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Catless downpipe & OPF/PPF removed are required
It is well known that the Primary cats are a major restriction point on the E9X M3
as well as all other leading race series including Le Mans
NGK uprated plugs are recommended
AST 20mm/25mm Lowering Springs - BMW F20 | F21 1 Series M135i | M140i GLA-Class (X156) Catless downpipe & OPF/PPF removedThe AST Lowering springs offer a solution to reduce your vehicles center of gravity while preserving the comfort youre accustomed to from the original equipment manufacturer (OEM) springs. These springs serve as a direct replacement for your OEM springs and have been developed especially for each vehicle specific. Crafted from premium materials using the best Wafios coiling machines. Their progressive design strikes the perfect balance between