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Pre-installed Headers – Comes with TunerView Data Header and Analog Input Header for easy integration
OEM-equivalent capacity - Maintains proper coolant levels without overflow issues
Gate spacing is adjusted independently from throw to help your further personalize shift feel
Replacing the inserts resolves this
4x M6 flanged nuts
Agency Power Race Downpipes - 10-12 BMW 135i 335i N55 Rear Plain Rotor Pre-installed Headers – Comes withAgency Power's downpipes are designed to improve your turbo charged vehicles performance. These pipes are made from polished 304 stainless steel. The N55 engine runs a single turbo setup as the predecessor to the N54 twin turbo engine. It connects to the single turbo like stock with a V Band clamp and then connects to the section 1 mid pipes. The downpipe has an inside diameter of 4? with 2. 5? flanges. The larger diameter design will improve exhaust