Supertech Dual Valve Springs for 2006-2011 Honda Civic Si K20Z3 Engines
Supertech Dual Valve Springs for 2006-2011 Honda Civic Si K20Z3 Engines

Supertech Dual Valve Springs for 2006-2011 Honda Civic Si K20Z3 Engines

Regular price
$179.99
Sale price
$179.99
Unit price
per 
Shipping calculated at checkout.

Dual Valve Springs for 2006-2011 Honda Civic Si K20Z3 Engines

Set of 16 Dual Valve Springs

SPR-H1019D
Outer Spring: OD 30.00mm - ID 21.80mm
Inner Spring: OD 21.30mm - ID 15.60mm
Type: Dual Spring
Press.Seat: 97lbs @ 40.4mm
Max Lift: 17.70mm
Coil Bind: 22.70mm
Rate: 14.80mm

SPR-H1021D
Outer Spring: OD 30.00mm - ID 21.80mm
Inner Spring: OD 21.30mm - ID 15.50mm
Type: Dual Spring
Press.Seat: 95lbs @ 40.4mm
Max Lift: 17.70mm
Coil Bind: 22.70mm
Rate: 13.20mm

SPR-H1022D
Outer Spring: OD 30.00mm - ID 21.80mm
Inner Spring: OD 21.00mm - ID 15.50mm
Type: Dual Spring
Press.Seat: 80lbs @ 40.4mm
Max Lift: 18.30mm
Coil Bind: 22.00mm
Rate: 11.20mm

Note: These Dual Valve Springs require the use of Supertech Retainer Part # RET-HBK-ST or RET-K20A2/T2 - (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 springs are made with premium super clean Chrome Silicon Vanadium Steel alloy for higher performance & durability at high rpms. Using high quality steel alloy also provides the added benefit of better structural memory for all of our springs, giving your performance racing engine a serious competitive advantage.