BMW B46 Downpipe Upgrade for Rvng F & G US Models

The RVNG Competition Series 4" Downpipe is built for the BMW B46 four-cylinder turbo, fitting 2016+ models including the 230i, 330i, 430i, 530i, X3 30i, X4 30i, and Z4 30i/20i. The B46 is the U.S.-spec engine and differs from the B48 found in EU and Asia-spec cars, so please confirm your vehicle's year, make, model, and engine before ordering.

Key features

• Average gains of 14-16whp (varies with supporting mods)
• Torque gains around 20wtq on stock boost, up to over 24wtq with software
• Faster turbo spool and improved throttle response
• Mandrel-bent 4" piping for a smooth transition into the exhaust
• 100% stainless steel with TIG-welded joints
• CNC-machined turbocharger V-band flange and an upgraded straight-flow ball-joint flange
• Stainless steel flex section that mimics the factory design
• Retains the factory ball-type V-band connector; works with factory or aftermarket exhausts
• Available in mirror polish or brushed finish, with an optional high-temp black thermal coating
• Complete installation hardware included

Fitment

2016+ BMW models with the B46 engine: 230i, 330i, 430i, 530i, X3 30i, X4 30i, Z4 30i / 20i. Installation difficulty: 3 of 5.

Backed by the RVNG RaceWorks limited lifetime warranty.

Emissions disclaimer: This product is not legal for sale or use on pollution-controlled vehicles operated on public roads and is intended for off-road, race, or closed-course competition use only. You are responsible for compliance with all applicable emissions laws; use on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws. Please check your local laws before purchase and installation.

Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.