Supertech Dual Valve Spring 80Lbs@36.4mm SPR-H1005D +RET-K24Z7/T1 + SEAT-H1020DS+ keeper

Fits:

• 2nd Gen Acura TSX
• 9th Gen Honda Civic Si

This Complete Set Includes:

• 16 Dual Valve Springs
• 16 Titanium Retainers.  

Specs:

• Inner Spring (OD/ID): 20.5mm / 15.5mm
• Pressure (Seat): 80lbs@36.4mm
• Pressure (Open): 220lbs@12.5mm
• Outer Spring (OD/ID): 29.65mm / 21.85mm
• Coil Bind: 20.7mm
• Rate: 11.5lbs/mm
• Max Net Lift: 15.7mm