🔥 CTS Turbo High-Flow Catted Downpipes – BMW F80 M3, F82/F83 M4, F87 M2 Competition (S55)

Unlock true power and sound from your S55-powered BMW with the CTS Turbo High-Flow Catted Downpipes, engineered for maximum performance, durability, and seamless OEM integration.

These downpipes are a critical upgrade for enthusiasts looking to improve turbo spool, throttle response, and mid-range torque—all while maintaining emissions-friendly 200-cell high-flow catalytic converters.

💨 Performance You Can Feel

Developed with advanced 3D scanning and CAD flow simulation, CTS Turbo downpipes are designed to provide:

• ⚡ Faster turbo spool and better boost response

• 📈 Significant torque and power gains with Stage 2 software

• 🔊 Aggressive, motorsport-inspired exhaust note

• 🧩 Full compatibility with OEM or CTS mid-pipes

Perfect for spirited street driving or track use—without excessive drone.

🛠️ Engineered to Fit and Perform

Built to OE-level precision, these downpipes feature:

• ✅ Large 3" mandrel-bent piping for optimal flow

• 🔩 TIG-welded, food-grade 304 stainless steel for durability

• 🧪 Laser-cut flanges for perfect alignment

• 🧿 Factory-style O2 sensor locations for proper sensor function

• 🧠 Designed via CAD modeling and flow testing for optimized routing

📦 Vehicle Fitment:

⚠️ Note: Requires Stage 2 tuning (e.g. Bootmod3, MHD, etc.) to avoid Check Engine Light (CEL) due to increased flow from the high-flow catalytic converters.

🏁 Why Choose CTS Turbo?

✔️ Proven performance gains
✔️ Premium construction
✔️ OEM fit and finish
✔️ Designed, tested, and built by enthusiasts, for enthusiasts