{"product_id":"2013-2018-cummins-4-inch-downpipe-back","title":"2013-2018 Cummins 4 inch downpipe back exhaust","description":"\u003cp\u003eThe 2013-2018 Cummins 4 inch downpipe back exhaust system delivers maximum flow and performance for your diesel engine. This complete solution replaces restrictive factory components with mandrel-bent tubing that reduces backpressure and improves horsepower and torque output. The 4 inch diameter accommodates aggressive tuning while maintaining durability under heavy loads. Engineered for Cummins specifications, this system integrates seamlessly from the turbo outlet through the rear axle. Ideal for trucks prioritizing power gains and towing capability. OFFROAD USE ONLY\u003c\/p\u003e","brand":"Twisted Pistons","offers":[{"title":"Default Title","offer_id":41999315697739,"sku":null,"price":578.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0646\/4464\/4939\/files\/13-18CUMMINS4INCHEXHAUST.webp?v=1766981239","url":"https:\/\/twistedpistonsdiesel.com\/products\/2013-2018-cummins-4-inch-downpipe-back","provider":"Twisted Pistons","version":"1.0","type":"link"}