For E82 1M, E82/E88 135i, E90-E93 335i and E89 Z4 35i (LHD only) with the N54 engine. Not for RHD or N55.
Stage 1-2 fast road or track day upgrade: gains +41 whp and +39 wtq on stock turbos, no tune needed. Includes wire-reinforced silicone hoses, powder-coated brackets, OEM-spec coolant tank relocation and full plug-and-play extension harness with weatherproof connectors.
Choose 1.75in flange (601-0026) or 2in flange (601-0027)
Zero hose collapse - high-temp, vacuum-rated silicone
Fits with basic tools and mechanical confidence - no cutting or soldering
