CTS TURBO STAGE 2+ TURBOCHARGER UPGRADE FOR F97/G80 BMW X3M/X4M/M2/M3/M4 WITH S58 ENGINE

CTS Turbo Stage 2+ Twin Turbo Kit – BMW S58

Supports 825–900+ WHP | Factory Fitment | No Core Required

Unleash the full potential of your BMW S58 engine with the CTS Turbo Stage 2+ Twin Turbo Kit, engineered for serious performance without compromising daily reliability. Designed as a direct bolt-on with OEM fitment, this complete kit delivers up to 900whp with supporting mods — all while retaining your stock wastegates, downpipes, intakes, and charge pipes.

Built from the ground up using transient flow analysis, flow bench testing, and the experience of countless CTS turbo projects, this setup maximizes spool, power, and efficiency — no custom fabrication, no cores required, and no compromises.

🔧 Key Features:

• Brand-New Set of 2 Turbos – No core exchange or downtime

• Bolt-On Journal Bearing CHRA – Heavy-duty bearings and enlarged thrust surfaces for durability

• Billet 11-Blade Compressor Wheel – 53mm inducer / 70mm exducer w/ 72.6mm extended tip

• 9-Blade Mar-M 246 Superalloy Turbine Wheel – 52mm inducer / 49.4mm exducer

• High-Flow 316 Stainless Steel Exhaust Housings – Larger housings reduce WGDC and improve spool

• VSR Balanced to Exceed OE Tolerances

• Retains Factory Wastegates – Must be calibrated using ISTA+ (90% WGDC max)

• Stock Fitment – Works with all OEM-position intakes, downpipes, charge pipes, and installation hardware

• No Custom Parts Required – Fully reversible and compatible with all factory systems

📈 Performance Potential:

• Power Output: 825–900+ WHP (with tuning and supporting mods)

• Boost Efficiency: High airflow at lower boost levels = less stress, more power

• Further Gains: Available with upgraded turbo inlets and fuel system enhancements

📦 What’s Included:

• (2) CTS Stage 2+ S58 Turbochargers

• Integrated journal bearing CHRAs

• All oil/water ports pre-configured

• Wastegate-ready housings (reuse your OEM actuators)

✅ Fitment:

• G80 BMW M3 / M3 Competition

• G82 / G83 BMW M4 / M4 Competition

• G87 BMW M2 (S58)

• F97 BMW X3M / X3M Competition

• F98 BMW X4M / X4M Competition

⚠️ Installation Notes:

• Professional installation and break-in required

• Wastegates must be calibrated via ISTA+ (limit WGDC to 90%)

• Custom tuning (e.g. Bootmod3) and supporting mods (fueling, upgraded intercooler) are required