{"product_id":"dinan-dnnd660-0099-blk-valved-cat-back-exhaust-system-with-black-tips","title":"Dinan dnnD660-0099-BLK Valved Cat-Back Exhaust System with Black Tips","description":"While looks are important, the auditory advantages are what any enthusiast is truly after with an exhaust system, and the Dinan offering for the G01\/G02 M40i platform delivers in spades. For not only aural enhancement via the elimination of the central collector\/resonator, but also weight savings and simplicity. The stock single-to-dual pipe setup has been abandoned in favor of an enlarged, straight, unrestricted, and freer flowing single pipe system. This pathway feeds into a Helmholtz equipped muffler that limits frequencies associated with drone, as well as assists in altering the overall tone of the setup to deliver the signature low Dinan rumble. The no-nonsense design allows versatility in volume levels with the retained factory valve functionality. Go from refined when cruising (low RPM’s) to rowdy when in it (high RPM’s), with ease. Or better yet, pair the system with an exhaust valve remote and have full control of elevating or reducing the sound! When open, the system behaves as a straight pipe solution that promotes maximum flow and volume for an exhilarating and forceful chorus. When the valve is closed however, exhaust gases are wholly redirected through the muffler and emit more tempered vocals acceptable for even the most sensitive ears. It is the perfect blend of civility when cruising or the full spectrum of auditory delight when in the throttle.  No matter the situation, the Dinan valved cat-back exhaust system is the answer for the discerning enthusiast looking for sound without sacrifice.\nStainless Steel - Black Tips - G01\/G02\n\u003cul\u003e\n  \u003cli\u003eFactory-like fitment with included mounting hardware and valve componentry for both pre-LCI and LCI compatibility\u003c\/li\u003e\n  \u003cli\u003eQuad 3.75-inch (95mm) double-walled, black ceramic coated, clamp-on tips with laser engraved Dinan logo\u003c\/li\u003e\n  \u003cli\u003eFactory valve functionality retained; refined or rowdy from the same exhaust\u003c\/li\u003e\n  \u003cli\u003e7-pounds lighter than the stock system (60-pounds vs. Dinan: 53-pounds)\u003c\/li\u003e\n  \u003cli\u003eEnjoyably louder, sportier sound w\/ a delightful octave drop\u003c\/li\u003e\n  \u003cli\u003eDrone abatement technologies used to reduce cabin resonance\u003c\/li\u003e\n  \u003cli\u003eLarger diameter piping for increased flow (83mm vs. 80mm)\u003c\/li\u003e\n  \u003cli\u003eFactory resonator\/collector removed for increased volume\u003c\/li\u003e\n  \u003cli\u003eDirect bolt-on w\/ no cutting or welding required\u003c\/li\u003e\n  \u003cli\u003eMaximum gains of +6 HP and +5 lb-ft of torque\u003c\/li\u003e\n  \u003cli\u003e100% 304 Stainless Steel construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBrief Description:\u003c\/strong\u003e The Dinan dnnD660-0099-BLK valved cat-back exhaust system is designed for BMW X3 M40i and X4 M40i models using the G01\/G02 platform. This stainless steel system removes the factory resonator\/collector and replaces the stock single-to-dual arrangement with an enlarged, straight, freer-flowing single-pipe design. A Helmholtz-equipped muffler helps reduce drone while delivering a deeper Dinan exhaust tone.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Performance Benefits:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eValved Sound Control:\u003c\/strong\u003e Retains factory valve functionality for a refined cruising sound or a louder, sportier tone under acceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Exhaust Flow:\u003c\/strong\u003e Larger-diameter piping and the removal of the factory resonator\/collector support increased flow, with claimed maximum gains of 6 HP and 5 lb-ft of torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Cabin Resonance:\u003c\/strong\u003e Helmholtz-based drone abatement technology helps limit unwanted exhaust frequencies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight Savings:\u003c\/strong\u003e The system weighs 53 pounds, which is 7 pounds lighter than the 60-pound stock system.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eKey Product Specifications \u0026amp; Technical Data:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Dinan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e dnnD660-0099-BLK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e BMW X3 M40i\/X4 M40i G01\/G02 platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Valved cat-back exhaust system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 100% 304 stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Configuration:\u003c\/strong\u003e Quad 3.75-inch double-walled black ceramic-coated clamp-on tips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiping Diameter:\u003c\/strong\u003e 83 mm, compared with the factory 80 mm piping\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Direct bolt-on design with no cutting or welding required\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included in the Box:\u003c\/strong\u003e The product data states that mounting hardware and valve componentry are included for pre-LCI and LCI compatibility. The shipment consists of two boxes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Fits 2018-2023 BMW X3 models and 2019-2022 BMW X4 models as listed, including BMW X3 M40i and X4 M40i applications on the G01\/G02 platform.\u003c\/p\u003e\u003cbr\u003e\nFitments:\u003cbr\u003e\n2018 BMW X3 M40i\u003cbr\u003e\n2019 BMW X3 M40i\u003cbr\u003e\n2019 BMW X4 M40i\u003cbr\u003e\n2020 BMW X3 M40i\u003cbr\u003e\n2020 BMW X4 M40i\u003cbr\u003e\n2021 BMW X3 M40i\u003cbr\u003e\n2021 BMW X4 M40i\u003cbr\u003e\n2022 BMW X3 M40i\u003cbr\u003e\n2022 BMW X4 M40i\u003cbr\u003e\n2023 BMW X3 M40i\u003cbr\u003e\n2023 BMW X4 M40i\u003cbr\u003e\n2024 BMW X3 M40i\u003cbr\u003e\n2024 BMW X4 M40i\u003cbr\u003e\n2025 BMW X4 M40i\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNumber Of Boxes: 2\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":68100392714492,"sku":"D660-0099-BLK","price":2158.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/82e99c85da50201772899b2049c01be2L.jpg?v=1794277534","url":"https:\/\/diycustoms.store\/products\/dinan-dnnd660-0099-blk-valved-cat-back-exhaust-system-with-black-tips","provider":"diycustoms.store","version":"1.0","type":"link"}