System installed in less than an hour, everything fit well after proper adjustment. The clamps are heavy duty and take a little extra tightening to get em to seal. Sound quality is great if you’re looking for a deeper tone and high turbo whistle. Did not have to cut or modify. 99 F350 Crew Cab. Would recommend 100%.

Great product. Good fit and finish. Easier installation than the ding dongs on the forums would lead one to believe. 7.3/ZF6

4 inch exhaust from turbo to exhaust pipe diamond IThe hangers that were welded on the pipes were close with the 4 inch clamps that they had for the unit was no good I had to go by band clamps and install them on the unit

Put the exhaust on my bone stock 2001 7.3 . Took me My buddy 2 blades in the saw and about 1 hour of work . As far as power noticed a drop at take off because of less backpressue on the turbo my guess . But great flow and sound. Super stoked I purchased this product from riff raff ! Would reccomend to anyone that wants a little more whistle and sound from the exhaust while dropping egts !

Installation was simple and easy. Had to cut to fit my cab and bed combination, which was interesting. But I cannot blame the product as I didn't read the instructions. The piping is solid and good looking. Clamps/hangers, not so much. The hanger hooks were not in the ideal locations and them just being basic U-bolt clamps is not also not ideal. But for the price, I am extremely pleased.