{"product_id":"stage-1-street-track","title":"Stage 1 Street\/Track","description":"\u003ch2 data-start=\"211\" data-end=\"247\" style=\"text-align: center;\"\u003eStage 1 NA Street \/ Track Package\u003c\/h2\u003e\n\u003cp data-start=\"249\" data-end=\"687\"\u003eThe \u003cstrong data-start=\"253\" data-end=\"309\"\u003eVertex Motorsports Stage 1 NA Street \/ Track Package\u003c\/strong\u003e is a complete naturally aspirated performance upgrade designed to dramatically improve handling, sound, responsiveness, and overall driving confidence—without sacrificing street reliability. This package is engineered for Mustang owners who want a balanced, track-capable setup that performs just as well on the street as it does during aggressive driving or open-track events.\u003c\/p\u003e\n\u003cp data-start=\"689\" data-end=\"1079\"\u003eAt the foundation of this package is our \u003cstrong data-start=\"730\" data-end=\"766\"\u003eS550 Suspension Overhaul Package\u003c\/strong\u003e, which transforms the chassis by eliminating unwanted deflection, reducing wheel hop, and sharpening steering response. Performance coilovers, upgraded bushings, IRS bracing, and precision alignment components work together to keep the car planted and predictable under hard braking, cornering, and acceleration.\u003c\/p\u003e\n\u003cp data-start=\"1081\" data-end=\"1444\"\u003eTo complement the improved chassis control, the Stage 1 package adds \u003cstrong data-start=\"1150\" data-end=\"1171\"\u003elong-tube headers\u003c\/strong\u003e and a \u003cstrong data-start=\"1178\" data-end=\"1210\"\u003eperformance cat-back exhaust\u003c\/strong\u003e, unlocking additional naturally aspirated horsepower while delivering a deep, aggressive exhaust note. A \u003cstrong data-start=\"1316\" data-end=\"1338\"\u003ecustom calibration\u003c\/strong\u003e is then applied to optimize throttle response, fueling, and power delivery for both street and track use.\u003c\/p\u003e\n\u003cp data-start=\"1446\" data-end=\"1691\"\u003ePower is efficiently transferred to the rear wheels through a \u003cstrong data-start=\"1508\" data-end=\"1530\"\u003e1-piece driveshaft\u003c\/strong\u003e, reducing rotational mass and drivetrain loss while improving throttle response. A \u003cstrong data-start=\"1614\" data-end=\"1640\"\u003edriveshaft safety loop\u003c\/strong\u003e is included for added safety and track compliance.\u003c\/p\u003e\n\u003cp data-start=\"1693\" data-end=\"1857\"\u003eThe package is completed with \u003cstrong data-start=\"1723\" data-end=\"1752\"\u003eprofessional installation\u003c\/strong\u003e, ensuring every component is installed, aligned, and dialed in to work as a cohesive performance system.\u003c\/p\u003e\n\u003chr data-start=\"1859\" data-end=\"1862\"\u003e\n\u003ch3 data-start=\"1864\" data-end=\"1884\"\u003ePackage Includes\u003c\/h3\u003e\n\u003cul data-start=\"1886\" data-end=\"2158\"\u003e\n\u003cli data-start=\"1886\" data-end=\"1931\"\u003e\n\u003cp data-start=\"1888\" data-end=\"1931\"\u003eComplete S550 Suspension Overhaul Package\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1932\" data-end=\"1978\"\u003e\n\u003cp data-start=\"1934\" data-end=\"1978\"\u003ePerformance coilovers and chassis upgrades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1979\" data-end=\"2000\"\u003e\n\u003cp data-start=\"1981\" data-end=\"2000\"\u003eLong-tube headers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2001\" data-end=\"2040\"\u003e\n\u003cp data-start=\"2003\" data-end=\"2040\"\u003ePerformance cat-back exhaust system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2041\" data-end=\"2069\"\u003e\n\u003cp data-start=\"2043\" data-end=\"2069\"\u003eCustom dyno-based tuning\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2070\" data-end=\"2092\"\u003e\n\u003cp data-start=\"2072\" data-end=\"2092\"\u003e1-piece driveshaft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2093\" data-end=\"2119\"\u003e\n\u003cp data-start=\"2095\" data-end=\"2119\"\u003eDriveshaft safety loop\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2120\" data-end=\"2158\"\u003e\n\u003cp data-start=\"2122\" data-end=\"2158\"\u003eProfessional installation included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2160\" data-end=\"2163\"\u003e\n\u003ch3 data-start=\"2165\" data-end=\"2189\"\u003ePerformance Benefits\u003c\/h3\u003e\n\u003cul data-start=\"2191\" data-end=\"2441\"\u003e\n\u003cli data-start=\"2191\" data-end=\"2233\"\u003e\n\u003cp data-start=\"2193\" data-end=\"2233\"\u003eSharper handling and steering response\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2234\" data-end=\"2272\"\u003e\n\u003cp data-start=\"2236\" data-end=\"2272\"\u003eReduced wheel hop and chassis flex\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2273\" data-end=\"2317\"\u003e\n\u003cp data-start=\"2275\" data-end=\"2317\"\u003eIncreased naturally aspirated horsepower\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2318\" data-end=\"2373\"\u003e\n\u003cp data-start=\"2320\" data-end=\"2373\"\u003eImproved throttle response and driveline efficiency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2374\" data-end=\"2402\"\u003e\n\u003cp data-start=\"2376\" data-end=\"2402\"\u003eAggressive exhaust sound\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2403\" data-end=\"2441\"\u003e\n\u003cp data-start=\"2405\" data-end=\"2441\"\u003eTrack-ready safety and reliability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2443\" data-end=\"2446\"\u003e\n\u003ch3 data-start=\"2448\" data-end=\"2461\"\u003eIdeal For\u003c\/h3\u003e\n\u003cul data-start=\"2463\" data-end=\"2633\"\u003e\n\u003cli data-start=\"2463\" data-end=\"2501\"\u003e\n\u003cp data-start=\"2465\" data-end=\"2501\"\u003eStreet-driven performance Mustangs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2502\" data-end=\"2538\"\u003e\n\u003cp data-start=\"2504\" data-end=\"2538\"\u003eTrack day and road course builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2539\" data-end=\"2598\"\u003e\n\u003cp data-start=\"2541\" data-end=\"2598\"\u003eDrivers seeking NA performance without forced induction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2599\" data-end=\"2633\"\u003e\n\u003cp data-start=\"2601\" data-end=\"2633\"\u003eBalanced street \/ track setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Vertex Motorsports","offers":[{"title":"Default Title","offer_id":47875110437019,"sku":null,"price":13042.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0714\/9469\/7115\/files\/SP081_image4_large_a8f350c3-f445-42e1-a74e-e5b4d6a15aad.jpg?v=1768703858","url":"https:\/\/vertexmotorsports.com\/products\/stage-1-street-track","provider":"Vertex Motorsports","version":"1.0","type":"link"}