{"product_id":"r1-performance-package-r230-sl-550-413-hp-422-lb-ft-5-5l-na-v8-m273","title":"R1 Performance Package | R230 | SL 550 | 413 HP \/ 422 LB-FT | 5.5L NA V8 | M273","description":"\u003cp\u003e\u003cstrong\u003eR1 Performance Package for 221 - S 550. Includes ECU Upgrade and Stainless Steel Header. Up to 413HP and 422 LB-FT.\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eGains: +31HP \u0026amp; +31LB-FT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe R1 performance package for the Mercedes 550 includes our proprietary ECU upgrade in addition to our stainless steel shorty headers designed specifically for the 550 V8 for a combination that provides increased performance, sound and throttle response across the vehicles entire powerband.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eR1 performance package includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRENNtech ECU Upgrade\u003c\/li\u003e\n\u003cli\u003eStainless Steel Shorty Headers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSL 550 (R230) Stock Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e382 HP \/ 391 LB-FT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModified Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e413 HP \/ 422 LB-FT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGains\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e+31 HP \/ +31 LB-FT\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RENNtech Inc","offers":[{"title":"Default Title","offer_id":46824773452032,"sku":"PKG.230.SL550.R1","price":5290.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/9972\/5312\/files\/m273_r1_performance_package.jpg?v=1752572587","url":"https:\/\/store.renntechmercedes.com\/es\/products\/r1-performance-package-r230-sl-550-413-hp-422-lb-ft-5-5l-na-v8-m273","provider":"RENNtech Inc","version":"1.0","type":"link"}