Grail BMW M3/M4 G8x Exhaust

BMW M3/M4 G8x (G80, G81, G82, G83 – ab 2021)

Next-gen turbo sound – made to lead, not follow.

Bring out the true voice of your G8x M3 or M4 with our GRAIL full cat-back exhaust system – precision-built for the latest generation of BMW’s high-performance M models. Whether you drive a G80 Sedan, G81 Touring, G82 Coupé or G83 Convertible, this system delivers aggressive character, refined tone, and signature GRAIL quality.

Constructed from premium 1.4301 (V2A) stainless steel with high wall thickness, this setup ensures maximum durability, rich acoustics and minimal drone – even with the rear seats folded. The layout includes a full mid-pipe section and dual 3-inch axle-back pipes, perfectly tuned for flow and sound response on the S58 twin-turbo inline-six.

At the heart of the system are our CNC-machined GRAIL performance valves, offering two fully selectable sound modes:

• Closed Mode: Refined and restrained, perfect for everyday driving and cold starts.
• Open Mode: Deep, aggressive, turbocharged intensity – unmistakably M.

Installation is plug-and-play, with full compatibility across all G8x models. The system includes your choice of tailpipe tips – available in polished stainless steel or stealth black-coated finish – both engineered to align perfectly with the rear diffuser and enhance the M’s bold aesthetics.

Key Features:

• Full cat-back system for BMW M3/M4 G8x (G80, G81, G82, G83 – 2021+)
• 2x 3-inch axle-back pipes and optimized mid-pipe flow
• Premium 1.4301 stainless steel (V2A) with high wall thickness
• Drone-free, deep turbo sound across all rev ranges
• GRAIL CNC-machined performance valves with dual sound modes
• Tailpipe tips in stainless steel or black-coated finish
• 100% plug-and-play installation
• Handcrafted in Germany

Whether you’re carving corners or making a statement on the highway – this exhaust brings your G8x to life with sound, strength and total confidence.