Is your carbon fiber real?

All of our products are made from genuine carbon fiber, not hydro-dipped or vinyl wrapped. We source high-quality materials for each piece, and every product is constructed using industry-standard methods including dry carbon for specific high-performance applications. No corners are cut. No filler materials.

Absolutely not. None of our products are drop shipped. Every item is manufactured at our dedicated facility and shipped to our Chicago-based warehouse, where it undergoes a full inspection and quality control process before being delivered to you. We also offer a selection of custom designs created in-house that are exclusive to Insignist Motorsports — ensuring you're not just getting generic parts passed from one supplier to another.

What’s the difference between dry carbon and regular carbon fiber? Why is dry carbon more expensive?

Dry carbon fiber is lighter, stronger, and significantly more expensive to produce than wet (gloss) carbon. While wet carbon is layered with resin and cured with a gel coat for aesthetics, dry carbon is cured under vacuum pressure in an autoclave — the same process used for Formula 1, aerospace, and race-spec builds. This makes it the premium choice for anyone who prioritizes performance, weight savings, and structural integrity.

Is everything on your site in stock?

All of our products are always available to order, a lot are in stock and others are crafted to order, entering production shortly after your purchase. Because we’re a growing business, we balance warehouse space and customer demand, so some orders may take a little longer to fulfill. That said, we maintain an 'In-Stock & Ready-to-Ship' section, clearly displayed on our homepage and in the navigation menu. You can filter by BMW model and instantly view parts ready to ship from Chicago. We’re transparent with our customers, and you can always check your order status by emailing insignist.com@gmail.com or using the Contact Us page. We typically respond within 24–48 hours.

Yes! We want you to have your item as soon as possible. Items listed in our Chicago warehouse under 'In Stock – Ready to Ship' usually ship within 1–3 business days. If it's crafted to order, it enters our tracked production queue and ships when ready. You can always request updates as your order progresses.

Do you ship to Norway?

Yes! We are a VOEC-registered seller, which means Norwegian customers pay 25% VAT at checkout and avoid surprise fees on delivery.👉 Please note: VOEC applies only to items priced under 3,000 NOK per unit (excluding shipping). Our checkout system currently collects VAT on all items, even those above this threshold. If your order includes a product over 3,000 NOK, we will fully refund the VAT within 24–48 hours to comply with Norwegian regulations. This ensures you only pay what’s required and keeps the process seamless for you.We know this is a small extra step, and we truly appreciate your understanding. It’s part of our commitment to transparency and making your experience as smooth as possible.If you have any questions or concerns, feel free to contact us at insignist.com@gmail.com or through our Contact Us page and we’ll be happy to help!

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Valvetronic BMW G8x M3 / M4 Valved Sport Exhaust System

$3,399.00 USD

Sale Sold out

Learn more about our 30-day return policy

BMW G80 M3 / G82–G83 M4 Exhaust System

Single 3.5" Equal-Length Mid-Pipe + Optional Valved Axle-Back (T304 Stainless or Grade 5 Titanium)

Overview

The G80/G82/G83 is a phenomenal M car—its soundtrack just needs to catch up. Our single 3.5" equal-length mid-pipe unlocks the character the S58 deserves without requiring changes to the OEM rear section. Add the Valvetronic Designs valved axle-back for even more presence and control.

Compatible with OEM downpipes or free-flow front pipes, this system is engineered to deliver a higher-pitch, refined note with zero check-engine lights.

Sound With Free Flow Downpipes:

Sound With Stock Downpipes:

Why It Works

- Equal-length design: Balances exhaust pulses for a smoother, higher-frequency tone.

- Single 3.5" mid-section: Optimized flow for improved response and power throughout the rev range.

- Modular by design: Pairs with OEM or aftermarket rear sections; upgrade path to our valved axle-back at any time.

Sound & Control

- With stock downpipes: Noticeably crisper, more engaging tone without drone.

- With our valved axle-back (optional): Quad-chamber muffler and OEM-style valves deliver daily-driver civility closed, and an aggressive, motorsport edge opened—at the touch of a button.

- No CEL: System is designed to avoid check-engine lights.

Construction & Options

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

- Weight savings: Up to –57.8 lb (Titanium) or –24.7 lb (Stainless) vs. factory.

- Craftsmanship: Precision TIG welds, fully mandrel-bent tubing, and included cross brace for rigidity.

- Tips: Premium double-wall or single wall tips included.

Valve Integration

- Electronic valve control with included controller for rapid open/close.

- OEM integration available if you prefer factory valve control behavior.

Fitment

- 2020+ BMW G80 M3

- 2020+ BMW G82 M4 (Coupe)

- 2020+ BMW G83 M4 (Convertible)

Installation Notes

- Mid-pipe and axle-back can be installed independently.

- When installing only a mid-pipe or axle-back, make the rear-section cut at the second dimple on the OEM pipe to ensure proper fitment.

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

- CLICK HERE FOR INSTALL GUIDE

Compatibility Notice (V3 Systems)

- V1/V2 components are not compatible with V3.

- The V3 mid-pipe includes additional clearances at the downpipe connection and mid-section; small visible gaps prior to tightening are normal and by design.