BMW F80 M3 & F82 M4 2015-2020 Axleback Exhaust Proto Type R&D
Posted by Top Speed Pro-1 on 18th Nov 2020
We developed a new axleback exhaust with built in resonators for BMW F80 M3 & F82 M4, most straight through chamber design exhaust tends to have cabin drone sound under 3000 RPM during highway cruisin
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