{"product_id":"flat-top-piston-set-4-000-bore-030-oversize","title":"Flat Top Piston Set, 4.000\" Bore +.030\" Oversize","description":"The Keith Black KB134-030 piston set is engineered for demanding applications such as high-performance marine, drag race, circle track, street, or towing builds. Crafted from 390 hypereutectic aluminum alloy, these pistons are heat-treated to T6 standards, resulting in a component that is approximately 30 percent stronger than conventional cast pistons. This enhanced durability allows for tighter piston-to-wall clearances, contributing to improved engine efficiency and longevity.\n\nEach piston features a flat top design complemented by two valve reliefs, accommodating various camshaft profiles. The specific dimensions include a 4.000\" +.030\" oversize bore, a 1.433 in. compression height, and a 5\/64, 5\/64, 3\/16 ring pack. The piston head volume is +7.00cc, and the piston weight is 505g, with the included pin weighing 145g. The pin diameter is .927\".\n\nThese pistons are designed for Small Block Chevrolet 383 stroker engines utilizing a 3.750\" stroke and 5.7\" connecting rods. The 390 alloy composition provides excellent wear resistance and thermal stability, making them a reliable choice for performance engine reconditioning and upgrades.","brand":"Keith Black","offers":[{"title":"Default Title","offer_id":52662810345784,"sku":"KB134-030","price":367.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687499376.jpg?v=1784321258","url":"https:\/\/store.motormia.co\/products\/flat-top-piston-set-4-000-bore-030-oversize","provider":"MOTORMIA","version":"1.0","type":"link"}