🔥 VRSF 3.5” / 4.0” Catless & Catted Downpipe – N55 Engine (BMW F-Series)

Maximize power, sound, and flow with the VRSF high-performance downpipe upgrade for your BMW N55 engine. Designed to significantly reduce backpressure and turbo lag, this downpipe is available in catless or 200-cell high-flow catted configurations for both street and track performance.

⚙️ Key Features:

• 🧱 Premium 304-Grade Stainless Steel – TIG welded by hand for ultimate durability and corrosion resistance.

• 🌀 Mandrel-Bent Smooth Radius Piping – Minimizes turbulence, improves exhaust flow, and increases spool.

• 🔧 CNC-Machined Stainless Steel Flanges – Ensures a perfect, leak-free fit to your OEM or aftermarket exhaust system.

• 💥 Dyno-Proven Gains – Expect performance gains of 20–25 HP when paired with a proper tune.

• ✅ Available in Two Sizes:

  • 3.5” Downpipe – Balanced performance and fitment

  • 4.0” Downpipe – Maximum flow for high-power builds

• 🛡️ VRSF Lifetime Warranty – Backed by VRSF’s industry-leading warranty for total peace of mind.

🛞 Fitment – N55 Engine Only

This VRSF downpipe is compatible with the following BMW models equipped with the N55 engine:

❗Note: Not compatible with M2 Competition (S55 engine).

🚨 Catted vs. Catless – What’s the Difference?