{"product_id":"hypereutectic-pistons-set-4-000-bore-1-560-compression-distance","title":"Hypereutectic Pistons Set, 4.000\" Bore, 1.560\" Compression Distance","description":"The Speed-Pro H631CP pistons are engineered for demanding applications such as street performance, bracket racing, and oval track \"claimers.\" They are manufactured from an exclusive FM244 high silicon alloy, providing enhanced strength and wear resistance. These pistons are further enhanced with sophisticated design and feature Duroshield anti-friction coated skirts.\n\nEach set contains 8 weight-matched pistons, designed and manufactured in advanced facilities. They are built to work perfectly with normal ring gaps and include wrist pins. The piston specifications include a flat top style with 2 valve reliefs, a 4.000\" cylinder bore, and a 1.560\" compression distance. They are designed for a 3.480\" crankshaft stroke and a 5.700\" connecting rod, resulting in a 350ci displacement.\n\nCompression ratio will vary based on cylinder head volume: 10.28\" with 58.0 cc heads, 9.99\" with 60.5 cc heads, 9.61\" with 64.0 cc heads, 9.21\" with 68.0 cc heads, 8.85\" with 72.0 cc heads, and 8.52\" with 76.0 cc heads. The ring groove sizes are 5\/64\", 5\/64\", and 3\/16\". Note that piston rings are not included, and these pistons are sold without warranty or guarantee of any kind.","brand":"Speed-Pro","offers":[{"title":"Default Title","offer_id":52663777427768,"sku":"H631CP","price":322.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687712985.jpg?v=1784329523","url":"https:\/\/store.motormia.co\/products\/hypereutectic-pistons-set-4-000-bore-1-560-compression-distance","provider":"MOTORMIA","version":"1.0","type":"link"}