Harrop Stage 4 410 kW

Since 1955, Harrop has engineered and manufactured world-class performance products for a diverse range of applications. Whether it is original equipment for Ford, Holden & Lotus or premier motorsport categories such as F1, NASCAR & V8 Supercars, or our proprietary aftermarket performance products; our reputation is legendary.

The Harrop Stage 4 package for the LS3 V8 Commodore is designed for drivers chasing a serious lift in performance, sound and attitude, with outputs around 410 kW at the flywheel. By significantly improving airflow in and out of the engine through a Harrop over-the-radiator cold air intake, free-flowing exhaust system, 4-into-1 headers and high-flow catalytic converters, the LS3 is primed for its next step. A carefully matched performance camshaft and upgraded valvetrain then transform the engine’s character, delivering harder acceleration, a stronger mid-range and an unmistakable top-end surge. Each vehicle is custom calibrated on the dyno for 98 RON fuel and validated on the road to ensure crisp throttle response and refined drivability.

Key Features:

• 410 kW / 720 Nm* ( Standard: 304 kW / 570 Nm )
• Harrop OTR Cold-air intake system
• Harrop Facia & Side Infill Panels
  
• Harrop Performance Camshaft, kit multiple grind options available.
• Stainless Steel 4 into 1 long tube headers, with 1 ⅞" primaries.
• Hi-Flow Catalytic converters 
• Harrop 3" Stainless Steel Cat-Back exhaust system (Factory Bi-Modal options available)
• Harrop ECU Recalibration (calibration only available when fitted through Harrop Performance Centre)

Vehicle Applications:

• Holden Commodore, VFII 6.2 lt. V8 (LS3) models only.
• HSV E-Series / Gen-F LS3 variants only.

* All output values quoted are measured at the flywheel and estimate only