Milltek OPF/GPF Bypass Resonated For Millek Sport System - BMW G80 | G81 M3 | G82 M4 Gearknob Additional 55 hp on a

Additional 55 hp on a stock vehicle

250 mm x 165 mm x 40 mm / 9

3 Series G20 - 318i

750 mm² / 136

Rear 02 Sensor Delete for cars running high flow catalytic converters or decat

Milltek OPF/GPF Bypass Resonated For Millek Sport System - BMW G80 | G81 M3 | G82 M4 Gearknob Additional 55 hp on aOPF GPF Bypass Resonated Fits to OE Downpipes & Milltek Sport OPF GPF Back System Only Requires OPF Bypass Module or Stage 2 ECU Tune Our range of Cat Back systems are perfectly suited to cater for anyone looking to improve their sound and aesthetics, designed as a direct replacement for the original system, available in multiple configurations enabling the owner to choose the increase in volume of their exhaust and or add a more suitably aggressive