Supertech Dual Valve Springs for 2012-2015 Honda Civic Si K24Z7 Engines
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Supertech Dual Valve Springs for 2012-2015 Honda Civic Si K24Z7 Engines

$222.99
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Dual Valve Springs for 2012-2015 Honda Civic Si K24Z7 EnginesSet of 16 Dual Valve SpringsSPR-H1000D-Z7Outer Spring: OD 29.65mm - ID 21.85mmInner Spring: OD 20.50mm - ID 15.50mmType: Dual SpringPress.Seat: 67lbs @ 36.4mmMax Lift: 15.70mmCoil Bind: 20.70mmRate: 11.50mmSPR-H1005D-Z7Outer Spring: OD 29.65mm - ID 21.85mmInner Spring: OD 20.50mm - ID 15.50mmType: Dual SpringPress.Seat: 80lbs @ 36.4mmMax Lift: 15.70mmCoil Bind: 20.70mmRate: 11.50mmSPR-H100DR-Z7Outer Spring: OD 30.20mm - ID 22.20mmInner Spring: OD 22.20mm - ID 16.80mmType: Dual SpringPress.Seat: 86lbs @ 33.4mmMax Lift: 14.90mmCoil Bind: 18.50mmRate: 12.50mmNote: These Dual Valve Springs require the use of Supertech Retainer Part # RET-K24Z7/T1 - (Sold Separately)Our valve springs are computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue. We also utilize computer software that allows us to ensure that the harmonics are under control. All Supertech valve sprin

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$209.95 $222.99 (+$13.04)