![ARM Motorsports S58 Downpipes | G87 M2 · G80 M3 · M3 Competition · G82 · G83 M4 · M4 Competition G07 X7 M60i 4.4L Turbo V8 [N63] The couplers increase smoothly all](https://cdn.shopify.com/s/files/1/0635/0032/1015/files/ARMMotorsportsS58DownpipesG87M2_G80M3_M3Competition_G82_G83M4_M4Competition.png?v=1740354810)
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The couplers increase smoothly all the way up to 3
Our premium alloy improves wear resistance
and bacon fenders
Reduces cornering load differentials
ARM Motorsports S58 Downpipes | G87 M2 · G80 M3 · M3 Competition · G82 · G83 M4 · M4 Competition G07 X7 M60i 4.4L Turbo V8 [N63] The couplers increase smoothly allThe ARM S58 Downpipes increase power and torque on your S58 powered BMW while unleashing exotic sounds from your tailpipes. The ARM S58 downpipes are one of, if not the best all around hardware upgrades for the G8X platform. The ARM S58 downpipes improve throttle response throughout the RPM range while stepping up the exhaust note, all without the need to replace the entire catback system on your S58. By reducing backpressure on your S58's turbos, you
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