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• 2015-2019 F20/F21 B38 BMW 116i
ARM S55 FBO KIT
We ran these back to back in 5th gear
Up to 13WHP gains
ARM BMW 240i/340i/440i B58 Midpipe Upgrade Audi rs5 valvetronic exhaust • 2015-2019 F20/F21 B38 BMWHIGHLIGHTS Improved Exhaust Note Lighter Than OEM Maintains OEM Muffler SS304 Stainless Steel Smooth Mandrel Bent Tubing PROFILE The ARM B58 Midpipe significantly improves the sound of your B58, giving it the aggressive exhaust note you're looking for from a tuned B58 powered BMW. Designed to amplify the power and sound of your B58, the ARM B58 Midpipe eliminates the two central resonators found in the stock midpipe. By retaining the OEM muffler you
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