Circuit Sports O2 elimination downpipe is truely a work of art. The downpipe consist of cast stainless turbo elbow (with divider flow plate) constructed one piece with the downpipe to the cat. In addition the bottom of the downpipe is made to allow good ground clearance with its "flat out bellow" design (one does not have to worry about crushing their downpipes anymore that's often associated with traditional 3" downpipes) since the downpipe sits paralleled with the car's under frame.

To make the install easier, CS now includes new stainless studs and nuts that can faciliate the install of the downpipe.

This downpipe works for all major T25 bottom mounted turbos (T25, T28, S15 turbo, GT2871R, GT25R (25/40)). For turbo with built in divider plate at the turbine section, grinding down the downpipe divider plate is necessary to fit.

For use with the fat style SR20DET O2 sensor (find in our OEM SR20DET parts section).