Signature Composites
BMW G8X M3/M4 Catback Exhaust
Installation included at our Dallas–Fort Worth shop — you pay for the part, not the labor.
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Take your G8X valved exhaust system to the next level with a catback exhaust engineered to free up the S58 soundtrack and reduce back pressure compared to the restrictive factory system. Available in titanium or 304 stainless steel, it combines premium construction with a lightweight, motorsport-inspired design for improved flow and a more aggressive exhaust character.
- Titanium or 304 stainless steel construction
- Valved for switchable street/track sound
- Direct catback fitment — no modification required
- Aggressive exhaust design for a deeper, more pronounced tone
- Mandrel-bent piping for optimal flow
A premium catback upgrade designed to unlock a more aggressive S58 sound while improving exhaust flow and delivering a true motorsport-inspired feel.
SKU SC.G8X.EXH.CB.TI
Will this fit my car?
Check the fitment information below for supported years and models. Not sure? Contact us with your exact year, make, and model and we'll confirm fitment before you order.
Do you offer installation?
Yes — we're a full-service shop in the Dallas, TX area. Reach out after ordering and we'll get your install scheduled.
What if I need to return or exchange a part?
See our Returns & Exchanges page for full details, or contact us and we'll make it right.
- BMW G80 M3 2021–2027
- BMW G82/83 M4 2021–2027
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