{"product_id":"maxton-design-black-street-pro-rear-diffuser-bmw-3-g20-2018","title":"Maxton Design Street Pro Rear Bumper Diffuser \u0026 Lower Valance for BMW 3 Series G20 Saloon\/Sedan (2018+) – Rear Splitter Insert, Rear Apron Lip, Lower Insert\/Undertray – Matte Black or Matte Black Red Core","description":"\u003cdiv\u003e\n  \u003ch2\u003eMaxton Design Street Pro Lower Rear Valance for BMW 3 Series G20 Saloon 2018 onward\u003c\/h2\u003e\n\n  \u003cp\u003eGive your G20 saloon the punchy, motorsport-inspired rear end it deserves with this premium Street Pro lower diffuser insert from Maxton Design. Crafted for enthusiasts who want sharper styling and dependable build quality, this rear underbody spoiler adds a purposeful, track-ready look while remaining perfectly suited to daily driving in UK conditions. If you are shopping for a G20 rear splitter insert, rear valance panel, rear apron, or an OEM-plus body kit upgrade for the BMW 3 Series saloon, this is the go-to choice.\u003c\/p\u003e\n\n  \u003ch3\u003eFitment\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eCompatible with:\u003c\/strong\u003e BMW 3 Series G20 Saloon 2018 onward\u003c\/p\u003e\n\n  \u003ch3\u003eWhy this Street Pro rear insert is a brilliant upgrade\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeavy-duty 10 mm ABS construction for superb rigidity and long-term durability\u003c\/li\u003e\n    \u003cli\u003eExcellent impact and scratch resistance for real-world road use\u003c\/li\u003e\n    \u003cli\u003eUV-stabilised surface to help resist fading and discolouration\u003c\/li\u003e\n    \u003cli\u003eTemperature and weather resistant material designed for year-round British roads\u003c\/li\u003e\n    \u003cli\u003eSupplied ready to fit with protective film - no painting required\u003c\/li\u003e\n    \u003cli\u003eGenuine item with authenticity labelling\u003c\/li\u003e\n    \u003cli\u003eTUV MATERIALGUTACHTEN certified material for added confidence\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFinish options\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e10 mm matte black\u003c\/li\u003e\n    \u003cli\u003e10 mm matte black with red core accent\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat you receive\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eMaxton Design Street Pro rear lower panel\u003c\/li\u003e\n    \u003cli\u003eMounting hardware kit\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eStyle and presence that suits the 3 Series\u003c\/h3\u003e\n  \u003cp\u003eThis rear lower diffuser panel integrates cleanly with the G20 saloon’s lines, sharpening the stance and complementing performance exhaust systems and other aero pieces. The result is a crisp, aggressive look that feels factory-plus rather than overdone. We have installed this item on customer cars and our own build vehicles, and feedback on fit, finish, and the visual transformation has been consistently excellent.\u003c\/p\u003e\n\n  \u003ch3\u003eInstallation and support\u003c\/h3\u003e\n  \u003cp\u003eProfessional fitting recommended. For expert installation, choose MJ Modifications in Warwickshire. Request a fitting quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003ch3\u003eGood to know\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eIf you plan to paint, apply a suitable primer first\u003c\/li\u003e\n    \u003cli\u003eProduct is vacuum-sealed and supplied with protective film\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003ePopular search terms\u003c\/h3\u003e\n  \u003cp\u003eBMW G20 rear valance, BMW 3 Series saloon rear splitter, G20 rear lower insert, BMW 3 Series body kit upgrade, G20 underbody spoiler, BMW 3 Series rear apron, G20 styling parts, Maxton Design Street Pro for G20, BMW 3 Series saloon rear aero, G20 rear blade, BMW G20 diffuser insert, BMW 3 Series sedan rear styling, G20 rear undertray, BMW saloon rear lip for G20.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eOrder your genuine Maxton Design Street Pro rear insert today from MJ Modifications and elevate the rear profile of your BMW 3 Series G20 with confidence.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Performance M","offers":[{"title":"Default Title","offer_id":55976276623746,"sku":"MAX-BM320CNC-RS1B","price":149.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/20211007151631_615f0f4fc001c__49855.1658396605.jpg?v=1763331995","url":"https:\/\/mjmodifications.co.uk\/products\/maxton-design-black-street-pro-rear-diffuser-bmw-3-g20-2018","provider":"MJ Modifications","version":"1.0","type":"link"}