Additional information
Outer Diameter (Bottom): 1.445 in
Inner Diameter (Bottom): 1.186 in
Outer Diameter (Top): 0.990 in
Inner Diameter (Top): 0.731 in
Installed Height (Valve Closed): 1.950 in
Seat Pressure @ 1.950 in: 175 lbs
Open Pressure @ 1.300 in: 440 lbs
Spring Rate: 408 lb/in
Coil Bind Height: 1.220 in
Max Valve Lift: 0.700 in
Recommended components:
Retainers (PAC 300 Series): R313
Retainers (PAC 500 Series): R513
Spring Seats: S112, S113
Application notes:
High performance valve spring for street and strip use.
racingsprings.com
Vendor Part Number: PAC-1255X
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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Check also: leveringsbetingelser