Scope of delivery: - 2x stainless steel downpipes for BMW 335i E91, E92, E93, 135i E82 E88, ø 76mmProduct description: The 76mm downpipe significantly reduces backpressure, relieving the turbocharger, which in turn results in more power and lower exhaust gas temperature. The post-cat sensor may have to be programmed out. The downpipe is made of stainless steel except for the flanges, which are made of steel so they don't warp, thus preventing leaks. The flange faces are machined. Four M18x1.5mm lambda sensor connections are welded in.Compatible with: - BMW 135i E82, E88 Convertible and Coupe N54 engine - BMW 335i E90, E91, E92, Convertible, Coupe and Touring N54 engineRegistration: For individual approval under §21 StVZO, please contact your TÜV inspector.Please note that installation of this item constitutes a modification which invalidates the vehicle’s type approval under the StVZO. Use on public roads is not permitted.