{"product_id":"hks-21005-an022-piston-ring-set-type-lf-d-86-mm-4-pcs","title":"HKS 21005-AN022 Piston Ring Set TYPE-LF d-86 mm (4 pcs)","description":"\u003ch2\u003eDescription HKS 21005-AN022 Piston Ring Set TYPE-LF d-86 mm (4 pcs)\u003c\/h2\u003e \u003cp\u003ePiston rings are important components that determine engine performance. The environment surrounding internal combustion engines is changing significantly, and the technology and theory behind piston rings have constantly evolved. HKS piston rings have been renewed with specifications incorporating the latest technology.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The remaining sizes will be updated progressively in the future.\u003c\/p\u003e \u003ch3\u003eTop Ring:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eReduced blow-by gas at both regular and high temperatures. The gas passage area at the joint at room temperature has been reduced by approximately 27% compared to existing products, significantly reducing blow-by gas emissions.\u003c\/li\u003e \u003cli\u003eMaterials with a high thermal expansion coefficient reduce the gap between joints by approximately 88% during operation at high temperatures. The risk associated with the reduced path area has already been confirmed.\u003c\/li\u003e \u003cli\u003eThe material has thermal conductivity approximately 37% higher than conventional products, improving piston cooling performance and reducing ring groove wear.\u003c\/li\u003e \u003cli\u003eRing tension is lowered to reduce friction. The surface treatment emphasizes initial blending, and the film thickness has been changed for durability to achieve a longer life than conventional products.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e2nd Ring:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eStabilizes the posture of the top ring and contributes to improved sealing force.\u003c\/li\u003e \u003cli\u003eThe gap at the mating end has been enlarged by approximately 25% to reduce second-land pressure.\u003c\/li\u003e \u003cli\u003eReducing second-land pressure suppresses top-ring “fluttering,” the phenomenon of the ring going out of control in the groove, and improves sealing power.\u003c\/li\u003e \u003cli\u003eRing tension is reduced by approximately 18% compared to the conventional product to reduce friction.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eOil Ring:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eReduced friction is achieved by a 3-piece design.\u003c\/li\u003e \u003cli\u003eA 3-piece oil ring is used instead of the conventional 2-piece oil ring.\u003c\/li\u003e \u003cli\u003eRing tension is reduced by approximately 10%, greatly reducing friction.\u003c\/li\u003e \u003cli\u003eEven with reduced tension, the structure does not increase oil consumption, so oil-scraping function is not deteriorated.\u003c\/li\u003e \u003c\/ul\u003e ","brand":"HKS","offers":[{"title":"Default Title","offer_id":59747026698526,"sku":"21005-AN022","price":836.89,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/0553\/3982\/files\/hks-21005-an022-piston-ring-set_3f46cd16-94aa-4729-af65-8ed207a0925b.jpg?v=1786088193","url":"https:\/\/atomic-shop.ae\/products\/hks-21005-an022-piston-ring-set-type-lf-d-86-mm-4-pcs","provider":"ATOMIC-SHOP Performance Parts \u0026 Motorsport Equipment - UAE","version":"1.0","type":"link"}