Skunk2 Ultra Stage 1 Camshaft Kit for 12-15 Civic Si

Skunk2 Ultra Stage 1 Camshaft Kit for 2012–2015 Honda Civic Si (K24Z7)

If your 9th gen Civic Si feels like it signs off too early, the Skunk2 Ultra Stage 1 Camshaft Kit is a great way to wake it up. Designed specifically for the K24Z7, these cams are all about adding usable power while keeping things simple and street-friendly.

The big win here is that these are true drop-in camshafts. No upgraded valve springs, no complicated teardown—just a clean install that works with the factory valvetrain. That makes this kit perfect if you want real gains without turning your daily driver into a full-time project.

Once installed, the engine pulls harder and keeps making power higher in the rev range. Skunk2 shifts the powerband about 1,000 RPM higher, which means the car doesn’t fall flat up top anymore. On naturally aspirated setups, gains in the 20–30 horsepower range are common, and if you’re boosted, the cams have the airflow to support 50+ horsepower increases with the right setup and tune.

The cams themselves are made from forged 8660 alloy steel, so they’re built to handle hard driving and long-term abuse. Whether you’re staying NA, planning boost later, or already running forced induction, these cams give your K24 the breathing room it wants.

Key Features

• Designed specifically for the K24Z7 engine
• Forged 8660 alloy steel construction for strength and durability
• Drop-in camshafts that work with stock valve springs
• Optimized lobe profiles for strong mid-to-high RPM power
• Works with naturally aspirated and forced induction setups

Performance Benefits

• 20–30 horsepower gains on naturally aspirated builds*
• 50+ horsepower potential on boosted applications*
• Powerband shifted approximately 1,000 RPM higher
• Stronger top-end pull without sacrificing drivability

Fitment

• 2012–2015 Honda Civic Si
• Engine: K24Z7 2.4L

If you want your Civic Si to keep pulling where the stock cams give up, the Skunk2 Ultra Stage 1 Camshaft Kit is an easy, proven upgrade. It’s the kind of mod you feel every time you stretch a gear—without making the car harder to live with.

*Power gains will vary depending on supporting modifications and tuning.