Evolution Racewerks Charge Pipe Kit — N20 / N26 (F-Series)
Evolution Racewerks two-piece charge pipe kit for the N20 and N26 four-cylinder turbo engines. The factory charge pipes are plastic, and under boost they are a known failure point — they crack or blow off the coupler and dump boost. This kit replaces both the upper (throttle-body) and lower runs with mandrel-bent aluminum.
What it is
Mandrel-bent 6061 aluminum. The upper pipe is stepped up to 2.75" against the factory 2.5", with a CNC-machined throttle-body flange and a CNC MAP-sensor flange. Two 1/8" NPT bungs come capped and ready for methanol, nitrous, or a boost reference. Beaded ends and T-bolt clamps hold the connections at pressure, and the kit retains the factory electronic diverter valve.
Finishes
Brush, Polish, or Type III hard-anodized black — choose above. The anodized finish is the most heat- and corrosion-resistant of the three.
Where it sits in the system
This is the complete charge-pipe path for the N20/N26 in one two-piece kit. On the six-cylinder cars the same job is split into separate Turbo-to-Intercooler (TIC) and Lower-Intercooler (LIC) sections — different platform, different parts.
Fitment
BMW N20/N26 — 320i/328i (F30/F31), 420i/428i (F32/F33/F36), 125i/M135i (F20/F21), and 228i (F22/F23). Confirm your chassis in the selector.




