AFE: Twisted Steel Street Series Down-Pipes BMW X5 M (F85)/X6 M (F86) 15-19 V8-4.4L (tt) S63 4.125" there may be interference with

there may be interference with the factory suspension on 1958-60 model Corvettes

The PHR006 features BMR’s CNC-machined center adjuster

Formula Ford to Formula One and have been ran on every Indianapolis 500 winner since 1965

consider our "resonator delete" option

this is your solution to a true return fuel system capable of supporting 800-1200 rwhp

AFE: Twisted Steel Street Series Down-Pipes BMW X5 M (F85)/X6 M (F86) 15-19 V8-4.4L (tt) S63 4.125" there may be interference withAdd dyno proven power and unique sound to your BMW X5 X6 M with this Twisted Steel Street Series down pipe with high flow converter. 3 1 2" 3" mandrel bent, brush finished 304 stainless steel tubing and high flow catalytic converters improve exhaust flow to deliver increased horsepower and torque. This one piece designed, direct fit down pipe also features a factory style V band flange, heavy duty flex tube and factory O2 sensor and auxiliary ports so