N55 F-Chassis BBT800 Turbo Kit

🔥 BigBoost Stage 3 Bottom Mount Turbo Kit – Budget-Friendly, Race-Proven

At BigBoost, we’ve built a reputation for combining high performance with exceptional reliability, and now we're bringing that expertise to a budget-friendly Stage 3 bottom mount turbo kit — without cutting corners on quality or engineering.

✅ What’s Included:

• Twin-Scroll Exhaust Manifold

  • 1.5″ runners for balanced flow across all 6 cylinders

  • Designed for fast spool and top-end performance

• 3.4 6554 Turbocharger of Choice

  • Perfectly matched for Stage 3 builds

• External Wastegate & Dump Tube

  • Precision control of boost and back pressure

• 2-Piece 3″ Turbo Inlet

  • Optimized for airflow and fitment

• Boost Pipe (Charge Pipe)

• Billet Aluminum Intercooler Coupler

• Hard Pipe for Cooling System

• 4-Ply Reinforced Silicone Hoses

  • Extreme heat and pressure resistance

• Coolant Hose Kit

• Stainless Steel Braided AN Oil Feed Lines

  • Aviation-grade materials for reliability

• Turbo Oil Drain Adapter

• Silicone Oil Drain Hose

• All Stainless Steel Hose Clamps

• V-Band Clamp for Secure Turbo Connection

🧪 Why Go Stage 3 with BigBoost?

• Track-Tested Engineering
  Our kits have been pushed to the limit with intensive in-house testing, including individual cylinder EGTs and exhaust back pressure monitoring.

• Safe Power Delivery
  We consistently achieve 1.11–1.12:1 back pressure ratios, keeping your engine in the safe zone while delivering massive power.

• OEM Fitment Simplicity
  No need to relocate key components — this kit is designed for straightforward installation and maximum reliability.

⚠️ Note: Blow-Off Valve (BOV) kit not included — can be added separately.