Skunk2’s Ultra Series Camshafts for Honda’s K-series 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.

Up to 80 hp gains with Skunk2’s Ultra Series line of camshafts, Skunk's 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. What's more, Ultra Camshafts are also the perfect addition to any high-output, turbocharged engine.

Skunk2 camshafts deliver unparalleled power as a result of continual, extensive development and testing. By utilizing advanced manufacturing techniques and the latest computerized simulation and modeling equipment, Skunk2 camshafts are able to deliver maximum power across the entire powerband. Skunk2 designs and tests all of its camshafts in-house to ensure the highest quality and performance. Each camshaft is manufactured of forged tool steel core, increased torsional strength, improved durability characteristics, and reduced frictional effects. All Skunk2 camshafts are ground to exact specifications using state-of-the-art CNC cam grinding machines equipped with cubic-boron grinding wheels and feature hardened, wear-resistant lobes and surfaces.

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.

Skunk2 camshafts designs are the direct result of our years of drag racing and road racing efforts. In addition to each Skunk2 project car and race vehicle, the world’s top road racing and drag racing teams have relied on Skunk2 camshafts for years.

Requirements for all Ultra 1/2/3/4 Camshafts

• Skunk2 Pro Series Valve Springs (P/N 311-05-5380)
  Or
• Pro XP Valve springs (P/N 311-05-7380) recommended for Turbo applications
• Titanium Retainers (P/N 308-05-0410)
• Click HERE for K-series guideline camshaft chart

Ultra 1 Details

• Recommended: High-compression, upgraded fuel injectors.
• Intake Centerline: variable
• Exhaust Centerline: 112° BTDC
• Duration(Intake/Exhaust): 264°/264° @ 1mm
• Lift (Intake/Exhaust) : .540" @ 0.000" lash / .530" @ 0.000" lash
• Valve Clearance (Intake / Exhaust): .008” / .010”
• RPM Range: (varies)
• ** 3 Lobe Forged Tool Steel Core *

Ultra 2 Details

• Recommended: High-compression, upgraded fuel injectors.
• Intake Centerline: variable
• Exhaust Centerline: 112° BTDC
• Duration (Intake/Exhaust): 270°/270° @ 1mm
• Lift (Intake/Exhaust): .560" @ 0.000" lash/ .535" @ 0.000" lash
• Valve Clearance (Intake / Exhaust): .008” / .010”
• RPM Range: (varies)
• ** 3 Lobe Forged Tool Steel Core **

Ultra 3 Details

• Recommended: High-compression, upgraded fuel injectors.
• Intake Centerline: variable
• Exhaust Centerline: 112° BTDC
• Duration (Intake/Exhaust): 275°/277° @ 1mm
• Lift (Intake/Exhaust): .580" @ 0.000" lash/ .565 @ 0.000" lash
• Valve Clearance (Intake / Exhaust): .008” / .010”
• RPM Range: (varies)
• ** 3 Lobe Forged Tool Steel Core **

Ultra 4 Details

• Recommended: High-compression, upgraded fuel injectors.
• Intake Centerline: variable
• Exhaust Centerline: 112° BTDC
• Duration (Intake/Exhaust): 280°/283° @ 1mm
• Lift (Intake/Exhaust): .575" @ 0.000" lash/ .595" @ 0.000" lash
• Valve Clearance (Intake / Exhaust): .008” / .010”
• RPM Range: (varies)
• ** 3 Lobe Forged Tool Steel Core **