K-MOTION DUAL VALVE SPRING 1.550" OD 636LBS/IN RATE SINGLE

240 Lbs @ 2.000" ( 2.110 TOP )
600 Lbs @ .610" Lift
630Lbs @ .652" Lift
660Lbs @ .706"Lift / With .162" BCB
Rate is 636
Measured with Manley Steel Or Titanium 10 deg retainer