{"product_id":"boost-products-exhaust-flex-pipe-interlock-304-stainless-weld-on","title":"BOOST Products Exhaust Flex Pipe Section Interlock 304 Stainless Weld-On - 1.5\" to 4\"","description":"\u003cp\u003e\u003cstrong\u003eAdd some movement to a custom exhaust or downpipe without putting all that stress into the welds, turbo flange or exhaust manifold.\u003c\/strong\u003e This weld-in flex pipe from BOOST Products uses a four-layer stainless steel design with an interlock liner that keeps the inside of the pipe smooth while still allowing the exhaust to move as the engine shifts and the piping expands from heat.\u003c\/p\u003e\n\u003cp\u003eThe entire flex section is made from 304 stainless steel, including the gas-tight spiral wall and internal reinforcement. It can be used in naturally aspirated exhaust systems, high-horsepower turbo builds and supercharged applications. It can also handle the heat of being installed in a downpipe close to the turbocharger.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eFitment Information\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal weld-in exhaust fabrication component\u003c\/li\u003e\n\u003cli\u003eCustom exhaust systems\u003c\/li\u003e\n\u003cli\u003eTurbocharger downpipes\u003c\/li\u003e\n\u003cli\u003eWastegate and exhaust dump pipes\u003c\/li\u003e\n\u003cli\u003eNaturally aspirated, turbocharged and supercharged applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eFitment Note\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a weld-in fabrication part, not a clamp-on exhaust repair sleeve. Match the outside diameter of the flex pipe to the outside diameter of your exhaust tubing.\u003c\/p\u003e\n\u003cp\u003eMake sure there is enough room for the selected overall length and that the flex section is installed without being stretched, compressed or forced out of alignment.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eAvailable Sizes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e38mm outer diameter, approximately 1.5\" x 90mm long, approximately 3.54\"\u003c\/li\u003e\n\u003cli\u003e45mm outer diameter, approximately 1.75\" x 90mm long, approximately 3.54\"\u003c\/li\u003e\n\u003cli\u003e51mm outer diameter, approximately 2\" x 100mm long, approximately 3.94\"\u003c\/li\u003e\n\u003cli\u003e51mm outer diameter, approximately 2\" x 150mm long, approximately 5.91\"\u003c\/li\u003e\n\u003cli\u003e60mm outer diameter, approximately 2.36\" x 100mm long, approximately 3.94\"\u003c\/li\u003e\n\u003cli\u003e60mm outer diameter, approximately 2.36\" x 150mm long, approximately 5.91\"\u003c\/li\u003e\n\u003cli\u003e63.5mm outer diameter, approximately 2.5\" x 100mm long, approximately 3.94\"\u003c\/li\u003e\n\u003cli\u003e63.5mm outer diameter, approximately 2.5\" x 150mm long, approximately 5.91\"\u003c\/li\u003e\n\u003cli\u003e70mm outer diameter, approximately 2.75\" x 100mm long, approximately 3.94\"\u003c\/li\u003e\n\u003cli\u003e70mm outer diameter, approximately 2.75\" x 150mm long, approximately 5.91\"\u003c\/li\u003e\n\u003cli\u003e76mm outer diameter, approximately 3\" x 100mm long, approximately 3.94\"\u003c\/li\u003e\n\u003cli\u003e76mm outer diameter, approximately 3\" x 150mm long, approximately 5.91\"\u003c\/li\u003e\n\u003cli\u003e89mm outer diameter, approximately 3.5\" x 100mm long, approximately 3.94\"\u003c\/li\u003e\n\u003cli\u003e89mm outer diameter, approximately 3.5\" x 150mm long, approximately 5.91\"\u003c\/li\u003e\n\u003cli\u003e102mm outer diameter, approximately 4\" x 100mm long, approximately 3.94\"\u003c\/li\u003e\n\u003cli\u003e102mm outer diameter, approximately 4\" x 150mm long, approximately 5.91\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eSpecs and Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWeld-in exhaust flex pipe\u003c\/li\u003e\n\u003cli\u003e100% 304 stainless steel construction\u003c\/li\u003e\n\u003cli\u003eFour-layer construction\u003c\/li\u003e\n\u003cli\u003eContinuous interlock inner liner\u003c\/li\u003e\n\u003cli\u003eGas-tight spiral wall\u003c\/li\u003e\n\u003cli\u003eSmooth internal exhaust path\u003c\/li\u003e\n\u003cli\u003eFlexible while remaining stable under load\u003c\/li\u003e\n\u003cli\u003eBuilt to handle high exhaust temperatures\u003c\/li\u003e\n\u003cli\u003eSuitable for turbo and supercharger builds\u003c\/li\u003e\n\u003cli\u003eCan be installed in a downpipe after the turbocharger\u003c\/li\u003e\n\u003cli\u003eAvailable in diameters from approximately 1.5\" to 4\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eWhy Use an Interlock Flex Pipe?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eEngine movement and heat expansion can put a lot of stress into a rigid exhaust system, especially when the exhaust is mounted directly to a turbocharger. Adding a flex section gives the piping room to move and helps reduce the load placed on welds, flanges, manifolds and turbo housings.\u003c\/p\u003e\n\u003cp\u003eThe interlock liner also gives the inside of the flex pipe a smoother path than an exposed braided flex section. That makes it a good choice for higher-flow exhaust systems where durability and clean exhaust flow both matter.\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBOOST Products includes a five-year warranty in addition to the applicable legal guarantee. Warranty claims are handled directly through BOOST Products GmbH in Germany.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eBefore You Buy\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the outside diameter of your exhaust tubing.\u003c\/li\u003e\n\u003cli\u003eConfirm the available installation space and required flex-pipe length.\u003c\/li\u003e\n\u003cli\u003eThis part requires welding and custom fabrication.\u003c\/li\u003e\n\u003cli\u003eDo not install the flex section in a stretched, compressed or misaligned position.\u003c\/li\u003e\n\u003cli\u003eProduct photos may show a different size, so the proportions can vary between options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003ePairs Well With\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/shop.redline360.com\/products\/pie-cut-with-spigot-super-tight-radius-15-stainless-steel\"\u003eBOOST Products 15° Stainless Steel Pie Cuts with Spigots\u003c\/a\u003e – Build tight exhaust and downpipe bends when a normal mandrel bend takes up too much room.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/shop.redline360.com\/products\/boost-products-heat-resistant-silicone-exhaust-hangers\"\u003eBOOST Products Heat-Resistant Exhaust Hangers\u003c\/a\u003e – Support the exhaust while still giving the system enough movement to work properly with the flex section.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/shop.redline360.com\/products\/vibrant-performance-aluminum-v-band-flange-assembly\"\u003eVibrant Performance V-Band Flange Assembly\u003c\/a\u003e – Add a removable connection to a custom exhaust or downpipe so sections can be separated for service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eAbout BOOST Products\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBOOST Products makes exhaust, intercooler, intake and fluid-system fabrication parts for custom street and motorsport builds. Its catalog covers everything from stainless exhaust components and titanium piping to silicone hoses, clamps, heat protection and turbocharger accessories.\u003c\/p\u003e","brand":"BOOST Products USA","offers":[{"title":"1.5\" (38mm) OD, 3.5\" (89mm) length","offer_id":43047339163728,"sku":"2804380901","price":24.67,"currency_code":"USD","in_stock":true},{"title":"1.75\" (45mm) OD, 3.5\" (89mm) length","offer_id":43047339196496,"sku":"2804450901","price":25.78,"currency_code":"USD","in_stock":true},{"title":"2\" (51mm) OD, 4\" (100mm) length","offer_id":43047339229264,"sku":"2804511001","price":28.44,"currency_code":"USD","in_stock":true},{"title":"2\" (51mm) OD, 6\" (150mm) length","offer_id":43047339262032,"sku":"2804511501","price":30.32,"currency_code":"USD","in_stock":true},{"title":"2.36\" (60mm) OD, 4\" (102mm) length","offer_id":43047339294800,"sku":"2804601001","price":31.61,"currency_code":"USD","in_stock":true},{"title":"2.36\" (60mm) OD, 6\" (150mm) length","offer_id":43047339327568,"sku":"2804601501","price":40.94,"currency_code":"USD","in_stock":true},{"title":"2.5\" (63.5mm) OD, 4\" (102mm) length","offer_id":43047339360336,"sku":"2804631001","price":33.4,"currency_code":"USD","in_stock":true},{"title":"2.5\" (63.5mm) OD, 6\" (150mm) length","offer_id":43047339393104,"sku":"2804631501","price":40.43,"currency_code":"USD","in_stock":true},{"title":"2.75\" (70mm) OD, 4\" (102mm) length","offer_id":43047339425872,"sku":"2804701001","price":32.8,"currency_code":"USD","in_stock":true},{"title":"2.75\" (70mm) OD, 6\" (150mm) length","offer_id":43047339458640,"sku":"2804701501","price":43.51,"currency_code":"USD","in_stock":true},{"title":"3\" (76mm) OD, 4\" (102mm) length","offer_id":43047339491408,"sku":"2804761001","price":40.86,"currency_code":"USD","in_stock":true},{"title":"3\" (76mm) OD, 6\" (150mm) length","offer_id":43047339524176,"sku":"2804761501","price":45.57,"currency_code":"USD","in_stock":true},{"title":"3.5\" (89mm) OD, 4\" (102mm) length","offer_id":43047339556944,"sku":"2804891001","price":61.67,"currency_code":"USD","in_stock":true},{"title":"3.5\" (89mm) OD, 6\" (150mm) length","offer_id":43047339589712,"sku":"2804891501","price":68.52,"currency_code":"USD","in_stock":true},{"title":"4\" (102mm) OD, 4\" (102mm) Length","offer_id":43047339622480,"sku":"2804101001","price":66.55,"currency_code":"USD","in_stock":true},{"title":"4\" (102mm) OD, 6\" (150mm) length","offer_id":43047339655248,"sku":"2804101501","price":73.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0058\/0252\/4785\/files\/boost-products-exhaust-flex-pipe-interlock-304-stainless-weld-on.jpg?v=1792606935","url":"https:\/\/shop.redline360.com\/products\/boost-products-exhaust-flex-pipe-interlock-304-stainless-weld-on","provider":"Redline360","version":"1.0","type":"link"}