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This reduces the airflow space under the vehicle by 2 centimeters
No error message - even without software adjustments
- Installation instructions in paper form / alternatively via download "here" /english version: "here"- Appraisals for Mounting approval according to 19(3) StVZOO valid for pre-facelift + facelift model
M The intended effect: an aggressive
GRAIL order with installation at FLOW DOWN®
Grail Abgasanlage passend für BMW 1er M140i F20 / F21 (B58) – Klappenanlage 4_ABGASTECHNIK This reduces the airflow spaceGrail exhaust system suitable for BMW 1 Series M140i F20 F21 (B58) Exhaust Valve System description The GRAIL exhaust system with flaps, suitable for the BMW 1 Series MThe 140i F20 and F21 with the B58 engine combines maximum six cylinder sound with full road legality. Thanks to ECE type approval, the system is registration free within the EU and ready to drive immediately. Handcrafted in Germany from L304 stainless steel. The B58 inline six cylinder
