Originally Posted by PlannBee
This is the largest I've seen. Forgot the user's name, he was out of Florida. I just Googled to find this image. 4" quad tips.
This is my neighbor heritage drummer.his quads are 4 inches and now his BMW is pushing 560whp dyno proven totally pushed by ASR tuning. That's a totally custom built exhaust and u don't wanna know the $$$ but the sound is incomparable