{"product_id":"998cc-flat-top-piston","title":"998cc Flat Top Piston","description":"The Mini Spares Evolution design piston is a high-performance component manufactured from superior aluminum, intended for 998cc engines. These flat-top, non-slipper pistons are constructed with a high silicon content and feature drilled oil drain-back holes for enhanced strength, replacing older Hepolite designs.\n\nSuitable for compression ratios up to 12.5:1, this piston will yield approximately 9.6:1 CR when paired with a Cooper cylinder head. It is designed as a direct replacement for original Hepolite pistons 18516KR and P20950, used on the original 998cc Coopers. Note that these pistons are not dimensionally interchangeable with Hepolite types and must be installed in complete sets of four.\n\nFor installation with later press-fit type connecting rods, the circlips can be discarded. The recommended usage is one piston per Mini. These pistons are also suitable for use with specialized heat treatments, making them a competitive option for any engine build.","brand":"Mini Spares","offers":[{"title":"Default Title","offer_id":52689167614264,"sku":"P20950-20","price":35.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687389972.jpg?v=1784902868","url":"https:\/\/store.motormia.co\/products\/998cc-flat-top-piston","provider":"MOTORMIA","version":"1.0","type":"link"}