Supertech 02-05 Civic Si Dual Valve Spring: 92 psi
Part Number: SPR-M1007D-K2
Inside Continental United States
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Supertech performance valve springs are made with premium Superclean Chrome Silicon Vanadium Steel Alloy for higher performance and durability. Computer designed to ensure that wire stress levels do not overpass the limits for long durability under extreme conditions and harmonics are well under control.
Dual Valve Spring: 92 psi (K20A3, K24A3)
Outer Spring 28.1mm OD / 20mm ID
Inner Spring 20mm OD / 15.2mm ID