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Skunk2 Racing Pro XP Valve Springs
Valvetrain, Pro XP Series Valve Spring Set 02-11 Honda Civic Si K20/K24/F20C/F22C
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Estimated Ship Date: Nov 13, 2026
Overview
Brand:
Manufacturer's Part Number:
311-05-7380
Part Type:
Product Line:
Summit Racing Part Number:
SK2-311-05-7380
UPC:
873265006816
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.680 in.
Retainers Included:
No
Coil Bind Height (in.):
0.890 in.
Damper Spring Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Remanufactured:
No
Quantity:
Sold as a set of 16.
Notes:
Must use SK2-312-05-0010 spring bases to install dual springs in single spring K series heads, or install into F20C or F22C engines.
Skunk2 Racing Pro XP Valve Springs
Skunk2 Racing Pro XP valve springs feature a higher seat pressure for turbocharged and extreme high-rpm motors. They offer a higher seat pressure while keeping the coil bind height for higher lift camshafts.
The XP (Extra Pressure) springs are race-proven, dual valve springs produced exclusively from super-clean, chrome-silicone wire milled in Japan, while their design helps prevent valve float and maintains valvetrain stability at engine speeds in excess of 11,000 rpm. They are expertly wound, heat-treated, shot-peened, and chemically polished for durability and strength, resulting in lightweight valve springs that safely accommodate high-lift camshafts and feature superior resistance to load loss, even under extreme operating conditions. Choose the proper set of Skunk2 Racing Pro XP valve springs for your vehicle.
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