5 Zigen Downpipe : R35 GTR

5 Zigen downpipe for R35 GTR. SUS304 stainless, 80mm piping merged to 70mm flange. 5 Zigen chooses massive 80mm downpipes to keep backpressure away from the turbine, which improves power response and acceleration. 5 Zigen recommend this downpipe to be installed with their Y-pipe for best performance gain.