{"product_id":"arm-motorsports-3-catted-downpipe-with-ss304-stainless","title":"ARM Motorsports 3\" Catted Downpipe with SS304 Stainless","description":"The ARM S55 Catted Downpipes are engineered as the ultimate solution for enhancing power, throttle response, and exhaust note in your S55-powered F8X vehicle. These downpipes are crucial for safely pushing your S55 engine beyond basic Stage 1 tuning, as higher boost levels in Stage 2 and up tunes can cause increased back-pressure at the OEM catalysts, potentially stressing the turbochargers.\n\nConstructed from SS304 Stainless Steel with a 3\" diameter inlet and a 2.5\" exit, these downpipes feature a smooth, gradual transition to optimize exhaust flow and prevent turbulence often caused by abrupt reducers found in other aftermarket options. The inclusion of two 200-cell catalysts helps reduce emissions and exhaust odor. ARM Motorsports claims these downpipes can provide up to a +30whp \/ 30wtq gain, improve turbo spool, and reduce back-pressure.\n\nInstallation involves bolting directly to the OEM mid-pipes, requiring a reduction to meet their 2.5\" size. The product includes a CNC machined bracket for the front-turbo downpipe and necessary hardware for mid-pipe connection. ARM Motorsports backs these downpipes with a 30-day money-back guarantee and a lifetime free-replacement warranty.\n\nThey are compatible with the BMW F80 M3, F82 M4, F83 M4, and F87 M2 Competition, all equipped with the S55 3.0L engine.","brand":"ARM","offers":[{"title":"Default Title","offer_id":52687213199672,"sku":"S55DP","price":447.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/660681190.webp?v=1784881449","url":"https:\/\/store.motormia.co\/products\/arm-motorsports-3-catted-downpipe-with-ss304-stainless","provider":"MOTORMIA","version":"1.0","type":"link"}