Skunk2 Racing 305-05-7030 Ultra 3 Camshaft for Acura Honda K Series

Skunk2 Ultra Series K-Series Camshaft Key Features

The Skunk2 Ultra Series camshafts are developed using advanced engine simulation and extensive dyno testing to maximize airflow and engine efficiency.

Specifications

• Part Number: 305-05-7030

• Product Line: Ultra Series Stage 3

• Engine Compatibility: Honda / Acura K-Series engines

• Application: High performance / race builds

• Material: Billet steel construction

• Design: Aggressive cam profiles for maximum airflow

These camshafts are engineered to increase valve lift and duration, allowing the engine to move significantly more air at higher RPM ranges.

Skunk2’s Ultra Series Camshafts for the Honda K20A, K20A2, K20Z1, K20Z3, and K24A2 engines dramatically increase both horsepower and torque yet retain complete valvetrain stability and exceptional engine response. Ideal for heavily modified engines, Ultra Series Camshafts are manufactured from proprietary, high-quality forged tool steel cores, are CNC ground, and feature patent-pending profiles with unique lobe shapes and revolutionary lift, velocity, and acceleration characteristics.

Performance Benefits

Upgrading to Stage 3 camshafts dramatically improves engine breathing and high-RPM performance.

Benefits include

• Increased horsepower potential

• Improved airflow through the cylinder head

• Higher RPM power band

• Stronger top-end acceleration

• Optimized valve timing for performance builds

When combined with supporting modifications like upgraded valve springs, intake systems, and engine tuning, these cams can significantly increase overall engine output.

Up to 80 hp gains with Skunk2’s Ultra Series line of camshafts, our professional line of high-lift, racing camshafts for Honda’s K Series VTEC engines. Ultra Camshafts are designed to optimize mid-range and top-end horsepower and torque, with peak power moved up the RPM band. As a result, VTEC crossover is seamless, allowing for the broadest powerband possible. No other line of racing camshafts even comes close to Skunk2’s Ultra Series.

Recommended Supporting Modifications

Because Stage 3 cams are aggressive, additional engine upgrades are typically required.

Common supporting mods include:

• Performance valve springs and retainers

• Upgraded cam gears

• High-flow intake manifold

• Larger throttle body

• ECU tuning

• Performance exhaust system

These upgrades ensure the engine can fully utilize the increased airflow provided by the camshaft.

Skunk2’s Ultra Series Camshafts also feature Fast Ramp and AMAX profile technology, which increases overall performance and results in unmatched response from idle to redline. AMAX technology simply maximizes the area under the lift curve but without compromising reliability or valvetrain stability. Skunk2’s profiles feature more duration than competitors’ at lifts above 1mm, resulting in greater efficiency and more power. And thanks to Fast Ramp, the same technology used in Formula One racing, seat timing is reduced, which results in additional cylinder pressure and more torque but without compromising valvetrain longevity.

Compatible Engines

The Skunk2 Ultra Series Stage 3 camshaft is designed for Honda and Acura K-Series engines, including:

• K20A / K20A2

• K20Z1 / K20Z3

• K24A / K24A2

These engines are commonly found in vehicles such as:

• Honda Civic Si

• Acura RSX Type-S

• Honda Accord K-series swaps

• Custom K-swap performance builds

Performance upgrade to heavily modified vehicles running 3 Lobe VTEC K20 / K24 engines
Manufactured from proprietary, high-quality forged tool steel cores
Designed to optimize mid-range and top-end horsepower and torque, with peak power moved up the RPM band
Fast Ramp & AMAX Technologies
Intake – Lift: .580″/ Duration 275° 0.000″ Exhaust – Lift: .565″/ Duration 277° 0.000
Intake Centerline – Variable Exhaust Centerline – 111°
Valve Clearance Intake / Exhaust – .008” / .010”
Fitment: 2006 – 2011 Honda Civic 2.0L Si, 2002 – 2006 Acura RSX 2.0L Base/Type S and 2004 – 2008 Acura TSX 2.4L K24A2
Fit type: Vehicle Specific

Why Choose the Skunk2 Ultra Series K-Series Camshaft?

Skunk2 Racing has been a leading name in Honda performance for decades. Their engine components are developed using real race-engine data and are widely used in high-performance street cars, drag builds, and time attack racing.

The Ultra Series camshaft lineup represents their most aggressive cam profiles designed for builders pushing the limits of the K-series platform.

Final Thoughts

The Skunk2 Racing 305-05-7030 Ultra Series Stage 3 Camshaft is designed for high-performance Honda and Acura K-series engines that demand maximum airflow and top-end horsepower. With aggressive cam profiles and race-inspired engineering, it’s a serious upgrade for builders chasing big power from their K-series setup.

Just remember: once you start installing Stage 3 cams, your engine build is officially no longer “mild.” At that point, you’re building something that wants to live near redline.