Name: BMW B58 Downpipe – Gen 2 Catless, Direct OEM Fit
SKU: ESP-B58-DP-G2
Price: 550.00 AUD
Availability: InStock

BMW B58 Downpipe – Gen 2 Catless, Direct OEM Fit

$550.00

or 4 interest-free payments of $137.50 with afterpayⓘ

BMW B58 Gen 2 catless downpipe for M340i, M440i, M240i, X5 40i, Z4 M40i and A90 Supra. Direct OEM fit, RHD + LHD compatible. Lifetime warranty. Professional install required. Supporting modifications required. Off-road / motorsport use only.

In Stock— Ships in 1–2 weeks

SKU: ESP-B58-DP-G2 Categories: B58 Gen 2, Downpipes Tag: B58

Fast AU ShippingFree over $250

30-Day ReturnsUnused, undamaged

OEM FitmentBolts to factory

Fast dispatch, Australia-wide

In-stock parts leave us within 1–2 business days. Built-to-order items ship within the lead time shown above — never longer than a couple of weeks. Every order ships tracked, and shipping is free over $250.

Fitment guarantee

This is a platform-specific part — engineered for your exact BMW chassis, not universal-fit guesswork. Check the fitment grid below, and if you’re ever unsure, email info@eurospecau.com with your VIN before you buy and we’ll confirm it fits.

The BMW B58 downpipe upgrade for Gen 2 motors (B58TU1) is the most cost-effective performance modification available for the platform. Our B58 downpipe fits the G20/G22/G26 M340i & M440i, F22/G42 M240i, G05 X5 40i, G29 Z4 M40i and the A90 Toyota Supra.

By removing the restrictive factory catalytic converter, this BMW B58 downpipe dramatically reduces back-pressure — the turbo spools faster, throttle response sharpens, and mid-range torque steps up. The change is felt from the very first pull.

Built from 304 stainless steel with smooth radius mandrel bends to minimise turbulence and maximise flow. CNC-machined billet flange delivers a true leak-free seal. Designed for direct OEM fitment with full RHD and LHD compatibility — bolts straight to the factory cat-back.

Pair this BMW B58 downpipe with a Stage 2 tune (MHD, Bootmod3 or Ecutek) and expect +25–30hp at the wheels.

Backed by our Lifetime Warranty. Bolts up to factory exhaust. Off-road use only.

Real-world dyno results

Stock vs Stage 1, Stage 2 and Stage 2+ tunes — all runs with the EuroSpec catless downpipe installed. Up to +491 WHP and +731 NM on the Stage 2+ tune.