{"product_id":"forged-piston-set-100-00mm-bore-for-subaru-ej257","title":"Forged Piston Set, 100.00mm Bore, for Subaru EJ257","description":"The Manley MAN612000C-4 is a set of four Platinum Series pistons engineered for the Subaru EJ257 engine, specifically for the 2006-2014 WRX and 2004+ STi models. These pistons are crafted from 2618 high-strength aluminum, ensuring durability under demanding conditions. Key features include moly-coated skirts to reduce friction and wear, a lightweight design with an offset wrist pin for quieter operation, and pressure balance grooves for improved performance. The dish-top piston design, with a -22 cc dome volume and a 51cc cylinder head volume, results in a compression ratio of 8.5:1. The pistons have a standard 99.5mm bore size, a 1.209-inch compression distance, and a 5.137-inch rod length, designed for a 79mm standard stroke.\n\nThis piston set is designed to accommodate +1mm valve sizes and comes complete with premium steel top rings and Napier second rings for enhanced sealing. Higher tension oil rings are included for superior oil control. The package includes four pistons, four piston ring sets (part number 46995DT-4), four wrist pins with a standard .180\" wall thickness, and four round wire locks.\n\nManley recommends a piston clearance of .003 inches for mildly boosted applications and .0035 inches for highly boosted applications, measured .850 inches from the bottom of the oil ring for 79\/83mm strokes or 1.100 inches for a 75mm stroke.","brand":"Manley","offers":[{"title":"Default Title","offer_id":52662906978616,"sku":"MAN612000C-4","price":699.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687502276.jpg?v=1784321829","url":"https:\/\/store.motormia.co\/products\/forged-piston-set-100-00mm-bore-for-subaru-ej257","provider":"MOTORMIA","version":"1.0","type":"link"}