{"product_id":"flat-top-piston-set-with-2-valve-reliefs","title":"Flat-Top Piston Set with 2 Valve Reliefs","description":"The KB Performance KB151-STD hypereutectic pistons are engineered for Ford Small Block V8 engines, specifically for a 4.000\" cylinder bore and a 3.500\" crankshaft stroke with a 5.956\" connecting rod, suitable for 352ci applications.\n\nConstructed from a 390 alloy with 16% silicon and a T-6 heat treat, these pistons offer benefits for compression-restricted classes. Their lower alloy conductivity and reflective piston tops help reduce oil temperatures and minimize combustion heat and pressure loss. The pistons feature CNC machined pin bores for straight and accurately sized bores, diamond-finished skirts, and machined-in oil returns. An accumulator groove aids the compression ring seal, while mini grooves help prevent scuffing if the engine is overheated. Triple spiral lock rings are included.\n\nThese pistons are sold as sets of 8 and are designed for various high-performance applications, including marine, drag racing, circle track, street, and towing builds. The ring groove sizes are 5\/64\", 5\/64\", and 3\/16\". Note that piston rings are not included.\n\nImportant considerations include a note that for pre-1971 blocks, the pistons are .020\" shorter, and there may not be enough material to clean up. The pistons have a flat top with 2 valve reliefs and a dome volume of +6.5cc. They are sold without warranty or guarantee of any kind.","brand":"KB Performance","offers":[{"title":"Default Title","offer_id":52662808281400,"sku":"KB151-STD","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687499150.jpg?v=1784321220","url":"https:\/\/store.motormia.co\/products\/flat-top-piston-set-with-2-valve-reliefs","provider":"MOTORMIA","version":"1.0","type":"link"}