1200 Series Drag Racing Springs
1.550 Dual
0.800 Lift
Set of 16

Pro-Alloy Mechanical Roller Valve Springs
Style: Dual
Outer O.D.: 1.550"
Closed Pressure: 209 @ 1.900"
Open Pressure: 525 @ 1.300"
Coil Bind: 1.080"

Max Effort Mechanical Roller Valve Springs
Dual
1.500
1.116
0.800
170 @ 1.800
445 @ 1.250
480
0.700

PAC 1200 Series Drag Racing Valve Springs
Style: Dual
Outer O.D.: 1.550"
Closed Pressure: 240 @ 1.900"
Open Pressure: 625 @ 1.200"
Coil Bind: 1.150"

Max Effort Mechanical Roller Valve Springs
Dual
1.437
1.080
1.080
0.796
175 @ 1.750
400 @ 1.150
375 0.625

1200 Series Drag Racing Springs
1.625 Dual
0.850 Lift
Set of 16

Pacaloy Mechanical Roller Springs
1.550 Dia
240 @ 1.900 Seat
625 @ 1.200
1.100 Coil Bind

Max Effort™ Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.557"
Closed Pressure: 225 @ 1.950"
Open Pressure: 555 @ 1.250"
Coil Bind: 1.150"

Electro Polished Pro-Alloy Mechanical Roller Valve Springs
Style: Dual
Outer O.D.: 1.550"
Closed Pressure: 209 @ 1.900"
Open Pressure: 525 @ 1.300"
Coil Bind: 1.080"

Max Effort Mech. Roller Valve Springs
Dual w/Damp
1.539
1.125
1.015
0.731
194 @ 1.920
505 @ 1.200
510
0.720

1200 Series Drag Springs
1.625 Dual
280 @ 2.100
847 @ 1.150
629 Rate
1.100 Coil Bind
0.900 Max Lift