{"product_id":"mcs531771","title":"S\u0026S 3-1\/2\" Bore 9:1cr Piston Kit. +.030\" – 1979–1984 1340cc\/80\" Shovel","description":"\u003ch2\u003eS\u0026amp;S 3-1\/2\" Bore 9:1CR Piston Kit. +.030\" – 1979–1984 1340cc\/80\" Shovel\u003c\/h2\u003e\n\u003cp\u003eHigh 9:1 (53cc dome) compression ratio. Fits as a direct replacement for 1340 (80\") Shovelhead models; 3-1\/2\" bore with stock 4-1\/4\" stroke. These S\u0026amp;S forged pistons come in an advanced alloy and skirt profiles; resulting in a quiet engine and long life; previously only achievable with cast pistons. This is an excellent choice to overhaul your stock 1340cc Shovel with a higher compression piston. 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.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003e79-84 1340cc\/80\" Shovel (NU)\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e S\u0026amp;S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e MOTOR PARTS \u0026gt; PISTONS AND RINGS KITS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit:\u003c\/strong\u003e SET\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct code:\u003c\/strong\u003e 531771\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Numbers\u003c\/h2\u003e\n\u003cp\u003eMCS Part Number: 531771\u003cbr\u003eManufacturer Part Number: 106-5522\u003c\/p\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":44341763735872,"sku":"MCS531771","price":431.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1329\/4265\/files\/531768k.jpg?v=1776035427","url":"https:\/\/hogparts.co.uk\/products\/mcs531771","provider":"Hogparts UK Ltd","version":"1.0","type":"link"}