The Stage 5’s engine takes all the great qualities of the Stage 4 and introduces our proprietary engine girdle.  This engine package has been our go-to for max effort non-dry sump cars for years now and is still an industry leader in terms of performance and reliability.   Shooting for those record breaking horsepower numbers, but still want awesome response on the street? This is the engine you for you.


  • 1,900 Horsepower
  • 8,500 RPM
  • 4.1L Displacement


  • Approx Max HP: 1900
  • Max RPM: 8,500
  • Displacement: 4.1L
  • Block: OE Nissan with GT1R Girdle
  • Crankshaft: GT1R 94mm
  • Rods: Manley 300M Tri Beam
  • Pistons: GT1R Manley
  • Wristpins: GT1R DLC
  • Headgasket: Proprietary GT1R
  • Main Studs: Proprietary GT1R
  • Headstuds: Proprietary GT1R
  • Cylinder Head: CNC Ported
  • Valvesprings: Ferrea Dual
  • Valves: Ferrea 1mm OS
  • Camshafts: Spec'd to application
  • Misc: Cylinder Head modified for improved sealing

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