{"product_id":"rm-engineering-gt4-splitter-kit-for-f8x-m3-4","title":"RM Engineering GT4+ Splitter Kit For F8X M3\/4","description":"\u003ch2\u003e\u003cstrong\u003eEngineered for Maximum Performance. Inspired by BMW Motorsport. Proven on Track.\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRidgeline Motorsport GT4+ Aero Kit\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis our most comprehensive aerodynamic package for the BMW F8X platform.\u003c\/p\u003e\n\u003cp\u003eDeveloped from the visual and aerodynamic foundation of the BMW F82 M4 GT4 race car, the GT4+ system evolves beyond the limitations of the original GT4 rulebook. Each component was redesigned using real-world track experience to increase aerodynamic performance while maintaining a balanced relationship between front and rear downforce.\u003c\/p\u003e\n\u003cp\u003eDesigned for serious track-day drivers, time attack competitors, and high-performance street builds, the complete GT4+ package combines a reinforced front lip, tunneled front splitter, GT4 canards, and a chassis-mounted rear wing into one integrated aerodynamic system.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDesigned for compatible BMW F8X M models, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBMW F80 M3 Sedan\u003c\/li\u003e\n\u003cli\u003eBMW F82 M4 Coupe\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlease confirm your vehicle model, bumper configuration, trunk configuration, and competition-class requirements before ordering.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTrack-Proven Development\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe GT4+ Aero Kit was developed and tested on road-going BMW F8X vehicles equipped primarily with bolt-on modifications.\u003c\/p\u003e\n\u003cp\u003eTesting results were achieved without extensive vehicle weight reduction and while using\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e275\/35R18 200TW street-class tires\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eRecorded F-Chassis Results\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSuper Lap Battle 2025 — Circuit of the Americas\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFastest BMW in class, excluding two Toyota Supras\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWeatherTech Raceway Laguna Seca\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBest recorded lap:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1:34.341\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGlobal Time Attack Finals — Buttonwillow CW13\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFourth place\u003c\/li\u003e\n\u003cli\u003eBest recorded lap:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1:50.940\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFastest BMW in class, excluding three Toyota Supras\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReal-world testing, competition use, and continuous development remain central to every Ridgeline Motorsport aerodynamic product.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eGT4+ Front Lip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe GT4+ Front Lip features a reinforced design developed to create a sealed front aerodynamic plane when paired with the GT4+ Tunneled Splitter.\u003c\/p\u003e\n\u003cp\u003eThe front lip may also be installed without the lower splitter. However, using the lip without the splitter may reduce its structural support and service life, particularly during track use or contact with road surfaces.\u003c\/p\u003e\n\u003ch4\u003eFront Lip Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eReinforced GT4-derived design\u003c\/li\u003e\n\u003cli\u003eDesigned to integrate with the GT4+ Tunneled Splitter\u003c\/li\u003e\n\u003cli\u003eCreates a cleaner transition between the bumper and splitter\u003c\/li\u003e\n\u003cli\u003eMay be installed separately\u003c\/li\u003e\n\u003cli\u003eHardware included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGT4+ Tunneled Front Splitter\u003c\/h3\u003e\n\u003cp\u003eThe GT4+ Tunneled Splitter combines the front lip and lower splitter into a two-piece aerodynamic system.\u003c\/p\u003e\n\u003cp\u003eAn integrated airflow channel helps maintain airflow toward the factory lower oil cooler, while the molded tunnel increases aerodynamic surface control, structural rigidity, and front-end performance.\u003c\/p\u003e\n\u003ch4\u003eSplitter Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-piece front lip and splitter system\u003c\/li\u003e\n\u003cli\u003eIntegrated airflow channel for the lower oil cooler\u003c\/li\u003e\n\u003cli\u003eOne-piece molded aerodynamic tunnel\u003c\/li\u003e\n\u003cli\u003eDesigned to increase front-end downforce\u003c\/li\u003e\n\u003cli\u003eReinforced construction for improved rigidity\u003c\/li\u003e\n\u003cli\u003eInstallation hardware included\u003c\/li\u003e\n\u003cli\u003eMinor modification of OEM vehicle components required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAluminum Skid Block Kit\u003c\/h3\u003e\n\u003cp\u003eAn aluminum skid block kit is available \u003c\/p\u003e\n\u003cp\u003eThe skid blocks help protect the lower splitter surface from contact with pavement, curbing, driveways, and track surfaces.\u003c\/p\u003e","brand":"RM ENGINEERING","offers":[{"title":"Lip+Splitter","offer_id":51743600771360,"sku":null,"price":1066.0,"currency_code":"GBP","in_stock":true},{"title":"Lip+Splitter+Skid Block","offer_id":51743600804128,"sku":null,"price":1141.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/9339\/1392\/files\/27906.png?v=1779776835","url":"https:\/\/ridgelinemotorsport.com\/products\/rm-engineering-gt4-splitter-kit-for-f8x-m3-4","provider":"Ridgeline Motorsport","version":"1.0","type":"link"}