Skunk2 Racing 305-05-0220 Tuner Series Stage 1 Camshaft for Acura Honda K20A2 Engines

✅ Engine Compatibility

Designed specifically for:

• K20A2

Commonly found in:

• Acura RSX Type-S

• Honda Civic Si

⚠ Not for K20A3 or K24 variants without verifying compatibility.
⚠ ECU tuning required.

Skunk2 Racing’s “Tuner Stage 1” Camshafts are designed as a performance upgrade to stock or near stock vehicles running the 3 Lobe VTEC K20A/ K20A2/ K20Z1/ K20Z3 and K24A2 engines or cylinder heads. These camshafts will outperform the stock and Skunk2 DIC (Drop-In Camshaft) camshaft from 4,500 rpm to redline with no loss in drivability. A great match for vehicles with an intake, header, and exhaust! Tuner Stage 1’s require a simple valve spring and retainer upgrade due to the additional lift, duration and increased RPM range.

🔧 What Skunk2 K20A2 Stage 1 Camshaft Delivers

Compared to stock cams:

• Increased lift

• Optimized duration

• Improved high-RPM breathing

• Stronger i-VTEC engagement

Designed for builds that rev to 8,000–8,500 RPM without turning the car into a dyno queen only.

Our Tuner Stage 1’s incorporate Skunk2 Racing’s cutting-edge Fast Ramp and AMAX features, which are responsible for increasing overall performance, producing unmatched response from idle to redline. You can expect optimized mid-range and top-end horsepower/torque with peak power moved up the RPM band, producing a seamless VTEC crossover!

Fast Ramp – The same technology used in Formula One racing, where seat timing is reduced, which results in additional cylinder pressure and more torque but without compromising valve-train longevity.

🏁 Ideal Supporting Mods

To unlock full gains:

✔ Performance header
✔ Intake manifold upgrade
✔ 70mm+ throttle body
✔ Upgraded valve springs (recommended)
✔ Hondata K-Pro or standalone tuning

No tune = minimal gains. Possibly worse drivability.

AMAX – A Skunk2 design that simply maximizes the area under the lift curve but without compromising reliability or valve-train stability. Skunk2’s profiles feature more duration than competitors’ at lifts above 1mm, resulting in greater efficiency and more power.

⚙ Expected Performance Gains (Properly Tuned)

• Stronger midrange torque

• Noticeable top-end improvement

• Smoother VTEC crossover

• Better throttle response

Perfect for NA street builds targeting reliable 220–230+ HP setups.

Independent tests have shown average gains to be in the neighborhood of +18-20 horsepower with really nice gains in mid-range horsepower and torque! Tuner Stage 1 cams are an easy install but we highly recommend checking all critical clearances and degreeing for peak performance.

🔩 Skunk2 K20A2 Stage 1 Camshaft Installation Notes

• Degree cams properly

• Verify piston-to-valve clearance

• Check installed spring height

• Adjust valve lash

• Retune immediately

K-series tolerances are tight. Precision matters.

Performance upgrade to mildly modified vehicles running 3 Lobe VTEC K20 / K24 engines
Fast Ramp & AMAX Technologies
Horsepower Gain: 18-20 Torque Gains: 15-18
Intake – Lift: 13.5mm/ Duration 266° Exhaust – Lift: 12.5mm/ Duration 262°
Intake Centerline – Variable Exhaust Centerline – 107°
Valve Clearance Intake / Exhaust – .008” / .010” RPM Range: 1,500 – 8,200
i-VTEC Settings – Small Lobe 35° Advance/ Big Lobe 40° to 30° Advance
Require a simple valve spring and retainer upgrade due to the additional lift, duration and increased RPM range
Fitment: 2006 – 2011 Honda Civic 2.0L Si, 2004 – 2008 Acura TSX 2.4L Base K24A2 and 2002 – 2006 Acura RSX 2.0L Type S