0 0
HFE BMW M4 F82 S55 Decat Downpipes 3" – Performance Exhaust Upgrade
HFE BMW M4 F82 S55 Decat Downpipes 3" – Performance Exhaust Upgrade
HFE BMW M4 F82 S55 Decat Downpipes 3" – Performance Exhaust Upgrade
HFE BMW M4 F82 S55 Decat Downpipes 3" – Performance Exhaust Upgrade
HFE BMW M4 F82 S55 Decat Downpipes 3" – Performance Exhaust Upgrade
HFE BMW M4 F82 S55 Decat Downpipes 3" – Performance Exhaust Upgrade

HFE BMW M4 F82 S55 Decat Downpipes 3" – Performance Exhaust Upgrade

£499.99£275.00

You Save: £224.99 (45%)

In stock
DC Prestige

Free UK Mainland Shipping Over £99

Klarna available at dcprestige.co.uk

Buy now pay Later with Klarna

Trustpilot - dcprestige.co.uk

4.8 / 5 Stars On Trust Pilot

DC Prestige

Deadline? Message before ordering

CONFIRM STOCK
DELIVERY & RETURN
FITMENT HELP/CONFORMATION?
High Flow Engineering S55 Decat Downpipes Performance Exhaust Upgrade

Unlock the full potential of your BMW M4 F82 with the HFE S55 3" Decat Downpipes. Designed to replace the restrictive factory catalytic converters, these high-flow downpipes significantly reduce exhaust backpressure, improve turbo efficiency, and allow the S55 engine to deliver stronger performance and sharper throttle response — particularly on tuned vehicles.

⚠ IMPORTANT – ROAD USE, EMISSIONS & MOT NOTICE

These decat downpipes remove the factory catalytic converters and are intended for off-road or motorsport use only. They are not UK emissions compliant and will result in a UK MOT emissions failure. ECU tuning is strongly recommended after installation.

Key Features＋
  • High-Flow 3" Decat Design: Removes restrictive OEM catalytic converters.
  • Improved Turbo Response: Reduces backpressure for faster spool.
  • Performance-Grade Stainless Steel: Built for durability and heat resistance.
  • Mandrel-Bent Tubing: Smooth internal transitions for optimal flow.
  • Enhanced Exhaust Tone: Deeper, more aggressive sound under load.
  • Direct-Fit Installation: Designed to replace OEM downpipes without modification.
Why Upgrade S55 Downpipes?＋
  • Factory catalytic converters are a major restriction on tuned S55 engines.
  • Reduced backpressure improves power delivery and torque response.
  • Essential supporting modification for Stage 2 setups.
  • Improves exhaust gas flow at high RPM.
  • Pairs perfectly with upgraded intakes and charge pipes.
Technical Specifications＋
  • Material: High-grade 304 stainless steel
  • Configuration: Decat (no catalytic converters)
  • Construction: Mandrel bent & welded
  • Fitment: Direct OEM replacement
  • Engine: S55 Twin Turbo
Vehicle Compatibility＋
  • BMW M4: F82 Coupe (2014–2020)

✔ S55 twin-turbo engine only
✔ Compatible with factory and most aftermarket exhaust systems
✔ ECU tuning required

Installation＋
  • Remove factory downpipes and catalytic converters.
  • Install HFE decat downpipes using OEM mounting locations.
  • Check clearance and secure all connections.
  • ECU remapping required prior to driving.
  • Professional installation strongly recommended.
Text with Icons
Truck Icon
FREE MAINLAND UK SHIPPING

Free shipping on all UK stock over £99

Klarna Icon
KLARNA

Klarna available on all purchases

WhatsApp Icon
QUESTIONS?

Get in touch with us via WhatsApp

Trustpilot Icon
4.8 STARS ON TRUSTPILOT

See what our customers have to say
SIGN UP

Sign up to D&C Prestige updates to receive information about new arrivals, future events and discounts.

Here to help

If you can’t find the answer in our FAQs, please get in touch — we’re here to help.

Phone: +44 7300 167891

WhatsApp: Message us directly

Email: contact@dcprestige.co.uk

 

Address: Unit 10, Morton Peto Road, Great Yarmouth, NR31 9UP, United Kingdom

 

For urgent order or installation enquiries, WhatsApp is usually the quickest way to reach us.

You can also reach us via our social media channels for general questions and updates:

Facebook

Instagram


Please note: Our address is for business correspondence and pre-booked collections/installs only. We do not operate a walk-in shop

Company: D&C Prestige Online Ltd

Company No: 15631581

FAQ & MORE
American Express
Apple Pay
Diners Club
Discover
Google Pay
iDEAL
Klarna
Maestro
Mastercard
PayPal
Shop Pay
Visa

⚠️ DISCLAIMER Unless explicitly stated otherwise, all products sold by DC Prestige Online LTD are designated race-only and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may be in violation of local, state, and Federal laws. DC Prestige Online LTD does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer. Read our full terms of service here.

WHAT ARE YOU LOOKING FOR?

NEED HELP?
phone icon +44 7300 167891
email icon Email us
FOLLOW US

Thanks for subscribing!

Continue shopping

Important Availability Notice

Although our products may display an “In Stock” status, this indicator does not always reflect real-time inventory. Stock levels can change quickly, and some items may require additional processing time.

If you are working to a deadline, scheduling a project, or need your order within a specific timeframe, please contact us before purchasing via WhatsApp or the Contact us page so we can confirm availability and provide accurate lead times.

We’re here to help ensure you get exactly what you need, when you need it.

Last updated: 07/09/2025

We want you to be confident when shopping with us. This page explains your rights and our terms for deliveries, returns, refunds, exchanges, and digital products. It applies to UK and international customers.

1. Standard Returns (UK & International)

  • Notify us within 14 calendar days of receiving your order if you wish to return.
  • Once approved, you have a further 14 days to send the goods back.
  • Items must be unused, uninstalled, and in original packaging, with proof of purchase.
  • Refunds are processed to your original payment method within 14 days of receiving goods (or proof of postage).

Note: Standard delivery costs will be refunded; upgraded shipping (e.g., next-day) is non-refundable. You are responsible for return postage unless the item is faulty, damaged, or incorrect. Used, installed, or damaged goods beyond reasonable inspection may incur up to 50% deduction from the refund.

2. Special Order & Custom Goods

  • Special-order parts must be returned within 7 days (if non-faulty) and may incur up to a 50% restocking fee, depending on supplier terms.
  • Custom-made or made-to-order goods are non-returnable unless faulty or not as described.
  • Faulty or incorrect items may be returned within 30 days for refund, repair, or replacement.
  • Customers are responsible for providing accurate specifications; we are not liable for errors due to incorrect information.

3. Damaged, Faulty, or Incorrect Items

  • All products are inspected before dispatch.
  • If your order arrives damaged, faulty, or incorrect:
  • Contact us immediately with clear photos of the product and packaging.
  • We will cover return shipping costs and issue a refund, repair, or replacement.
  • If a parcel arrives visibly damaged, sign as “damaged” (if possible) and notify us straight away.

4. Non-Returnable Items

  • Digital downloads, codes, or software
  • Custom-made, made-to-order, or special-order goods
  • Personalised products
  • Pre-orders not yet fulfilled
  • Gift cards
  • Used, installed, or modified items
  • Hazardous materials, flammable liquids, or gases
  • Services such as painting, ceramic coatings, or extended warranties

5. Exchanges

  • To exchange an item, return it via the standard process and place a new order for the replacement.
  • Customers are responsible for return and new delivery costs.
  • If the exchange is due to a faulty or incorrect item, we will cover return shipping and send the replacement free of charge.

6. Installation at D&C Prestige

  • Cancellations or changes made less than 48 hours before your installation appointment will forfeit your fitting deposit.
  • If you cancel and request a product refund, a 15% restocking fee applies, along with the deposit fee (if applicable).

7. Shipping & International Deliveries

  • In-stock items typically dispatch within 1–2 business days; some items may take up to 72 hours or longer during busy periods.
  • Tracking information will be provided once the order is shipped.
  • International customers are responsible for customs duties, taxes, and import fees unless the item is faulty or incorrect.
  • Refunds for international returns are issued in GBP. Currency conversion fees, bank charges, and international transaction costs are the customer’s responsibility.
  • We are not liable for customs delays, clearance costs, or refusal of goods by customs authorities.

For full details, see our Shipping Policy.

8. Digital Products (Downloads, Codes, Software)

  • Digital content (e.g., Bootmod3, XHP) is typically delivered immediately or within 24 hours via email or account access.
  • By purchasing, you agree that delivery is deemed to have started once payment is made, and you waive your right to cancel under the 14-day cooling-off period allowed by UK law.
  • Refunds are only provided if the product is faulty, inaccessible due to our error, or not as described.
  • You are responsible for ensuring compatibility with your vehicle, hardware, or software; refunds are not offered if supplied correctly but incompatible due to buyer error.
  • International customers agree to the same terms.

9. How to Start a Return

  1. Visit our Contact Page and provide your full name, order number, and reason for return.
  2. Wait for return authorisation and instructions before sending your item.
  3. Once received and inspected, we’ll notify you of approval or rejection of your refund.

Proof of return: Customers must retain proof of postage for all returns. Tracked and insured services are strongly recommended.

Refund method: Refunds are issued only to the original payment method used for the purchase. We cannot refund to alternative cards, accounts, or payment services.

Refused or undeliverable parcels: If a delivery is refused, unclaimed, or undeliverable due to incorrect address details provided, the customer will be responsible for return shipping costs and any applicable restocking fees.

Contact Us.

We’re happy to answer any questions you have about a product or service, fill in the contact form below.

Thanks for contacting us. We'll get back to you as soon as possible.

Continue shopping

HFE BMW M4 F82 S55 Decat Downpipes 3" – Performance Exhaust Upgrade