PAC-1238X

PAC-1237X RPM 1200 Series Racing Dual Valve Springs

$489.80 Set of 16, Free Shipping

PAC Racing Springs Model PAC-1237X is a High Frequency High Lift Dual Spring for Roller Cam Applications. Designed for most aftermarket cylinder heads with 1.274″ diameter dual springs and camshafts with up to .750″ lift.

  • 1200 Series Dual Spring
  • Optimized for aggressive valvetrains
  • High lift abusive applications
  • 1.274″ OD
  • .630″ ID
  • .700″ Max lift
  • 585 lbs./in. Rate
  • 1.045″ Coil Bind Height
SKU: PAC-1237X-16 Category: Tags: , , ,
Part#PAC-1237X
Alt Part# PAC-1237X-16
DescriptionRPM Series Dual Valve Spring RACE ONLY Spring
Outside Diameter1.274″
Outer Spring ID0.900″
Middle Spring IDN/A
DamperNo
Inner Spring ID0.630″
Install Height1.800″
Load at Installed Height250
Spring Open Height1.100″
Spring Open Load585
Recommended Valve Lift.700″
Spring Rate (lbs/in)550
Coil Bind (max)1.045″
Weight3.8 lbs
Dimensions16 × 4 × 3.5 in

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