{"product_id":"forged-piston-set-77-50mm-bore-9-5-1-compression","title":"Forged Piston Set, 77.50mm Bore, 9.5:1 Compression","description":"The Supertech Piston Set is a performance-oriented upgrade engineered for 2007-2013 Mini Cooper and Mini Cooper S applications. Manufactured using a multi-step forging process and state-of-the-art CNC machining, these pistons are created from high-silicone 4032 alloy, which includes additional copper, nickel, and magnesium to optimize thermal expansion and wear resistance. This alloy construction has been proven to withstand high-boost pressures, such as 42psi, in demanding conditions.\n\nEach piston features a phosphate dry lubricant coating on the skirt to protect against micro-welding and improve lubrication. The wrist pins are constructed from cold-extruded chrome moly steel, and the pin bores are honed and reamed to ensure a precise fit. Please note that this kit requires the use of GNH07750 rings for installation.","brand":"Supertech","offers":[{"title":"Default Title","offer_id":52663921475896,"sku":"P4-MIN56-77.5-CR9.5","price":746.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687720532.jpg?v=1784330853","url":"https:\/\/store.motormia.co\/products\/forged-piston-set-77-50mm-bore-9-5-1-compression","provider":"MOTORMIA","version":"1.0","type":"link"}