Skunk2's Pro Series XP (Extra Pressure) racing valve springs raise seat pressure for turbocharged and extreme high-rpm K-series i-VTEC builds, running 100 lbs. at 1.600 in. while preserving coil-bind height for high-lift cams. Wound from super-clean chrome-silicone wire milled in Japan, the dual inner and outer springs prevent valve float and hold valvetrain stability past 11,000 rpm. Sold as a set of 16.
| Type | Pro Series XP racing dual valve springs |
| Material | Super-clean chrome-silicone wire (Japan) |
| Seat Pressure | 100 lbs. at 1.600 in. |
| Open Pressure | 255 lbs. at 1.100 in. |
| Coil Bind | 0.890 in. |
| Max Lift | 0.680 in. |
| Included | Set of 16 |
| Fitment | Honda/Acura K-series i-VTEC (K20, K24, F20C, F22C) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2006 | Acura | RSX | Base |
| 2002-2006 | Acura | RSX | Type-S |
| 2004-2008 | Acura | TSX | Base |
| 2003-2005 | Honda | Accord | DX |
| 2003-2007 | Honda | Accord | EX |
| 2007 | Honda | Accord | EX-L |
| 2003-2007 | Honda | Accord | LX |
| 2006 | Honda | Accord | LX Special Edition |
| 2005 | Honda | Accord | SE |
| 2007 | Honda | Accord | Special Edition |
| 2006-2007 | Honda | Accord | Value Package |
| 2008 | Honda | Civic | MUGEN Si |
| 2002-2011 | Honda | Civic | Si |
| 2002-2009 | Honda | CR-V | EX |
| 2007-2009 | Honda | CR-V | EX-L |
| 2002-2009 | Honda | CR-V | LX |
| 2005-2006 | Honda | CR-V | SE |
| 2003-2004 | Honda | Element | DX |
| 2003-2011 | Honda | Element | EX |
| 2004-2011 | Honda | Element | LX |
| 2007-2010 | Honda | Element | SC |
