Harrop Stage 4 570 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 category 1 motorsport such as F1, NASCAR & V8 Supercars, or our proprietary aftermarket performance products, our reputation is legendary.

Proudly designed and manufactured in Australia, Harrop offer a range of packages engineered specifically to unlock the potential of the LSA powered HSV model range. Impressive performance gains can be achieved with our stage 1, 2 & 3 kits, which represent excellent bang for your buck, but If you need to take it that step further then our stage 4, Harrop 570 package just might be the one for you.

The Harrop Stage 4 package for the Gen-F LSA Commodore is engineered for drivers chasing extreme performance, delivering outputs of around 570 kW at the flywheel. The upgrade increases airflow, cooling efficiency and boost through a Harrop cold air induction system, revised cooling components and a higher-drive supercharger pulley with upgraded hub and coupling, supported by high-flow fuel injectors. Exhaust flow is improved via a full stainless steel system with 4-into-1 headers, while a carefully matched performance camshaft and overdrive harmonic balancer further elevate boost, torque and top-end power. Each vehicle is custom calibrated on the dyno for 98 RON fuel and validated on the road to ensure sharp throttle response and controlled, confidence-inspiring drivability.

Key Features:

• 570 kW / 1070 Nm* ( Standard 400 kW / 671 Nm )
• Harrop Cold-Air Induction System
• High Flow Injectors
• Supercharger drive pulley
• Performance balancer and overdrive pulley assembly
• 160 degree thermostat
• LSA Solid Coupling 
  
• Performance camshaft kit upgrade including Camshaft, Dual valve springs, push rods, cam gear and bolts
• 1 ⅞" Stainless Steel 4 into 1 long tube headers
• 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)

Additional extras that may be required:

• Fuel pump upgrade 

Vehicle Applications:

• HSV Gen-F & Gen-F2, LSA models only

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

* Advertised package pricing may vary depending on vehicle age and condition, and is subject to any additional parts, repairs, or labour required that fall outside the listed Performance Package inclusions.