{"product_id":"s-s-3-7-16-bore-9-1cr-piston-kit-std","title":"S\u0026S, 3-7\/16\" bore 9:1CR piston kit. Std","description":"Standard replacement was 8:1 (46cc dome); these come with a 9:1 (57cc dome) compression ratio for a bit more oomph. S\u0026amp;S forged pistons with an advanced alloy and skirt profiles; resulting in a quiet engine and long life; previously only achievable with cast pistons. Used as replacement; with a higher compression ratio; for 1200cc (74\") Shovel; Pan and Knucklehead models. 3-7\/16\" bore with stock 3-31\/32\" stroke. Pistons include wrist pins; wrist pin clips and piston rings.Note: S\u0026amp;S piston fit recommendations: Close fit .0030\" to .0035\"; loose fit .004\" to .005\".Note: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components; prior to installation. It is of importance that a knowledgeable mechanic will install \u0026amp; make adjustments as required. The rider must follow standard break-in and riding procedures for overhauled engines.\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 41-78 1200cc\/74\" Knuckle; Pan; Shovel (NU)\u003c\/p\u003e","brand":"S\u0026S","offers":[{"title":"Default Title","offer_id":54307884794183,"sku":"531759","price":589.6,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/7812\/0519\/files\/531759k.jpg?v=1784483975","url":"https:\/\/www.chopperessentials.com\/products\/s-s-3-7-16-bore-9-1cr-piston-kit-std","provider":"Chopper Essentials Co.","version":"1.0","type":"link"}