{"product_id":"dna-motoring-3-0-stainless-steel-mandrel-bent-exhaust-tubing-kit-16-piece-universal-18-gauge-slide-on-ends","title":"DNA MOTORING 3.0\" Stainless Steel Mandrel-Bent Exhaust Tubing Kit — 16-Piece Universal 18-Gauge, Slide-On Ends","description":"\u003cp\u003e\u003cstrong\u003eDNA MOTORING ZTL-30SS is a 16-piece 3.0-inch stainless steel mandrel-bent exhaust tubing kit designed for DIY custom exhaust builds on cars, motorcycles, ATVs and fabrication projects.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis universal kit contains a balanced assortment of straight, 45°, 90° and 180° U-bend sections, all with 3.0\" outer diameter and 18-gauge walls. Each pipe is mandrel bent to maintain consistent internal diameter through bends, reducing flow restrictions and making it easier to assemble a smooth, straight-through exhaust route or compact routed systems. The slide-on terminals simplify fitment for hobbyists, fabricators and home mechanics who want a flexible set of components without cutting and welding an entire custom-mandrel shop setup.\u003c\/p\u003e\n\n\u003ch3\u003eWhat pieces are included and how do they fit together?\u003c\/h3\u003e\n\u003cp\u003eThe ZTL-30SS kit includes 4 straight sections, 4 forty-five degree bends, 4 ninety degree bends and 4 180 degree U-bends — sixteen pieces total. All sections share a uniform 3.0\" outer diameter so they can be mated directly for many configurations using clamps or welding as preferred.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4× straight pipes for length and extension\u003c\/li\u003e\n  \u003cli\u003e4× 45° bends for gradual directional changes\u003c\/li\u003e\n  \u003cli\u003e4× 90° bends for sharper routing around obstacles\u003c\/li\u003e\n  \u003cli\u003e4× 180° U-bends for tight returns and compact layouts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the stainless steel mandrel-bend construction help performance?\u003c\/h3\u003e\n\u003cp\u003eMandrel bending preserves the tube's internal diameter through curves, avoiding the necking that can occur with crush-bent pipes. That smoother internal contour promotes steadier exhaust gas flow and reduces turbulence compared with non-mandrel bends, which is useful when building performance-inspired or efficient exhaust paths.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e18-gauge stainless steel resists corrosion while remaining workable\u003c\/li\u003e\n  \u003cli\u003eMandrel bends keep a consistent bore through elbow sections\u003c\/li\u003e\n  \u003cli\u003eSmoother flow reduces hotspots where restrictions can form\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is this kit to install and adapt for different vehicles?\u003c\/h3\u003e\n\u003cp\u003eThe slide-on terminal design enables quick mock-ups and temporary fits without immediate welding, letting you test routing before final assembly. For permanent installations you can clamp and weld, or use couplers; the uniform 3.0\" OD makes selecting joining hardware straightforward.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSlide-on ends for rapid alignment and fit checking\u003c\/li\u003e\n  \u003cli\u003eUniversal 3.0\" OD fits common mufflers, tips and couplers\u003c\/li\u003e\n  \u003cli\u003eSuitable for welding, band clamps, V-band adapters, or silicone couplers with reducers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are typical uses and limitations of this DIY exhaust kit?\u003c\/h3\u003e\n\u003cp\u003eThis kit is ideal for custom routing, mock-ups, small fabrication tasks and repairs where a 3.0\" diameter is appropriate. It is not a complete system (no mufflers, hardware or flanges included), so finishers should plan to add clamps, gaskets or welding and any vehicle-specific adapters required for sensors and mounting points.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGreat for custom muffler connections, mid-pipes and motorcycle projects\u003c\/li\u003e\n  \u003cli\u003eNot a bolt-on complete system — additional parts may be required\u003c\/li\u003e\n  \u003cli\u003eCheck fitment for oxygen sensors, mounting brackets and clearance points\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The DNA MOTORING ZTL-30SS kit suits home mechanics, fabricators, hobbyists and small shops that need a flexible set of mandrel-bent 3.0\" tubing for prototype assemblies or custom exhaust work. If you want durable stainless sections with consistent internal geometry for cleaner routing and easier fabrication, this kit offers a practical, affordable starting point — but plan to supply clamps, welding or adapters for a finished installation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this kit ready to bolt on my car?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No, it’s a universal tubing kit; you’ll likely need clamps, adapters, flanges or welding to match vehicle-specific mounts and sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What material and wall thickness are these pipes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The pipes are stainless steel with an 18-gauge wall and a 3.0\" outer diameter.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"DNA MOTORING","offers":[{"title":"Default Title","offer_id":48082757025950,"sku":"B0BF9ZJYVX","price":315.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/dna-motoring-front-packaging.jpg?v=1785813261","url":"https:\/\/northtrailauto.ca\/products\/dna-motoring-3-0-stainless-steel-mandrel-bent-exhaust-tubing-kit-16-piece-universal-18-gauge-slide-on-ends","provider":"North Trail Auto","version":"1.0","type":"link"}