Additional information
Outer Diameter: 1.244 in
Outer Inner Diameter: 0.860 in
Outer Damper: Yes
Inner Diameter: 0.770 in
Installed Height (Valve Closed): 1.750 in
Seat Pressure @ 1.750 in: 125 lbs
Open Pressure @ 1.250 in: 350 lbs
Spring Rate: 450 lb/in
Max Valve Lift: 0.550 in
Coil Bind Height: 1.090 in
Recommended components:
Retainers (PAC 300 Series): R349
Retainers (PAC 600 Series): R649
Application notes:
Fits stock pocket without machining.
racingsprings.com
Vendor Part Number: PAC-1200
Pac Racing Catalog -24
Pac Racing Catalog -15
Always verify specifications with the manufacturer and engine builder before final assembly.
If the product is available at the Vantaa warehouse, it can be picked up or delivered—usually already within the same day.
When the product shows an estimated delivery time of 7–15 days, this is how the supplier‑warehouse order progresses.
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