SKU: 81977877196

BMW F80/F82/F83 M3/M4 Equal Length Valved Sport Exhaust System

Sale price$1038.15 Regular price$1153.50
Save 10%

Pay in installments of $288.38 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

BMW F80/F82/F83 M3/M4 Equal Length Valved Sport Exhaust SystemBMW F8X M3 M4 Valved Cat Back Exhaust System Equal Length 2. 75" Mid Section with H Pipe and 3. 5" Axle Back (T304 Stainless Steel or Grade 5 Titanium) Overview The S55 engine powering the BMW F8X M3 and M4 is a performance masterpiece, but its stock exhaust note has long been criticized for excessive rasp and a lack of tonal depth. The Valvetronic Designs Equal Length Valved Cat Back is the definitive solutioneliminating the factory harshness and


BMW F8X M3/M4 Valved Cat-Back Exhaust System

Equal-Length 2.75" Mid-Section with H-Pipe and 3.5" Axle-Back

(T304 Stainless Steel or Grade 5 Titanium)


Overview

The S55 engine powering the BMW F8X M3 and M4 is a performance masterpiece, but its stock exhaust note has long been criticized for excessive rasp and a lack of tonal depth. The Valvetronic Designs Equal-Length Valved Cat-Back is the definitive solution—eliminating the factory harshness and unlocking the rich, balanced sound the S55 was always capable of producing.

This system features a 2.75-inch equal-length mid-section with an H-pipe feeding into a 3.5-inch axle-back. The equal-length design smooths the exhaust tone across the rev range while preserving the aggressive character owners love. With valves open, gases exit freely from the passenger-side tips for maximum volume and performance. With valves closed, flow is routed through our quad-chamber muffler to the driver-side tips for a quieter, more refined note—ideal for daily driving.

No cutting or welding is required—this is a true direct bolt-on system designed to mount to factory points.


Why It Works

  • Equal-Length Mid-Section: Balances pulses for a cleaner, smoother tone without losing aggression.

  • H-Pipe Design: Improves scavenging for a fuller, more refined sound.

  • Dual-Mode Operation: Raw and loud (open) or subdued and civilized (closed).


Sound & Control

  • Valves Open: Aggressive, free-breathing tone with reduced rasp and improved high-rpm clarity.

  • Valves Closed: Stock-like sound levels for stealthy driving.

  • Electronic Valve Control: Includes standalone controller; OEM integration available.


Construction & Options

  • Materials: T304 stainless steel or Grade 5 titanium.

  • Weight Savings: –21.7 lb (Stainless) / –49.2 lb (Titanium) vs. OEM.

  • Craftsmanship: Precision TIG welds and fully mandrel-bent tubing for maximum flow.

  • Tips: Multiple premium finish options to complement your M3 or M4.


Fitment

  • 2015–2018 BMW M3 (F80)

  • 2015–2020 BMW M4 Coupe (F82)

  • 2015–2020 BMW M4 Convertible (F83)


Installation Notes

  • Direct bolt-on; no cutting or welding required.

  • 100% reversible—return to stock at any time.

  • Note for S55 Owners: On free-flow/race downpipes, “2k rpm rasp” may be present during low-rpm shifts. For the most refined tone, we recommend high-flow (200 cell) catalytic converters.


What’s Included

  • 2.75" equal-length H-pipe mid-section

  • 3.5" axle-back with quad-chamber muffler

  • Electronic valve system with controller (OEM integration optional)

  • All necessary clamps and hardware


Specifications

  • Mid-Section Diameter: 2.75" equal-length with H-pipe

  • Axle-Back Diameter: 3.5"

  • Material: T304 stainless steel or Grade 5 titanium

  • Valves: Electronic, rapid open/close

  • Weight Savings: –21.7 lb (Stainless) / –49.2 lb (Titanium) vs. OEM

  • Design: Quad-chamber muffler for refined closed-valve tone


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 81977877196

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 14 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Carmen Alicea
Cuba, US
★★★★★ 5
A Beta Worth Rooting For
Format: Kindle
In Spare, Violet Fox flips the omegaverse on its head, giving us a Beta heroine determined to make her mark. Joining the Beta Trials to support her sick father, she's thrown into a pack that doesn't want her, especially the possessive Alphas. But here's the twist: their sweet Omega turns out to be her scent match. Cue the angst, forbidden tension, and a slow-burn romance that will make your heart ache in the best way. Violet Fox delivers an emotional, refreshing take on the genre, proving Betas aren't "spares." They're stars.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2025
C
Verified Purchase
C. Hunter
Bozeman, US
★★★★★ 5
Beta, Alpha, Omega oh my!
Format: Kindle
Omegas are precious and given to Alphas & their packs... but the Betas want in too. To this end, the Beta government is rolling out its trial of assigning a Beta to each Alpha-Omega pack. But forcing a Beta into a pack where they are not wanted will not end well... Of course, no one expected the Omega to fall for the assigned Beta. Great read and cliffhanger
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2025
B
Verified Purchase
B. Stubby
Chelsea, US
★★★★★ 3
A familiar story, just with…..less.
Format: Kindle
So, as other reviewers make clear, this is very similar to Pack Darling and The Beta. It’s much closer aligned with The Beta, in plot and maybe more like Pack Darling with characters. That being said, I don’t hate this…..but it wasn’t great either. It’s both books mentioned but just….less. Less angst, less emotion, less feeling. The plot feels very half fleshed out, and the “bad guy” feels underwhelming. I didn’t really feel any real emotions from and of the male leads, except maybe Oliver. The others fell sorta flat for me. And Mika makes herself out to be this big bad ass straight outta training and then we never see it from here again with the one fitting room incident as the exception. SPOILER: The whole, “Oh, I’m actually probably an Omega, but I don’t wanna be but I do actually wanna be but no one can ever know my secret that I do nothing to hide “ thing fell so flat. She never commutes to believing she was secretly an omega, but also mentions her “secret” a lot. It just felt so manufactured. I’m intrigued enough to read part 2 and see how the author closes everything out, but this is not one I’ll recommend or ever come back to.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2024
S
Verified Purchase
SR
Lexington, US
★★★★★ 5
Good start to a series
Format: Kindle
I delayed reading the series for reasons I don’t remember. But my TBR list is huge so I thought I’d take a shot of this and I was pleasantly surprised. I didn’t think the blurb about it was anything special. But it was a very good book. It took some interesting twists and turns. I am so glad the second book is already out. Because I would not have waited patiently. Very slow burn but good storyline. 🔥🔥/5
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2025
J
Verified Purchase
Jammie Clark
Massapequa, US
★★★★★ 4
A good read
Format: Kindle
Multiple points of view. 3 Alpha men and an Omega male. She is a Beta in training for a new program placing betas in Alpha/Omega packs. Mila is only doing the program for the money to take care of her dad. She wasn't expecting to fall for a pack but when she sees this packs Omega she is done for. There is just something about him. His Alphas are good looking as well. Too bad she is hiding a secret and their government is acting shady. I liked it and can't wait to see where their story goes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2023

recommand products