3″ Stainless Steel Racing Downpipes S63 2011 – 2018 BMW M5 & M6

Unlock serious performance gains for your BMW F10/F12 M5 & M6 (S63 Twin-Turbo V8) with these 3″ Race Downpipes. Designed with a full 3″ diameter up to the last couple of inches near the turbos, these downpipes eliminate the restrictive factory catalytic converters to reduce backpressure, speed up turbo spool, and unleash a more aggressive exhaust note. When paired with a tune, expect gains of up to +50–55 wheel horsepower and +60–65 wheel torque, making this one of the best bang-for-the-buck mods for your S63.

Unlike many competitors that neck down closer to the turbos, this design ensures maximum flow throughout the system for consistent power delivery. Handcrafted from 304-grade stainless steel, these downpipes feature mandrel bends, TIG welds, and CNC flanges for a precise fit, durability, and long-term performance on both LHD and RHD models.

Features

• Fitment: BMW S63 F10/F12 M5 & M6 (2011–2018)

• Performance Gains: +50–55 whp and +60–65 wtq (with tune)

• Design: Full 3″ diameter up to turbo outlets for maximum flow

• Construction: Handcrafted from 304 stainless steel, TIG-welded

• Flange: CAD/CAM-designed CNC flange for precise fitment

• Exhaust Note: Deeper, more aggressive tone with faster turbo spool

• Bends: Smooth radius mandrel bends to reduce turbulence and improve flow

• Fitment: Compatible with both RHD and LHD models; no modifications required