Remus Racing Cat-back System With Integrated Valve - BMW F20 | F21 M135i M3 (E30) When installing Akrapovic aftermarket optional

When installing Akrapovic aftermarket optional down pipes with sports catalytic converters or without catalytic converters

Lowers M235i | M240i Convertible Front: 20 mm / Rear: 20 mm

- Original tube Ø 80 mm / REMUS tube Ø 84 mm

This doesn't involve any electronic

Remus Racing Cat-back System With Integrated Valve - BMW F20 | F21 M135i M3 (E30) When installing Akrapovic aftermarket optionalATTENTION: RACING without homologation! Cat Back System for BMW 1 Series F20 F21 and 1 Series F20 LCI F21 LCI consists of: RACING sport exhaust centered for left right system front section front silencer L R tip set with integrated valve. The activation of the valve is carried out using the original actuator via the vehicle onboard electronics. Original tube 80 mm REMUS tube 84 mm Features Aggressive racing sound Shot blasted surface, 100% stainless