient installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFitment includes Harley Davidson XL models across the listed years: 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981.\u003c\/p\u003eSifton valve spring kit includes all springs collars and keepers necessary.\n\u003cp\u003eThe Sifton Valve Spring Kit (Part 15-0063) is designed for precise valve operation in Harley Davidson XL models from 1957 through 1966. This comprehensive kit includes all necessary springs, collars, and keepers, ensuring a complete upgrade or replacement for your engine's valvetrain components. Crafted in the USA, this kit guarantees quality and durability to meet the demands of vintage motorcycle restoration and performance tuning. The set is ideal for maintaining optimal valve timing and ensuring smooth engine operation, providing the essential parts required for a thorough valve assembly overhaul. Proper installation of these components helps improve engine responsiveness and longevity, making this kit a valuable addition to any Harley Davidson XL maintenance toolkit.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eIncludes all springs, collars, and keepers necessary for valve assembly\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eDesigned specifically for Harley Davidson XL models from 1957 to 1966\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eManufactured in the USA with high-quality materials\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eComplete kit for valve spring replacement and maintenance\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eCompatible with recommended accessory tools for efficient installation\u003c\/li\u003e\u003c\/ul\u003e\n\u003cbr\u003e\nFitment:\u003cbr\u003e\nHarley Davidson XL 1957\u003cbr\u003e\nHarley Davidson XL 1958\u003cbr\u003e\nHarley Davidson XL 1959\u003cbr\u003e\nHarley Davidson XL 1960\u003cbr\u003e\nHarley Davidson XL 1961\u003cbr\u003e\nHarley Davidson XL 1962\u003cbr\u003e\nHarley Davidson XL 1963\u003cbr\u003e\nHarley Davidson XL 1964\u003cbr\u003e\nHarley Davidson XL 1965\u003cbr\u003e\nHarley Davidson XL 1966\u003cbr\u003e\nHarley Davidson XL 1967\u003cbr\u003e\nHarley Davidson XL 1968\u003cbr\u003e\nHarley Davidson XL 1969\u003cbr\u003e\nHarley Davidson XL 1970\u003cbr\u003e\nHarley Davidson XL 1971\u003cbr\u003e\nHarley Davidson XL 1972\u003cbr\u003e\nHarley Davidson XL 1973\u003cbr\u003e\nHarley Davidson XL 1974\u003cbr\u003e\nHarley Davidson XL 1975\u003cbr\u003e\nHarley Davidson XL 1976\u003cbr\u003e\nHarley Davidson XL 1977\u003cbr\u003e\nHarley Davidson XL 1978\u003cbr\u003e\nHarley Davidson XL 1979\u003cbr\u003e\nHarley Davidson XL 1980\u003cbr\u003e\nHarley Davidson XL 1981\u003c\/div\u003e","brand":"Sifton","offers":[{"title":"Default Title","offer_id":44650413817898,"sku":"13-9211","price":91.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/13-9211a.jpg?v=1785808945","url":"https:\/\/atticusgoods.com\/products\/sifton-valve-spring-kit-for-harley-davidson-xl-1957-1966-part-15-0063","provider":"Atticus Goods","version":"1.0","type":"link"}