{"product_id":"4-inch-45-degree-mandrel-exhaust-pipe-tube-t304-stainless","title":"4 Inch 45 Degree Mandrel Exhaust Pipe Tube - T304 Stainless","description":"\u003cp\u003eIn this review of the 4 inch 45 degree mandrel exhaust pipe tube the bottom line is simple: this is a solid, no-frills stainless mandrel bend for DIY exhaust work and simple extensions. It is aimed at hobbyists and professional mechanics who need a durable 4 in OD 45 degree bend made from T-304 stainless steel. The biggest reason to buy is its material and bend quality - the T-304 construction and mandrel bend preserve flow and resist corrosion, making it a dependable piece for extending tailpipes or repairing common exhaust sections.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eT-304 stainless steel:\u003c\/strong\u003e Offers excellent resistance to corrosion and oxidation for longer life in exhaust applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 in outside diameter:\u003c\/strong\u003e Matches common 4 in exhaust systems for straightforward splicing or extension work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45 degree mandrel bend:\u003c\/strong\u003e Keeps the internal profile smooth to reduce backpressure and improve flow compared with crushed bends.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal fitment:\u003c\/strong\u003e Works with many aftermarket and replacement exhaust systems for basic repairs and custom routing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady to use:\u003c\/strong\u003e Arrives as a single, brand new mandrel bend tube ready for installation or further cutting and welding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis pipe is best suited for DIY enthusiasts doing exhaust modifications, fabricators who frequently need a standard 45 degree bend in 4 in OD tubing, and mechanics replacing or extending tailpipes where a stainless option is preferred. Its durable T-304 construction makes it useful in areas exposed to road salt and heat.\u003c\/p\u003e\n\u003cp\u003eIt is not intended for someone who needs detailed installation instructions or a full kit; the item ships as a single mandrel bend without clamps, hardware, or step-by-step guidance. Buyers who need exact custom lengths or factory-matched components may prefer a shop-fabricated solution.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-quality \u003cstrong\u003eT-304 stainless\u003c\/strong\u003e construction that resists corrosion and maintains appearance.\u003c\/li\u003e\n\u003cli\u003eMandrel-bent 45 degree angle preserves internal diameter for smoother exhaust flow.\u003c\/li\u003e\n\u003cli\u003eGood value for a raw replacement bend; customers report a polished look and solid thickness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLength tolerance had mixed feedback from customers, so final fit may require trimming or measuring before cutting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eT-304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutside diameter\u003c\/td\u003e\n\u003ctd\u003e4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBending angle\u003c\/td\u003e\n\u003ctd\u003e45 degree mandrel bend\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd-to-end length\u003c\/td\u003e\n\u003ctd\u003e20.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage contents\u003c\/td\u003e\n\u003ctd\u003e1 x mandrel bend tube pipe (brand new)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal exhaust systems \/ industrial use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 4 in 45 degree mandrel exhaust pipe is a straightforward, well-built stainless bend that suits DIY exhaust work and simple repairs. Its T-304 construction and mandrel profile give it lasting corrosion resistance and good flow characteristics, making it a practical, cost-effective part for anyone needing a 45 degree 4 in bend. Measure carefully before installation to avoid trimming surprises.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this pipe fit my 4 in exhaust?\u003c\/strong\u003e\u003cbr\u003eYes, it is a 4 in outside diameter mandrel bend designed for universal 4 in exhaust systems, but always measure actual tubing before welding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs hardware included for installation?\u003c\/strong\u003e\u003cbr\u003eNo, the package includes only the single mandrel bend tube; clamps, adapters, and welding materials are not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be welded or cut for custom length?\u003c\/strong\u003e\u003cbr\u003eYes, the T-304 stainless construction can be trimmed and welded by a professional or an experienced DIY fabricator.\u003c\/p\u003e","brand":"FGJQEFG","offers":[{"title":"Default Title","offer_id":48613015912667,"sku":"B0BMTTXM98","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51CsummtP9L._AC_SL1500_66502e1d-37ef-42de-b327-610f202d16ba.jpg?v=1778504064","url":"https:\/\/gearmusthave.com\/products\/4-inch-45-degree-mandrel-exhaust-pipe-tube-t304-stainless","provider":"GearMustHave","version":"1.0","type":"link"}