{"product_id":"performance-piston-set-84mm-bore-4cc-dish","title":"Performance Piston Set, 84mm Bore, -4cc Dish","description":"The Supertech P4-MA8400-N4 pistons are engineered for performance applications in the 1994-1997 Mazda MX-5\/Miata. Each piston measures 84mm in bore diameter, has a 30.5mm compression height, and features a -4cc dish, resulting in a 8.7:1 compression ratio.\n\nConstructed from an enhanced 4032 alloy, which includes additional copper, nickel, and magnesium, these pistons provide superior wear resistance and thermal conductivity while maintaining low thermal expansion. This robust material has demonstrated the ability to withstand up to 42psi of boost. The manufacturing process involves a multi-step forging and CNC machining, followed by heat treatments to ensure high tensile strength and uniform hardness.\n\nThese pistons include contact reduction grooves and honed pin bores for precise fitting. The accompanying wrist pins are made from cold-extruded chrome moly steel for high strength. A 'phosphate dry lubricant' coating is applied to protect the piston rings and enhance lubrication in the skirt and cylinder area.\n\nIt is important to note that these pistons are specifically designed for the 1994-1997 Mazda MX-5\/Miata and will not fit factory OEM pistons. Due to the nature of performance engine components, these pistons are sold without any express or implied warranty of merchantability or fitness for a particular purpose.","brand":"Supertech","offers":[{"title":"Default Title","offer_id":52663921180984,"sku":"P4-MA8400-N4","price":444.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687720539.png?v=1784330850","url":"https:\/\/store.motormia.co\/products\/performance-piston-set-84mm-bore-4cc-dish","provider":"MOTORMIA","version":"1.0","type":"link"}