OEM S58 turbo downpipes are equipped with restrictive pre‑catalyst and OPF particulate filter, creating high exhaust back‑pressure, slowing turbo spool and muting the factory exhaust note. One side is fitted with multi‑layer flex bellow to absorb engine vibration and thermal expansion to avoid weld cracking. Pre‑tapped OEM‑position bungs for O2 oxygen sensor & exhaust temperature sensor. Precision CNC‑machined flanges ensure leak‑proof connection. 100% bolt‑on direct replacement, no cutting or modification. Works with stock or aftermarket mid‑pipe / cat‑back exhaust. Fits OPF & Non‑OPF S58 vehicles, supports LHD & RHD.

Fitment

‑ Engine：BMW S58 3.0L Twin‑Turbo Inline‑6

‑ Models & Year：

M3 G80 Sedan | M4 G82 Coupe / G83 Convertible | 2021‑Up

M2 G87 | 2023‑Up

‑ Note：Fit both OPF & Non‑OPF S58. Not for old F8X S55 engine. Confirm chassis code before placing order.

✅ CNC laser‑cut turbo flanges & V‑band outlet flanges for leak‑tight connection

✅ Full professional TIG leak‑proof welding for long‑term high‑temperature durability

✅ 100% bolt‑on OEM‑position direct replacement, no cutting or fabrication work

✅ Works with stock or aftermarket mid‑pipe / cat‑back exhaust; LHD & RHD compatible

✅ Complete installation hardware kit: gaskets, V‑band clamps