Eisenmann’s Valvetronic axle-back for the G82 M4 (S58, 2021+) gives full control over tone - quiet at cruise, fierce under load. Designed for UK-spec GPF and non-GPF models alike - no warning lights, no emissions compromise.
Complete slip-on system: resonator delete pipes, clamps and hardware included
EC Type-Approved: fully road legal in UK and EU, certificate supplied
Slant-cut carbon fibre tips with polished stainless inner sleeves - subtle but unmistakable
No welding or fabrication needed. Fits M4 and M4 Competition xDrive as standard
