REDSTAR Performance Valvetronic Exhaust for BMW X5M E70 / X6M E71
Downpipes are not included in this kit. But you can get them with a discount for the combined order. You will get more deep and quiet sound when going with stock catted downpipes and more aggressive and loud with full catless setup.
Build to order. Production time up to 10 days.
Removing of factory catalytic converters will trigger a сheck engine light (can be eliminated with optionally O2 sensors restrictors). Firmware update recommended to get maximum performance gains.