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BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System

Price
$1,499.99

CONFIGURATION:

MATERIAL:

TIPS:

BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System

CONFIGURATION
MATERIAL
TIPS
Price
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
HFD Midpipe Only BRUSHED T304 STAINLESS STEEL No Exhaust Tips (Midpipe Only)
Price
$1,499.99
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
FULL SYSTEM (CATBACK) BRUSHED T304 STAINLESS STEEL (4) 1X1 CARBON FIBER (4.0 OUTLET)
Price
$2,999.99
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
FULL SYSTEM (CATBACK) BRUSHED T304 STAINLESS STEEL (4) BRUSHED STEEL (3.5 OUTLET)
Price
$2,999.99
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
FULL SYSTEM (CATBACK) BRUSHED T304 STAINLESS STEEL (4) BURNT (3.5 OUTLET)
Price
$2,999.99
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
FULL SYSTEM (CATBACK) BRUSHED T304 STAINLESS STEEL (4) BLACK (3.5 OUTLET)
Price
$2,999.99
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
FULL SYSTEM (CATBACK) BRUSHED T304 STAINLESS STEEL (4) FORGED CARBON FIBER (3.5 OUTLET)
Price
$2,999.99
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
FULL SYSTEM + 400 Cell Catted Downpipes BRUSHED T304 STAINLESS STEEL (4) 1X1 CARBON FIBER (4.0 OUTLET)
Price
$4,999.99
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
FULL SYSTEM + 400 Cell Catted Downpipes BRUSHED T304 STAINLESS STEEL (4) BRUSHED STEEL (3.5 OUTLET)
Price
$4,999.99
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
FULL SYSTEM + 400 Cell Catted Downpipes BRUSHED T304 STAINLESS STEEL (4) BURNT (3.5 OUTLET)
Price
$4,999.99
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
FULL SYSTEM + 400 Cell Catted Downpipes BRUSHED T304 STAINLESS STEEL (4) BLACK (3.5 OUTLET)
Price
$4,999.99
BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System
FULL SYSTEM + 400 Cell Catted Downpipes BRUSHED T304 STAINLESS STEEL (4) FORGED CARBON FIBER (3.5 OUTLET)
Price
$4,999.99
HFD Midpipe Only GRADE 5 TITANIUM No Exhaust Tips (Midpipe Only)
Price
$2,749.99
Sold out
FULL SYSTEM (CATBACK) GRADE 5 TITANIUM (4) 1X1 CARBON FIBER (4.0 OUTLET)
Price
$4,249.99
Sold out
FULL SYSTEM (CATBACK) GRADE 5 TITANIUM (4) BRUSHED STEEL (3.5 OUTLET)
Price
$4,249.99
Sold out
FULL SYSTEM (CATBACK) GRADE 5 TITANIUM (4) BURNT (3.5 OUTLET)
Price
$4,249.99
Sold out
FULL SYSTEM (CATBACK) GRADE 5 TITANIUM (4) BLACK (3.5 OUTLET)
Price
$4,249.99
Sold out
FULL SYSTEM (CATBACK) GRADE 5 TITANIUM (4) FORGED CARBON FIBER (3.5 OUTLET)
Price
$4,249.99
Sold out
FULL SYSTEM + 400 Cell Catted Downpipes GRADE 5 TITANIUM (4) 1X1 CARBON FIBER (4.0 OUTLET)
Price
$6,249.99
Sold out
FULL SYSTEM + 400 Cell Catted Downpipes GRADE 5 TITANIUM (4) BRUSHED STEEL (3.5 OUTLET)
Price
$6,249.99
Sold out
FULL SYSTEM + 400 Cell Catted Downpipes GRADE 5 TITANIUM (4) BURNT (3.5 OUTLET)
Price
$6,249.99
Sold out
FULL SYSTEM + 400 Cell Catted Downpipes GRADE 5 TITANIUM (4) BLACK (3.5 OUTLET)
Price
$6,249.99
Sold out
FULL SYSTEM + 400 Cell Catted Downpipes GRADE 5 TITANIUM (4) FORGED CARBON FIBER (3.5 OUTLET)
Price
$6,249.99
Sold out
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📞 Price too high or questions before ordering? Call/text us at 475-227-5381

*Pre-order only.*

BMW G80 M3 / G82–G83 M4 HFD Exhaust System

HFD Midpipe + Valved Axle-Back Exhaust System now including HFD chassis brace & 3" to 2.75" reducer clamps for OEM axle back compatibility!

Overview

The BMW G8X platform delivers incredible performance—but the sound still leaves room for improvement. The Valvetronic Designs HFD Exhaust System was developed to completely redefine the S58’s sound profile by combining our High Frequency Development midpipe with our signature valved axle-back system.

HFD, or High Frequency Development, represents a clean-sheet approach to exhaust engineering focused on optimizing exhaust pulse timing, improving acoustic balance, and creating a smoother, more exotic inline-six tone. Paired with our valved axle-back, this system delivers both refined daily drivability and aggressive performance sound on demand.

Designed as a complete solution, the HFD Exhaust System enhances tone quality—not just volume—eliminating unwanted rasp and low-RPM harshness while preserving the high-frequency character that makes the S58 come alive.

Sound Clip: IRL 3 inch Downpipes + HFD Midpipe + Axleback

Sound Clip: HFD Exhaust System (400 Cell Downpipes + HFD Midpipe + Axle-Back)

Sound Clip: HFD Exhaust System (Stock Downpipes + Midpipe + Axle-Back)

 

Why It Works

  • HFD midpipe design: Developed from the ground up to refine exhaust pulse timing and deliver a smoother, higher-quality sound profile.

  • Valved axle-back system: Provides full control over sound—quiet and refined when closed, aggressive and engaging when opened.

  • Full system integration: Engineered as a complete exhaust solution to ensure optimal flow, tone, and performance.

  • 3-inch midpipe layout: Supports improved exhaust flow and higher-horsepower applications, including hybrid turbo setups.

Sound & Control

  • Refined inline-six tone: Smoother, more exotic sound signature across the entire RPM range.

  • High-frequency character: Sharper, more aggressive tone under load without excessive harshness.

  • Valve control: Switch between comfortable daily driving and full performance sound instantly.

  • Reduced rasp: Engineered to eliminate unwanted frequencies common in less-refined systems.

Construction & Options

  • Materials: T304 stainless steel or ultra-light Grade 5 titanium.

  • Weight savings: Significant reduction compared to factory system (varies by material).

  • Craftsmanship: Precision TIG welds, mandrel-bent tubing, and premium construction throughout.

  • Tips: Premium exhaust tips included.

Valve Integration

  • Electronic valve control with included controller for instant adjustment.

  • OEM integration available for factory-style valve operation.

Fitment

  • 2020+ BMW G80 M3

  • 2020+ BMW G82 M4 (Coupe)

  • 2020+ BMW G83 M4 (Convertible)

Installation Notes

  • Designed as a complete exhaust system for the BMW G8X platform.

  • Professional installation is recommended.

  • System is fully reversible.

  • CLICK HERE FOR INSTALL GUIDE

What’s Included

  • HFD midpipe assembly

  • Valved axle-back exhaust system

  • Valve controller

  • Exhaust tips

  • Hardware and clamps

  • (2) 3" to 2.75" reducer sleeve clamps

  • Valvetronic HFD Chassis Brace

Specifications

  • Tubing diameter: 3.0" midpipe

  • Materials: T304 stainless steel

  • Valves: Electronic, with controller (OEM integration available)


 

BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System

BMW G80/G82/G83 M3 / M4 HFD Valved Sport Exhaust System

CONFIGURATION: HFD Midpipe Only MATERIAL: BRUSHED T304 STAINLESS STEEL TIPS: No Exhaust Tips (Midpipe Only)

Price
$1,499.99

Questions?

WE HAVE ANSWERS

How long til' I get my order?

Small items arrive to you in under 1 week

Larger products like full suspension kits must ship freight and can take 1-3 Weeks

Are Installation Instructions Included?

Instructions are included for most parts that require any sort of knowledge to install.

Here's what to do if your parts come WITHOUT instructions:

1. Some parts are genuinely common sense on how they get installed

2. If you can't figure it out on your own, YOUTUBE IS YOUR FRIEND! Our founder started this company from learning how to build headlights off a YouTube Video

3. If there are no videos on YouTube, or instructions anywhere on Google then please CALL OR EMAIL US and we will guide you through or get you instructions from the manufacturer

4. Doing installs on your own is always fun, but sometimes, it isn't. Always consider having your parts professionally installed

ALWAYS CONSIDER US. We sold you the parts, let us install them at THE LAB in Connecticut. We offer enclosed and open cross country transportation.

Of course you won't want to spend thousands on transportation to install lug nuts or emblems but if you are spending a LOT of money on parts, you may just want to send the car our way

What is your return policy if the part doesn’t fit or isn’t what I expected?

If the part was NOT installed, we accept returns within 14 days of delivery.

If the part WAS installed (or attempted installation), we cannot accept a return.

Do your parts come with a warranty?

All parts come with Manufacturer Warranty! Each manufacturer has different warranties so we suggest reading up on their warranty policy before ordering.

I found a better price somewhere else, can you beat it?

YES! If you come across a competitor with a lower advertised price than us, we will BEAT it by at LEAST 1%. Please contact us with proof of the lower priced product.

Do you give out discounts or sponsorships?

NO! We do not give out discounts or do sponsorships. You can get 5% OFF your first order by signing up for text & email notifications. OR just wait until our BLACK FRIDAY Sale that happens once a year.

Customer Reviews

Overall rating: 4.9 / 5 from 127 reviews.

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Store owner replied: I sincerely apologize for the delay in receiving your order. I’m delighted that you received it. Thank you very much for your order Devin!

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Amazing customer service! You’re getting every bit of what you pay for with LGND!

Liberty Forged Concave - LBTYC05

Store owner replied: You sir are an exemplary customer! One UNIT of a truck and a congratulations on the completion a full build! Thank you for trusting your parts with us

This was the easiest ordering and installation that I have ever experienced, great costumer service and the care and speed they give to get you the product you need. If you are looking then this is your stop because you will be taken care of here.

Free Gift — Mystery Die-Cut Window Decal

Customer video review of Liberty Forged Super Single - LBTY15

Great customer service

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Store owner replied: Truck looks KILLER! Maybe we can finish the build up with some colormatched headlights 🤝

What an awesome business model. The place is amazing!

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Customer video review of JTX Forged Stiletto Single

Wheels are great👍

JTX Forged Stiletto Single

Store owner replied: Hey Cohen ! That things a UNIT! Text me over those videos and thank you for shopping Legends !

Shipped 22x12’s across the country not a blemish! Superior job packing & shipping. Customer service was 5 STARS! Had a little mix up on the order but was immediately rectified by customer fulfillment Mgr. Ava.

Free Gift — M12™ FUEL™ Impact Gun ($150 Value)

Store owner replied: Steven, thank you so much for your wonderful review! We're thrilled to hear your 22x12’s arrived in perfect condition and that our packing and shipping met your expectations. We’re also glad our team could quickly clear up the mix-up! Thank you again for this amazing review!

Customer photo review of S&B LOW PROFILE VALANCE FOR 2023-2026 FORD SUPER DUTY

Great company order was processed and shipped quickly. Part fit perfect and looks great!!!

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Store owner replied: Thank you so much for the great review! We're happy to hear your order was processed and shipped quickly, and that the part fit perfectly and looks great. We appreciate your support and look forward to helping you again!

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Very happy with the final product. Super easy install and this tremor style valance looks a lot better than the stock valance.

S&B LOW PROFILE VALANCE FOR 2023-2026 FORD SUPER DUTY

Store owner replied: Thanks for the review! Glad the install was easy and that you’re loving the Tremor-style valance. Appreciate your support!

Customer video review of 22x12 Liberty Forged LBTY01 - 8x180 Lug Pattern - Polished (Set of 4)

Gotta thank the crew at legends auto parts Great customer service and was able to get these wheels shipped to me quickly. Appreciate you guys and what you do!!!

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Store owner replied: Thanks so much! We’re glad our team could take care of you and get your wheels shipped out quickly. We appreciate the support!

Install was simple and it works amazing. The time line took a while to get but well worth the wait. Thank you!

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Store owner replied: Thank you for your support Bryan! We are glad you are pleased with your order!

Tires look amazing, will post pictures soon Thank you

Toyo Tires Open Country R/T Pro 35x12.50R22LT 121Q F

Store owner replied: Yuriy, thank you so much for your support and this great review! We appreciate you!

Customer photo review of FREE Valve Stem Caps

Couldn't be happier!!!!

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Store owner replied: Thanks for the great review, Caleb! We are thrilled you are happy with your order!

Perfect For customers

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Store owner replied: Thank you for taking the time to leave us a 5 star review! We appreciate you!

The lights fit and work perfect. Very easy install for an aftermarket product. We love the look and are very pleased with everything.

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Store owner replied: Thank you for this review, Scott! We are glad your experience with us went well! Here whenever you need us!

Customer photo review of ARKON - Mandela Wheels

Great customer service. Package came quicker then I expected it to. Thank you all so much for taking care of me.

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Store owner replied: Thank you so much for your order! We are thrilled the process was easy for you! Your truck looks perfect!

Great tires at a great price

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Store owner replied: Thank you so much for your great review, Gregory! We are thrilled you are enjoying your order! :)

Customer video review of 24x12 Liberty Forged LBTY15 - 8x180 Lug Pattern - Black and Milled (Set of 4)

The rims look amazing if you order from the ready to ship section you will have them in about a week usually they take months . This is the cheapest place to get legit rims and they are a awesome company

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Store owner replied: Thank you so much for the kind words! We’re so glad you had a good experience and you love the wheels! Your truck looks absolutely amazing with them! We really appreciate your support and we are here whenever you need us next!

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Love the wheels, tires and excellent service!

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Store owner replied: Thank you for the kind words and your support, Brad!

Great to work with

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Store owner replied: We’re so glad you were satisfied with our service! Thank you for this review, Michael!