{"product_id":"mmx-performance-bmw-g8x-m3-m4-underbody-chassis-brace","title":"MMX Performance Underbody Chassis Brace for BMW G80 G81 G82 G83 M3 M4 S58 Twin Turbo (2021+)","description":"\u003cp\u003eThe \u003ca href=\"https:\/\/ind-distribution.com\/collections\/mmx-performance\"\u003eMMX Performance\u003c\/a\u003e Underbody Chassis Brace is a precision-engineered replacement for the factory underbody brace found on the BMW G8X M3 and M4. Developed for vehicles running larger-diameter aftermarket exhaust systems, the brace provides an additional 15mm of exhaust clearance while maintaining the vehicle's original ground clearance.\u003c\/p\u003e\n\n\u003cp\u003ePrecision CNC machined from billet 6061-T6 aluminum, the MMX brace combines exceptional strength with reduced weight. Its optimized profile removes unnecessary material while preserving the rigidity required to reinforce a key structural section of the chassis, improving overall stability and dynamic response during both street and track driving.\u003c\/p\u003e\n\n\u003cp\u003eUnlike the factory stamped component, the billet aluminum construction delivers increased structural rigidity while creating additional clearance beneath the vehicle. This helps reduce the possibility of exhaust contact without compromising ride height or requiring permanent vehicle modifications.\u003c\/p\u003e\n\n\u003cp\u003eDesigned as a direct replacement, the MMX Underbody Chassis Brace installs using the original factory mounting points with no cutting, drilling, or fabrication required. The installation is fully reversible, making it an ideal upgrade for both modified and OEM-plus G8X builds.\u003c\/p\u003e\n\n\u003cp\u003eDesigned and tested in the United Kingdom, the MMX Underbody Chassis Brace reflects the brand's commitment to precision manufacturing, functional engineering, and performance-driven product development.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvides an additional 15mm of exhaust clearance over the factory brace\u003c\/li\u003e\n\u003cli\u003eMaintains factory ground clearance\u003c\/li\u003e\n\u003cli\u003eIncreases chassis rigidity for improved vehicle dynamics\u003c\/li\u003e\n\u003cli\u003ePrecision CNC machined from billet 6061-T6 aluminum\u003c\/li\u003e\n\u003cli\u003eOptimized lightweight design without sacrificing strength\u003c\/li\u003e\n\u003cli\u003eIdeal for vehicles equipped with larger aftermarket exhaust systems\u003c\/li\u003e\n\u003cli\u003eDirect replacement for the factory underbody brace\u003c\/li\u003e\n\u003cli\u003eUses original factory mounting points\u003c\/li\u003e\n\u003cli\u003eNo cutting, drilling, or permanent modifications required\u003c\/li\u003e\n\u003cli\u003eFully reversible installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment (manufacturer):\u003c\/strong\u003e Fits 2021+ BMW G80 M3, G81 M3, G82 M4, G83 M4 with S58 engine (manufacturer: chassis G80, G81, G82 \u0026amp; G83; model year 2021+; engine S58)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e MMX Performance   \u003cstrong\u003ePart #:\u003c\/strong\u003e MMR13-1601\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEmissions: no CARB EO number is listed for this part. Check your state's emissions laws before street use.\u003c\/strong\u003e\u003c\/p\u003e","brand":"MMX Performance","offers":[{"title":"Default Title","offer_id":67911649558743,"sku":"MMR13-1601","price":429.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0852\/0355\/0423\/files\/mmx-performance-bmw-g8x-m3-m4-underbody-chassis-brace-white-background.webp?v=1793217429","url":"https:\/\/speedhausparts.com\/products\/mmx-performance-bmw-g8x-m3-m4-underbody-chassis-brace","provider":"SPEEDhaus Parts","version":"1.0","type":"link"}