Boosted Engineering
BMW B58 Downpipe (G Series) - Boosted Engineering
SKU: BE-DP-B58G-1
$499.99
Not sure it fits your car? Call +61 461 324 537Increase power, improve turbo response and reduce exhaust backpressure with the Boosted Engineering B58 High Flow Downpipe for G Series BMWs and the MkV Supra.
Designed for Gen 1, Gen 2 and Gen 3 B58 engines, this upgrade improves exhaust flow and turbocharger efficiency while helping reduce exhaust gas temperatures under load. When paired with appropriate tuning, improved cruising efficiency may also be achieved under light throttle.
Suitable for stock turbo and upgraded turbo applications.
Options
- Catless – maximum flow for tuned and motorsport cars
- High Flow Catalytic Converter – a cleaner, less raspy note while still flowing far better than stock
- Heat shield (optional) – helps keep heat away from surrounding components
Benefits
- Increased power and torque
- Improved turbo response and spool
- Reduced exhaust backpressure
- Lower exhaust gas temperatures
- Enhanced exhaust sound
Construction
- High flow stainless steel design
- Precision TIG welded assembly
- Direct bolt-on fitment
Tuning Information
ECU calibration is strongly recommended following installation to maximise performance, drivability and reliability.
Fitment – G Series B58
- BMW M240i (G42) – Gen 2
- BMW M340i (G20 / G21) 2019–2024 – Gen 2 · 2025+ – Gen 3
- BMW M440i (G22 / G23 / G26) 2020–2024 – Gen 2 · 2025+ – Gen 3
- BMW 540i (G30 / G31) Pre-LCI 2017–2019 – Gen 1 · LCI 2020–2023 – Gen 2
- BMW 640i GT (G32) Pre-LCI 2017–2019 – Gen 1 · LCI 2020–2023 – Gen 2
- BMW 740i (G11 / G12) Pre-LCI 2015–2019 – Gen 1 · LCI 2019–2022 – Gen 2
- BMW 840i (G14 / G15 / G16) – Gen 2
- BMW X3 M40i (G01) – Gen 2
- BMW X4 M40i (G02) – Gen 2
- BMW X5 xDrive40i (G05) 2019–2023 – Gen 2 · 2024+ – Gen 3
- BMW X6 xDrive40i (G06) 2020–2023 – Gen 2 · 2024+ – Gen 3
- BMW X7 xDrive40i (G07) 2019–2022 – Gen 2 · 2023+ – Gen 3
- BMW Z4 M40i (G29) 2019+ – Gen 2
- Toyota Supra MkV 3.0 (A90 / A91) – Gen 2
B58 models only. For F Series M140i, M240i, 340i and 440i, see our B58 Downpipe (F Series).
Not sure? Choose "Not sure – we'll confirm" and we'll check your VIN before dispatch.
Important Information
This product is intended for high performance applications. Professional installation is recommended.
Part numbers
OptionSKU
M240i (G42) – Gen 2 / Catless / No heat shieldBE-DP-B58G-1
M240i (G42) – Gen 2 / Catless / Add heat shieldBE-DP-B58G-2
M240i (G42) – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-3
M240i (G42) – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-4
M340i (G20/G21) 2019–2024 – Gen 2 / Catless / No heat shieldBE-DP-B58G-5
M340i (G20/G21) 2019–2024 – Gen 2 / Catless / Add heat shieldBE-DP-B58G-6
M340i (G20/G21) 2019–2024 – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-7
M340i (G20/G21) 2019–2024 – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-8
M340i (G20/G21) 2025+ – Gen 3 / Catless / No heat shieldBE-DP-B58G-9
M340i (G20/G21) 2025+ – Gen 3 / Catless / Add heat shieldBE-DP-B58G-10
M340i (G20/G21) 2025+ – Gen 3 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-11
M340i (G20/G21) 2025+ – Gen 3 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-12
M440i (G22/G23/G26) 2020–2024 – Gen 2 / Catless / No heat shieldBE-DP-B58G-13
M440i (G22/G23/G26) 2020–2024 – Gen 2 / Catless / Add heat shieldBE-DP-B58G-14
M440i (G22/G23/G26) 2020–2024 – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-15
M440i (G22/G23/G26) 2020–2024 – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-16
M440i (G22/G23/G26) 2025+ – Gen 3 / Catless / No heat shieldBE-DP-B58G-17
M440i (G22/G23/G26) 2025+ – Gen 3 / Catless / Add heat shieldBE-DP-B58G-18
M440i (G22/G23/G26) 2025+ – Gen 3 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-19
M440i (G22/G23/G26) 2025+ – Gen 3 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-20
540i (G30/G31) Pre-LCI 2017–2019 – Gen 1 / Catless / No heat shieldBE-DP-B58G-21
540i (G30/G31) Pre-LCI 2017–2019 – Gen 1 / Catless / Add heat shieldBE-DP-B58G-22
540i (G30/G31) Pre-LCI 2017–2019 – Gen 1 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-23
540i (G30/G31) Pre-LCI 2017–2019 – Gen 1 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-24
540i (G30/G31) LCI 2020–2023 – Gen 2 / Catless / No heat shieldBE-DP-B58G-25
540i (G30/G31) LCI 2020–2023 – Gen 2 / Catless / Add heat shieldBE-DP-B58G-26
540i (G30/G31) LCI 2020–2023 – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-27
540i (G30/G31) LCI 2020–2023 – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-28
640i GT (G32) Pre-LCI 2017–2019 – Gen 1 / Catless / No heat shieldBE-DP-B58G-29
640i GT (G32) Pre-LCI 2017–2019 – Gen 1 / Catless / Add heat shieldBE-DP-B58G-30
640i GT (G32) Pre-LCI 2017–2019 – Gen 1 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-31
640i GT (G32) Pre-LCI 2017–2019 – Gen 1 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-32
640i GT (G32) LCI 2020–2023 – Gen 2 / Catless / No heat shieldBE-DP-B58G-33
640i GT (G32) LCI 2020–2023 – Gen 2 / Catless / Add heat shieldBE-DP-B58G-34
640i GT (G32) LCI 2020–2023 – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-35
640i GT (G32) LCI 2020–2023 – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-36
740i (G11/G12) Pre-LCI 2015–2019 – Gen 1 / Catless / No heat shieldBE-DP-B58G-37
740i (G11/G12) Pre-LCI 2015–2019 – Gen 1 / Catless / Add heat shieldBE-DP-B58G-38
740i (G11/G12) Pre-LCI 2015–2019 – Gen 1 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-39
740i (G11/G12) Pre-LCI 2015–2019 – Gen 1 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-40
740i (G11/G12) LCI 2019–2022 – Gen 2 / Catless / No heat shieldBE-DP-B58G-41
740i (G11/G12) LCI 2019–2022 – Gen 2 / Catless / Add heat shieldBE-DP-B58G-42
740i (G11/G12) LCI 2019–2022 – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-43
740i (G11/G12) LCI 2019–2022 – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-44
840i (G14/G15/G16) – Gen 2 / Catless / No heat shieldBE-DP-B58G-45
840i (G14/G15/G16) – Gen 2 / Catless / Add heat shieldBE-DP-B58G-46
840i (G14/G15/G16) – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-47
840i (G14/G15/G16) – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-48
X3 M40i (G01) – Gen 2 / Catless / No heat shieldBE-DP-B58G-49
X3 M40i (G01) – Gen 2 / Catless / Add heat shieldBE-DP-B58G-50
X3 M40i (G01) – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-51
X3 M40i (G01) – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-52
X4 M40i (G02) – Gen 2 / Catless / No heat shieldBE-DP-B58G-53
X4 M40i (G02) – Gen 2 / Catless / Add heat shieldBE-DP-B58G-54
X4 M40i (G02) – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-55
X4 M40i (G02) – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-56
X5 40i (G05) 2019–2023 – Gen 2 / Catless / No heat shieldBE-DP-B58G-57
X5 40i (G05) 2019–2023 – Gen 2 / Catless / Add heat shieldBE-DP-B58G-58
X5 40i (G05) 2019–2023 – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-59
X5 40i (G05) 2019–2023 – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-60
X5 40i (G05) 2024+ – Gen 3 / Catless / No heat shieldBE-DP-B58G-61
X5 40i (G05) 2024+ – Gen 3 / Catless / Add heat shieldBE-DP-B58G-62
X5 40i (G05) 2024+ – Gen 3 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-63
X5 40i (G05) 2024+ – Gen 3 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-64
X6 40i (G06) 2020–2023 – Gen 2 / Catless / No heat shieldBE-DP-B58G-65
X6 40i (G06) 2020–2023 – Gen 2 / Catless / Add heat shieldBE-DP-B58G-66
X6 40i (G06) 2020–2023 – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-67
X6 40i (G06) 2020–2023 – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-68
X6 40i (G06) 2024+ – Gen 3 / Catless / No heat shieldBE-DP-B58G-69
X6 40i (G06) 2024+ – Gen 3 / Catless / Add heat shieldBE-DP-B58G-70
X6 40i (G06) 2024+ – Gen 3 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-71
X6 40i (G06) 2024+ – Gen 3 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-72
X7 40i (G07) 2019–2022 – Gen 2 / Catless / No heat shieldBE-DP-B58G-73
X7 40i (G07) 2019–2022 – Gen 2 / Catless / Add heat shieldBE-DP-B58G-74
X7 40i (G07) 2019–2022 – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-75
X7 40i (G07) 2019–2022 – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-76
X7 40i (G07) 2023+ – Gen 3 / Catless / No heat shieldBE-DP-B58G-77
X7 40i (G07) 2023+ – Gen 3 / Catless / Add heat shieldBE-DP-B58G-78
X7 40i (G07) 2023+ – Gen 3 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-79
X7 40i (G07) 2023+ – Gen 3 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-80
Z4 M40i (G29) 2019+ – Gen 2 / Catless / No heat shieldBE-DP-B58G-81
Z4 M40i (G29) 2019+ – Gen 2 / Catless / Add heat shieldBE-DP-B58G-82
Z4 M40i (G29) 2019+ – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-83
Z4 M40i (G29) 2019+ – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-84
Supra MkV (A90/A91) – Gen 2 / Catless / No heat shieldBE-DP-B58G-85
Supra MkV (A90/A91) – Gen 2 / Catless / Add heat shieldBE-DP-B58G-86
Supra MkV (A90/A91) – Gen 2 / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-87
Supra MkV (A90/A91) – Gen 2 / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-88
Not sure – we'll confirm / Catless / No heat shieldBE-DP-B58G-89
Not sure – we'll confirm / Catless / Add heat shieldBE-DP-B58G-90
Not sure – we'll confirm / High Flow Catalytic Converter / No heat shieldBE-DP-B58G-91
Not sure – we'll confirm / High Flow Catalytic Converter / Add heat shieldBE-DP-B58G-92
Real-World Tested · Developed On Street And Track
12 Month Warranty · Insured Freight, Worldwide Shipping
Expert Support · Fitment Advice Before You Buy
Shipping (Australia & international)
Most parts are dispatched within 5–14 business days. We'll email you a confirmed dispatch date within 24 hours of ordering. Australia: flat rate shipping, shown at checkout before you pay. General and BMW parts from $22.99, cat-back exhausts $99, turbo kits $210, transmissions from $334 and engines from $366. New Zealand: small parts $49, mid-size parts $99, cat-back exhausts $179 and engine short blocks $399. International (DHL, tracked): general parts $150, BMW parts $149.99 to North America and $249.99 elsewhere, turbochargers $275 to the US, Canada and China and $470 elsewhere. Turbo kits, engines and transmissions going overseas are quoted after you order. Import duties and taxes are paid by the buyer. Want an exact price first? Use the quote request below.
Not sure it fits your car?
Send us your vehicle and chassis code before you buy and we will confirm fitment. Email sales@boostedengineering.com.au or use the contact page.
Returns
Changed your mind? You have 30 days to return a part for store credit or to swap it for another item. Parts must be unused, uninstalled and in their original packaging, and the return must be approved by us first. Installed or used parts cannot be returned for change of mind. Your store credit balance is shown when you log in to your account, and you can use it at checkout. Faulty or damaged items are covered by our warranty and your rights under Australian Consumer Law. Report shipping damage within 48 hours of delivery.
Warranty
12 month warranty on Boosted Engineering products. If something is wrong with your part, contact us and we will look after you.
Save 5%
Buy 2 items, get 5% off the cheaper one. Applied automatically at checkout.
Bundle and save
Stage packages for your BMW B58 G Series
Every part for each stage in one cart, for less than buying them separately.Tap a stage to see exactly what is included.
Stage 1
Intake + Charge Pipe
$999Save $61
Stage 2
Intake + Charge Pipe + Downpipe
$1,479Save $81
Stage 2+
Intake + Charge Pipe + Downpipe + Heat Exchanger
$2,449Save $131
Not sure which stage suits your build? Email sales@boostedengineering.com.auAll packages
Shipping outside Australia? Tell us where it is going and we will send you the best shipping price for this part. Request a quote
Customer reviews
What our customers say
Real feedback from real builds
Boosted Engineering’s turbo kits are next level! The craftsmanship, design and attention to detail are outstanding. From the quality of the welds to the overall fit and finish, everything is exceptionally well engineered. Easily some of the best turbo kits on the market!
Best place for getting your ride tuned. Very helpful and professional will be going back after doing some upgrades down the track
I’m so thankful for the quality work performed on my M2, Ben’s workmanship has been like no other. If you need a turbo kit Boosted Engineering has you covered!
Not sure what fits your car?
Talk to the team about parts and services.