GRAIL 3-inch valved exhaust system for BMW M3/M4 (F8x), designed to deliver a sharper, more balanced sound with improved exhaust flow. The optional Equal-Length (EQL) setup creates a smoother, more refined tone by equalizing exhaust paths.
Specifications:
System type: Valved cat-back exhaust
Diameter: 3-inch performance piping
Material: L304 stainless steel
Valve system: Electronic valve control
Option: Equal-Length (EQL) midpipe
Compatibility:
Suitable for BMW M3 (F80)
Suitable for BMW M4 (F82 / F83)
Fits OPF and Non-OPF models (variant dependent)
Features:
Equal-Length option for smoother, balanced sound
Dual-mode exhaust (quiet / aggressive)
Improved exhaust flow and response
ECE-approved for road use
Handcrafted in Germany
Ideal for drivers seeking a more refined and aggressive S55 sound with improved performance.
Rebecca Diaz (verified owner) –
The exhaust note turns heads everywhere I go.
Olivia West (verified owner) –
Would definitely recommend this exhaust upgrade.
Kenneth Martin (verified owner) –
The exhaust looks as good as it sounds.
Jessica Simmons (verified owner) –
The system feels solid and well-built.
Joshua Jackson (verified owner) –
Noticeable improvement in throttle response.
Robert Smith (verified owner) –
No issues at all since installation.
Jeremy Rivera (verified owner) –
Excellent craftsmanship and attention to detail.
Austin James (verified owner) –
The sound is aggressive without being overwhelming.
Walter Morgan (verified owner) –
Everything lined up perfectly during install.
Brian Perez (verified owner) –
Installation was quick and hassle-free.
Kenneth Martin (verified owner) –
Improved both sound and performance noticeably.
Richard Garcia (verified owner) –
Installation was quick and hassle-free.
Dennis Campbell (verified owner) –
Everything lined up perfectly during install.
Nicholas Young (verified owner) –
The sound is exactly what I was looking for.
Sean Gray (verified owner) –
Very high-quality construction and finish.
Sean Gray (verified owner) –
Completely transformed the driving experience with a sportier sound.