{"product_id":"hks-21005-an018-piston-ring-set-d-86-5-6-pcs","title":"HKS 21005-AN018 Piston Ring Set d-86.5 (6 pcs)","description":"\u003ch2\u003eDescription HKS 21005-AN018 Piston Ring Set d-86.5 (6 pcs)\u003c\/h2\u003e \u003cp\u003eThe HKS 21005-AN018 piston ring set (diameter 86.5 mm, 6 pieces) is designed to improve sealing performance, reduce friction, and enhance engine durability. Incorporating the latest advancements in piston ring technology, this renewed specification addresses the evolving demands of modern internal combustion engines.\u003c\/p\u003e \u003ch3\u003eFeatures: Top Ring\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eReduced blow-by gas through a 27% smaller gas passage area at room temperature\u003c\/li\u003e \u003cli\u003eHigh thermal expansion coefficient material reduces joint gap by approx. 88% at high temperature\u003c\/li\u003e \u003cli\u003eImproved thermal conductivity (+37% vs. conventional) for better cooling and reduced groove wear\u003c\/li\u003e \u003cli\u003eLower ring tension decreases friction\u003c\/li\u003e \u003cli\u003eRevised surface treatment and optimized film thickness extend service life\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFeatures: 2ND Ring\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eEnlarged joint gap (~25%) reduces second land pressure and stabilizes top ring\u003c\/li\u003e \u003cli\u003ePrevents top ring fluttering, enhancing sealing power\u003c\/li\u003e \u003cli\u003eApprox. 18% lower ring tension reduces friction compared to conventional design\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFeatures: Oil Ring\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eThree-piece oil ring design replaces conventional two-piece type\u003c\/li\u003e \u003cli\u003eApprox. 10% lower ring tension significantly reduces friction\u003c\/li\u003e \u003cli\u003eMaintains effective oil scraping function without increased oil consumption\u003c\/li\u003e \u003c\/ul\u003e ","brand":"HKS","offers":[{"title":"Default Title","offer_id":44143548629172,"sku":"21005-AN018","price":472.23,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/image-coming-soon_623f0e55-612b-421f-8d53-74db33ae4b53.png?v=1778572646","url":"https:\/\/atomic-shop.eu\/products\/hks-21005-an018-piston-ring-set-d-86-5-6-pcs","provider":"ATOMIC-SHOP Performance Parts \u0026 Motorsport Equipment - EU","version":"1.0","type":"link"}