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PAC Racing - PAC-1283 - 1.250 Valve Springs - Ovate Beehive (16)

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The price includes any freight from the supplier to the Store

Product description

Valve Spring - 1200 Series - Ovate Beehive Spring - 363 lb/in Spring Rate - 1.080 in Coil Bind - 0.845 in / 1.250 in OD - Set of 16

Additional information
Outer Diameter (Bottom): 1.250 in
Inner Diameter (Bottom): 1.085 in
Outer Diameter (Top): 0.845 in
Inner Diameter (Top): 0.680 in
Installed Height (Valve Closed): 1.750 in
Seat Pressure @ 1.750 in: 110 lbs
Open Pressure @ 1.150 in: 328 lbs
Spring Rate: 363 lb/in
Coil Bind Height: 1.080 in
Max Valve Lift: 0.600 in

Recommended components:
Retainers (PAC 300 Series): R310, R311, R362, R363
Retainers (PAC 500 Series): R510, R511

Application notes:
Viper SRT-10 drop-in valve spring. Fits stock retainers and seats.

racingsprings.com

Vendor Part Number: PAC-1283

Pac Racing Catalog -24
Pac Racing Catalog -15

Always verify specifications with the manufacturer and engine builder before final assembly.

The approximate size of the packed product or the sales package is 102 x 89 x 388 mm.

Spring Type
Beehive

Weight
1,4 kg(The product may have a light retail packaging.)

Availability
The product is currently not in stock at our warehouse. Available from our supplier. Estimated arrival at our warehouse 7 - 15 days from order, at the earliest 13.9.2026.

Delivery time?

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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