Stage 4 turbocharger upgrade — a full-billet precision-engineered turbo solution for the Mercedes-AMG GT63 / GT63 S (C192 · M177) 4.0L twin-turbo V8. Built around Precision 58/76 ball-bearing compressor wheels for the absolute maximum in spool response and sustained high-boost power. Target: 1,350HP+.
Supplied as a complete bolt-on kit with every fitting and line needed — steel-braided oil and coolant lines, billet-aluminum adapters, all couplers and clamps included. Reuses the stock wastegate assembly for reliability.
- Precision 58/76 ball-bearing turbos: Rapid spool and sustained high-boost capability
- Power target: 1,350HP+ with supporting modifications
- Cast aluminum compressor housing: Lightweight, heat-dissipating design
- Cast Inconel turbine housing: With internal wastegate assembly
- Complete install kit: Steel-braided oil and coolant lines, billet adapters, all fittings
- Fitment: Complete bolt-on for GT63 / GT63 S C192
- Fuel: E85 / race fuel required
- Warranty: 1 year
Supporting Hardware Required
- M177 Forged Rods & Pistons — required for Stage 4
- M177 Ported Cylinder Heads — recommended for Stage 4
- Upgraded fuel system — injectors, fuel pump, E85-compatible lines
- Stage 4 ECU Calibration — mandatory, matched to turbo output
- CPC Unlock — required before any ECU calibration
Ships worldwide. Sold by YPG Motorsport.
Frequently Asked Questions
What power can the Stage 4 Turbo reach on the AMG GT63?
With supporting modifications and a full YPG ECU calibration, the Stage 4 Turbo on the GT63 / GT63 S M177 targets 1,350HP+. E85 or race fuel required.
Is this a bolt-on upgrade for the GT63?
Yes. Complete bolt-on kit for the GT63 / GT63 S (C192 · M177). Uses factory mounting points — no modifications required. Kit includes all oil and coolant lines, billet adapters, and couplers.
Does Stage 4 require forged internals?
Yes. At 1,350HP+ the factory M177 rods and pistons are beyond their design limit. YPG M177 Forged Rods and Pistons are required for Stage 4 builds.