Manufacturer: Skunk2 Racing
Part Number: 311-05-1380
Condition: New

Product Description:

Alpha Series Valve Spring Set - Honda / Acura K-Series

Manufactured exclusively from super-clean, chrome-silicone wire milled in Japan, Skunk2's Alpha Valve Springs for Honda's K20/ K24 & F20C/ F22C VTEC engines are a product of the company's years of racing and engine building experiences. By using inner and outer springs mated together through a slight interference fit and with differing frequencies, Alpha Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm.

Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.

When using Skunk2 Titanium Retainers on 2004 and newer engines, pre-2004 locks (keepers/cotters) must be used! Pre-2004 keepers can be identified by the absence of marks along the top edge (2004 and newer keepers feature laser-etched marks along the top edge). Proper retainer/lock selection is important due to varying angle ratios between earlier and later lock designs. Use of improper retainers and/or locks may result in serious engine damage.

Seat Pressure: 60 lbs at 1.600"
Open Pressure: 220 lbs at 1.100"
Coil Bind: 1.000"

Must Use Skunk2 PN 312-05-0010 (Spring Bases) to Install Dual Springs in Single Spring K Series Heads or Install These Springs in F20C/F22C Engines

  • Springs milled in Japan from super clean chrome-silicon wire
  • Prevent valve float and maintain valvetrain stability at engine speeds in excess of 11,000 rpm
  • Heat-treated, shot-peened, and chemically polished for strength and durability
  • Seat Pressure: 60 lbs at 1.600" | Open Pressure: 220 lbs at 1.100" | Coil Bind: 1.000"
  • Skunk2 valvetrain components provide exceptional performance, reliability, and quality

    • Additional Information:

    Title Description: Alpha Series Valve Spring Set - Honda / Acura K-Series

    Notes: Note: When using Skunk2 Titanium Retainers on 2004 and newer engines, pre-2004 locks (keepers/cotters) must be used! Pre-2004 keepers can be identified by the absence of marks along the top edge (2004 and newer keepers feature laser-etched marks along the top edge). Proper retainer/lock selection is important due to varying angle ratios between earlier and later lock designs. Use of improper retainers and/or locks may result in serious engine damage.

    Seat Pressure: 60 lbs at 1.600�
    Open Pressure: 220 lbs at 1.100�
    Coil Bind: 1.000�

    Must Use Skunk2 PN 312-05-0010 (Spring Bases) to Install Dual Springs in Single Spring K Series Heads or Install These Springs in F20C/F22C Engines

    Guaranteed Fitments:

    Year From: 2002
    Year To: 2010
    Make: Honda
    Model: Civic
    Engine Code: K Series|K20A|K20Z|K24A|K24Z|F Series|F20C|F22C



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