{"product_id":"mercedes-benz-m273-forged-internals-1-500hp-rated-rods-pistons-ypg-motorsport","title":"Mercedes-Benz M273 Forged Internals — 1,500HP+ Rated | Rods \u0026 Pistons | YPG Motorsport","description":"\u003cp\u003e\u003cstrong\u003eMercedes-Benz M273 Forged Internals — Rods \u0026amp; Pistons Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mercedes-Benz M273 5.5L naturally aspirated V8 is the SOHC 3-valve engine that powered a generation of flagship Mercedes models — the S550 (W221), E550 (W211), CLS550 (C219), CL550 (C216), SL550 (R230), ML550 (W164), GL550 (X164), and CLK550 (C209). Known for smooth power delivery and solid reliability, the M273 is increasingly popular as a forced induction platform — but the factory cast internals become the failure point under boost.\u003c\/p\u003e\n\u003cp\u003eYPG Motorsport's forged internals kit replaces the factory rods and pistons with \u003cstrong\u003eforged H-beam connecting rods\u003c\/strong\u003e and \u003cstrong\u003eforged aluminum pistons\u003c\/strong\u003e, rated for 1,500HP+ and built to handle turbo conversions and sustained high-RPM abuse. The essential bottom-end upgrade for any M273 owner building serious power.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8x Forged H-beam connecting rods (ARP hardware)\u003c\/li\u003e\n\u003cli\u003e8x Forged aluminum pistons with rings and wrist pins\u003c\/li\u003e\n\u003cli\u003eBalanced and matched set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Upgrade\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFactory cast internals are the first failure point under forced induction\u003c\/li\u003e\n\u003cli\u003eForged components handle higher cylinder pressure and heat\u003c\/li\u003e\n\u003cli\u003eEssential for turbo conversion builds\u003c\/li\u003e\n\u003cli\u003eDrop-in fitment — no block machining required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMercedes-Benz S550 (W221)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz E550 (W211)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz CLS550 (C219)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz CL550 (C216)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz SL550 (R230)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz ML550 (W164)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz GL550 (X164)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz CLK550 (C209)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eProfessional installation required. Contact YPG Motorsport for engine build packages and turbo conversion kits.\u003c\/em\u003e\u003c\/p\u003e","brand":"YPG Motorsport","offers":[{"title":"Default Title","offer_id":50733682491584,"sku":"YPG-M273-FORGED-INT","price":4999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0084\/7288\/7360\/files\/pistons_clean.png?v=1788753139","url":"https:\/\/ypgmotorsport.com\/products\/mercedes-benz-m273-forged-internals-1-500hp-rated-rods-pistons-ypg-motorsport","provider":"YPG Motorsport","version":"1.0","type":"link"}