Round exhaust nut - polished SSt - M44.5 x 2 for worn thread ►see details
BMW part number: 18114090110.7
Stainless steel
NOTE: for the 2-cylinder models, the exhaust nut can only be replaced on after-market header pipes without crossover pipe.
On header pipes with crossover tube, it is not possible to replace the exhaust nut without cutting the seamed rim and welding a new one.
Shown in 4 exploded views
Motorcycle Model
Motorcycle Model
Main Group
Main Group
18 Exhaust system

