{"product_id":"stone-exhaust-volkswagen-ea888-mk7-5-golf-r-cat-back-valvetronic-exhaust","title":"Stone Exhaust Volkswagen Golf R MK7.5 EA888 Valvetronic Cat-Back Exhaust (2016+) - GP509S | Valved Catback, Plug \u0026 Play OBDII, No Drone, OPF Delete Option","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003ch2\u003eGolf 7.5 R Switchable Exhaust System | Part Number GP509S\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Unlock the sound, response and refinement your facelift 7R deserves. This premium switchable cat back replaces the factory system on the 2016 onward Golf R, delivering a deeper tone when cruising and a fierce, motorsport bark when you want it. Developed with full 3D scanning, reverse engineering and in-house dyno work, it fits like OEM, looks stunning and transforms the drive without unwanted cabin resonance.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    We have installed this system for customers at MJ Modifications in Warwickshire and the feedback is superb. Clients love the quality, the clean welds, the precise valve control and the way it stays civil with the flaps shut yet comes alive when opened. If you are searching for a Golf 7.5 R performance exhaust upgrade that is switchable via a handheld controller and delivers zero drone on the motorway, this is the one to choose.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey reasons enthusiasts pick GP509S for the 7.5R\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDesigned for the facelift Golf R with the EA888 Gen 3 turbo engine for exact fitment\u003c\/li\u003e\n    \u003cli\u003eTwin electrically operated valves with ON, OFF and AUTO modes using the included remote\u003c\/li\u003e\n    \u003cli\u003ePlug-in OBD2 control for quick, tidy installation with no splicing\u003c\/li\u003e\n    \u003cli\u003eSingle-piece flow path for maximised gas speed and strength\u003c\/li\u003e\n    \u003cli\u003eDrone-free cruising and a refined tone in Comfort mode\u003c\/li\u003e\n    \u003cli\u003eDeveloped using 3D scanning, simulation and confirmed on the dyno\u003c\/li\u003e\n    \u003cli\u003ePrecision mechanical welding for durability and leak-free performance\u003c\/li\u003e\n    \u003cli\u003eDistinctive sound profile that suits daily use and spirited driving\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eValve control, your way\u003c\/h3\u003e\n  \u003cp\u003e\n    Choose quiet, loud or intelligent. Use the remote to select:\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eON for an aggressive, open-valve soundtrack\u003c\/li\u003e\n    \u003cli\u003eOFF for a discreet, neighbour-friendly drive\u003c\/li\u003e\n    \u003cli\u003eAUTO to let the system open and close at the RPM you set\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    The controller plugs into the OBD port for a clean, reversible install in minutes. No coding required for operation of the valves.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eOPF and GPF compatible\u003c\/h3\u003e\n  \u003cp\u003e\n    Running a particulate filter equipped car. An OPF delete option is available at no extra cost so you can fit this cat back on OPF vehicles without triggering a warning. No ECU coding to remove fault lights is needed.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eEngineered to perform\u003c\/h3\u003e\n  \u003cp\u003e\n    The OEM system is fully 3D scanned to capture routing, bends and diameters. Engineers then optimise gas flow, heat management and pressure zones with digital simulation. Tube work is formed on a 7-axis CNC bender to achieve up to 98 percent roundness with accuracy under 0.025 mm, cutting turbulence and helping prevent stress cracks. Crisscross and overlapping welds plus direct spot welding reinforce high temperature areas for long-term reliability.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eDyno-proven results\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePower gain: +12.7 Ps at 0 rpm\u003c\/li\u003e\n    \u003cli\u003eTorque gain: +44.12 Nm at 0 rpm\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat is included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eGolf 7.5 R cat back exhaust assembly with valve control\u003c\/li\u003e\n    \u003cli\u003eRemote handset with ON, OFF and AUTO functions\u003c\/li\u003e\n    \u003cli\u003ePlug-in OBD2 control module\u003c\/li\u003e\n    \u003cli\u003eOPF delete option supplied free of charge for OPF equipped cars\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFitment\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2016 onward Golf R facelift models with the EA888 engine\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation and support\u003c\/h3\u003e\n  \u003cp\u003e\n    Want it fitted by specialists. Book your install with MJ Modifications in Warwickshire. Request a quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\n  \u003c\/p\u003e\n\n  \u003ch3\u003ePart number and warranty\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart number: GP509S\u003c\/li\u003e\n    \u003cli\u003eManufacturer warranty: 2 years\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eReal-world praise\u003c\/h3\u003e\n  \u003cp\u003e\n    Our customers consistently report excellent build quality, precise fitment and a best-of-both-worlds character. Calm when commuting, wild on back roads, and no intrusive boom in the cabin.\n  \u003c\/p\u003e\n\n  \u003ch3\u003ePopular search phrases\u003c\/h3\u003e\n  \u003cp\u003e\n    Golf 7.5 R switchable exhaust UK, MK7.5 R performance cat back, 7R facelift valve controlled exhaust, remote valve exhaust Golf R, Golf R flap exhaust, Golf R OBD2 valve controller, Golf R GPF back exhaust, drone free exhaust Golf R, Golf R stainless cat back system, EA888 Gen 3 R exhaust upgrade, Golf R 2016 2017 2018 2019 exhaust, UK Golf R sports exhaust, plug in valve control exhaust, GP509S Golf R, OPF removal solution Golf R.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"margin: 20px 0;\"\u003e\n    \u003ciframe width=\"100%\" height=\"480\" src=\"https:\/\/www.youtube.com\/embed\/V5c4VEyO1EM\" title=\"Valved System Installation Overview\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"margin-top: 20px;\"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/1_9336c8b0-c9ea-4822-891c-83490f630707.jpg?v=1572705528\" alt=\"3D scanning and reverse engineering for Golf 7.5 R exhaust\" style=\"max-width:100%; height:auto;\"\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"margin-top: 20px;\"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/S__53968900_600x600.jpg?v=1591014788\" alt=\"Remote valve controller for Golf R 7.5\" style=\"max-width:100%; height:auto;\"\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"margin-top: 20px;\"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/bending.jpg?v=1572739395\" alt=\"7-axis CNC bending for precise pipework\" style=\"max-width:100%; height:auto;\"\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"margin-top: 20px;\"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_1_1024x1024.jpg?v=1572828150\" alt=\"High quality welding for reliability\" style=\"max-width:100%; height:auto;\"\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Stone Exhaust","offers":[{"title":"Slant Cut Gloss Carbon Fiber (100mm)","offer_id":56006642631042,"sku":null,"price":2741.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/Stone_Exhaust_Slant_Cut_Gloss_Caron_Fibre_80mm_Exhaust_Tailpipe_1946x_aafede1c-6ef8-49b7-a1ab-ac45e94782aa.png?v=1764059559","url":"https:\/\/mjmodifications.co.uk\/products\/stone-exhaust-volkswagen-ea888-mk7-5-golf-r-cat-back-valvetronic-exhaust","provider":"MJ Modifications","version":"1.0","type":"link"}