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PAC Racing - PAC-1227 - 1.539 Dual Valve Springs (16)

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The price includes any freight from the supplier to the Store

Product description

Valve Spring - 1200 Series Circle Track - Dual Spring / Damper - 500 lb/in Spring Rate - 1.130 in Coil Bind - 1.539 in OD - Set of 16

Additional information
Outer Diameter: 1.539 in
Outer Inner Diameter: 1.125 in
Outer Damper: Yes
Inner Diameter: 0.731 in
Installed Height (Valve Closed): 1.950 in
Seat Pressure @ 1.950 in: 200 lbs
Open Pressure @ 1.250 in: 550 lbs
Spring Rate: 500 lb/in
Max Valve Lift: 0.700 in
Coil Bind Height: 1.110 in

Recommended components:
Retainers (PAC 300 Series): R315
Retainers (PAC 500 Series): R515
Retainers (PAC 600 Series): R615
Spring Seats: S117, S118

Application notes:
General endurance spring for high-lift flat tappet camshaft applications.

racingsprings.com

Vendor Part Number: PAC-1227

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 105 x 89 x 384 mm.

Spring Type
Dual

Weight
2,7 kg(The product may have a light retail packaging.)

Availability
Available to order from the supplier. Estimated time of arrival to us 7 - 15 day`s from order, at the earliest 13.8.2026.

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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