N54 Catless Downpipes
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up to 8 weeks
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tested & fitted
precision engineering
Description
Description
Unlock the legendary power potential of your N54 with the Catless Downpipes. Designed for every N54-powered BMW — 335i, 135i, 535i, 740i, Z4 35i, and beyond — this catless downpipe set eliminates the restrictive factory catalytic converters that BMW fitted to muffle and choke the most tuner-friendly engine they ever built. The single most impactful bolt-on you can do to an N54, and a foundational mod for any Stage 2 or higher build.
Key Features:
* Catless High-Flow Design: Eliminates the restrictive OEM catalytic converters entirely — opens up exhaust flow dramatically, unlocking real top-end power, faster turbo spool, and a more responsive throttle. Typical builds see 20-40+ wheel horsepower gains when paired with a proper tune.
* N54 Sound Transformation: Removes the muffling effect of the OEM cats — the N54 finally sounds the way the twin-turbo straight-six should, with deeper bass tones, pronounced overrun burbles, blow-off chatter, and that signature N54 snarl that defines the engine's reputation.
* Wide N54 Chassis Compatibility: Engineered for the N54 engine across every chassis it was fitted to — E90 / E91 / E92 / E93 335i, E82 / E88 135i, E60 535i, F01 / F02 740i, E89 Z4 35i / 35is, and beyond. Confirm your exact chassis and year before ordering.
* Premium Stainless Steel Construction: Built from T304 stainless steel for corrosion resistance, heat tolerance, and long-term durability under Australian conditions — handles daily driving, track use, and high-boost builds without rusting, cracking, or failing welds.
* Direct OEM Flange Fitment: Precision-machined flanges and clamps designed to match factory mounting points — bolts directly to the OEM turbo outlets and mid-pipe section without any cutting, welding, or custom fabrication.
* The Foundation Mod for Every N54 Build: Required for serious tune levels (Stage 2 and beyond) — pairs perfectly with MHD, JB4, or Bootmod3 tunes, FMIC, methanol injection, and bigger turbo conversions. The first real step toward unlocking what the N54 can actually do.
IMPORTANT COMPLIANCE NOTE: Catless downpipes are designed for OFF-ROAD / TRACK USE ONLY. Removes the catalytic converters required for road registration in Australia and most international markets — NOT legal for road-registered vehicles. Will trigger check engine lights and emissions codes without proper tuning. Will not pass any emissions inspection. Verify your intended use case and local regulations before ordering.
TUNE REQUIRED: To unlock full power potential and eliminate fault codes, a custom or off-the-shelf tune (MHD, JB4, Bootmod3, etc.) is required after fitment.
Will this fit my car?
Will this fit my car?
Compatible with all N54-powered BMW models.
E82 — BMW 135i / 135is (Coupe, 2008-2013)
E88 — BMW 135i (Convertible, 2008-2010)
E90 — BMW 335i (Sedan, 2007-2011)
E91 — BMW 335i Touring (Wagon, 2007-2010)
E92 — BMW 335i / 335is (Coupe, 2007-2013)
E93 — BMW 335i / 335is (Convertible, 2007-2013)
E60 — BMW 535i (Sedan, 2008-2010)
E61 — BMW 535i Touring (Wagon, 2008-2010)
F10 — BMW 535i (Sedan, 2010-2011, pre-N55 only)
E89 — BMW Z4 sDrive35i / sDrive35is (Roadster, 2009-2016)
F01 — BMW 740i (Sedan, 2009-2012)
F02 — BMW 740Li (Long Wheelbase Sedan, 2009-2012)
E71 — BMW X6 xDrive35i (SAV, 2008-2010, pre-N55 only)
Confirm your exact chassis code, production year, and engine code (N54B30) before ordering. Some chassis transitioned from N54 to N55 mid-production — verify your engine code if unsure.
Delivery and Shipping
Delivery and Shipping
Our N55 downpipes are in stock & ready to ship.
N54 Catless Downpipes
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Frequently Asked Questions
Return window and conditions
You've got 30 days from the day your order arrives to send it back.
Parts must be unused, uninstalled, and in original packaging with all hardware included.
Electrical components, custom-fit parts, and clearance items are final sale unless they arrived defective.
Who pays return shipping?
If the part is defective, mislabeled, or we got the order wrong, we cover return shipping and send a prepaid label.
If it's a change of mind or wrong-fit on your end, return shipping is on you.
Manufacturer warranty vs. your warranty
Every part we sell carries the manufacturer's warranty, that's anywhere from 90 days to lifetime depending on the brand, and it's listed on the product page.
On top of that, Nuro backs every order with a 30-day satisfaction guarantee. If something's wrong in those first 30 days, you deal with us, not the manufacturer.
How to file a warranty claim
Email info@nuroperformance.com with your order number, a quick description of the issue, and photos or video of the problem.
We handle the back-and-forth with the manufacturer so you don't have to chase anyone. Most claims are resolved in 7–14 business days.
Shipping costs and timeframes
Standard shipping in Australia & the USA is free, otherwise calculated at checkout based on size and zip.
Most orders ship within 1–2 business days and land at your door in 3–7 business days.
Need it faster? Expedited and overnight options are available at checkout if possible.
Do you ship internationally?
Yes, we ship to Canada, Mexico, UK, EU, and Australia.
Rates are calculated at checkout. Heads up: any duties, taxes, or customs fees charged by your country are your responsibility we can't predict or prepay those.
Though we are based in Melbourne, Australia.
Tracking info
The moment your order ships, you'll get an email with a tracking number. You can also pull tracking up anytime by logging into your account at nuroperformance.com/account.
Tracking can take up to 24 hours to start updating after shipment, that's normal.
What if my package arrives damaged?
Take photos of the box AND the part before unpacking further, then email info@nuroperformance.com within 48 hours of delivery.
We file the carrier claim, you get a replacement on the way.
Don't toss the packaging until we tell you it's clear, carriers sometimes inspect.
Payment methods
We accept all major credit cards (Visa, Mastercard, Amex, Discover), PayPal, Apple Pay, Google Pay, and Shop Pay.
Need to split it up? Afterpay is at checkout pay over 8 weeks with no impact to your credit to check eligibility.
Bulk or repeat customer discounts
Yes, every order earns recognition that can lead to discounts. Repeat customers get early access to drops and member-only discounts via email.
Buying for a shop or build series? Apply for a trade account. Email info@nuroperformance.com for tiered pricing.
How do I know if a part fits my car?
Every product page has a fitment selector pick your year, make, model, trim, and engine. If the part fits, you'll see a "Confirmed Fit" badge. Still not sure? Send us your VIN at info@nuroperformance.com and we'll verify before you check out.
Two minutes of double-checking beats a return.
What if I order the wrong part?
It happens. As long as the part is unused and in original packaging, return it within 30 days for a full refund or swap.
If our fitment guide on the site was inaccurate, we cover return shipping. If it was a wrong selection on your end, return shipping is on you.
Do you offer fitment guarantees?
Yes. If our site confirms a part fits your vehicle and it doesn't, we pay return shipping both ways and either find you the right part or give you a full refund. Just send photos showing the fit issue.
OEM vs. aftermarket, what's the difference?
OEM (Original Equipment Manufacturer) parts are made by, or for your car's factory and match the original spec.
Aftermarket parts are made by third-party companies and often offer better performance, more options, or lower prices.
We carry both, and we'll tell you straight which one makes sense for your build.
Are parts new, used, or refurbished?
Everything we sell is brand new unless the listing specifically says "used" or "refurbished."
Used and refurb items are clearly labeled and priced accordingly, no surprises.
Performance claims (HP gains, etc.) How are they measured?
Power, torque, and other performance numbers come straight from manufacturer dyno testing on the specific platform listed.
We don't make up gains or recycle marketing fluff. If the claims look too good to be true, we don't carry the part.
Do you offer installation?
We don't run a shop ourselves, but we work with trusted installers across the US & Australia.
Email us your zip code and the part you bought at info@nuroperformance.com and we'll point you to a vetted shop nearby.
Will this void my factory warranty?
Under the Magnuson-Moss Warranty Act, a dealer can't void your entire warranty just because you installed an aftermarket part.
They CAN deny coverage on a specific component if the aftermarket part directly caused the failure.
Translation: an exhaust won't void your transmission warranty, but a tune might affect your powertrain coverage.
If you're not sure, talk to your dealer before installing.
Return window and conditions
You've got 30 days from the day your order arrives to send it back.
Parts must be unused, uninstalled, and in original packaging with all hardware included.
Electrical components, custom-fit parts, and clearance items are final sale unless they arrived defective.
Who pays return shipping?
If the part is defective, mislabeled, or we got the order wrong, we cover return shipping and send a prepaid label.
If it's a change of mind or wrong-fit on your end, return shipping is on you.
Manufacturer warranty vs. your warranty
Every part we sell carries the manufacturer's warranty, that's anywhere from 90 days to lifetime depending on the brand, and it's listed on the product page.
On top of that, Nuro backs every order with a 30-day satisfaction guarantee. If something's wrong in those first 30 days, you deal with us, not the manufacturer.
How to file a warranty claim
Email info@nuroperformance.com with your order number, a quick description of the issue, and photos or video of the problem.
We handle the back-and-forth with the manufacturer so you don't have to chase anyone. Most claims are resolved in 7–14 business days.
Shipping costs and timeframes
Standard shipping in Australia & the USA is free, otherwise calculated at checkout based on size and zip.
Most orders ship within 1–2 business days and land at your door in 3–7 business days.
Need it faster? Expedited and overnight options are available at checkout if possible.
Do you ship internationally?
Yes, we ship to Canada, Mexico, UK, EU, and Australia.
Rates are calculated at checkout. Heads up: any duties, taxes, or customs fees charged by your country are your responsibility we can't predict or prepay those.
Though we are based in Melbourne, Australia.
Tracking info
The moment your order ships, you'll get an email with a tracking number. You can also pull tracking up anytime by logging into your account at nuroperformance.com/account.
Tracking can take up to 24 hours to start updating after shipment, that's normal.
What if my package arrives damaged?
Take photos of the box AND the part before unpacking further, then email info@nuroperformance.com within 48 hours of delivery.
We file the carrier claim, you get a replacement on the way.
Don't toss the packaging until we tell you it's clear, carriers sometimes inspect.
Payment methods
We accept all major credit cards (Visa, Mastercard, Amex, Discover), PayPal, Apple Pay, Google Pay, and Shop Pay.
Need to split it up? Afterpay is at checkout pay over 8 weeks with no impact to your credit to check eligibility.
Bulk or repeat customer discounts
Yes, every order earns recognition that can lead to discounts. Repeat customers get early access to drops and member-only discounts via email.
Buying for a shop or build series? Apply for a trade account. Email info@nuroperformance.com for tiered pricing.
How do I know if a part fits my car?
Every product page has a fitment selector pick your year, make, model, trim, and engine. If the part fits, you'll see a "Confirmed Fit" badge. Still not sure? Send us your VIN at info@nuroperformance.com and we'll verify before you check out.
Two minutes of double-checking beats a return.
What if I order the wrong part?
It happens. As long as the part is unused and in original packaging, return it within 30 days for a full refund or swap.
If our fitment guide on the site was inaccurate, we cover return shipping. If it was a wrong selection on your end, return shipping is on you.
Do you offer fitment guarantees?
Yes. If our site confirms a part fits your vehicle and it doesn't, we pay return shipping both ways and either find you the right part or give you a full refund. Just send photos showing the fit issue.
OEM vs. aftermarket, what's the difference?
OEM (Original Equipment Manufacturer) parts are made by, or for your car's factory and match the original spec.
Aftermarket parts are made by third-party companies and often offer better performance, more options, or lower prices.
We carry both, and we'll tell you straight which one makes sense for your build.
Are parts new, used, or refurbished?
Everything we sell is brand new unless the listing specifically says "used" or "refurbished."
Used and refurb items are clearly labeled and priced accordingly, no surprises.
Performance claims (HP gains, etc.) How are they measured?
Power, torque, and other performance numbers come straight from manufacturer dyno testing on the specific platform listed.
We don't make up gains or recycle marketing fluff. If the claims look too good to be true, we don't carry the part.
Do you offer installation?
We don't run a shop ourselves, but we work with trusted installers across the US & Australia.
Email us your zip code and the part you bought at info@nuroperformance.com and we'll point you to a vetted shop nearby.
Will this void my factory warranty?
Under the Magnuson-Moss Warranty Act, a dealer can't void your entire warranty just because you installed an aftermarket part.
They CAN deny coverage on a specific component if the aftermarket part directly caused the failure.
Translation: an exhaust won't void your transmission warranty, but a tune might affect your powertrain coverage.
If you're not sure, talk to your dealer before installing.
