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COMP Cams 959-1 Dual Valve Spring OD - 1.645

(Ford F-150 1975-79, Mustang 1969-71, F-250 1975-79, 1983-95, Thunderbird 1968-76, F-350 1975-79, 1983-95, Galaxie 500 1969-74, F-100 1979 + 30 more models)

Part of: COMP Cams Dual Valve Spring OD

Other options in this family: COMP Cams 995-1 COMP Cams 994-1 COMP Cams 938-12

Manufacturer

Picture for manufacturer COMP Cams

Part Number

959-1
10 reviews
Sale Price

$50.95

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The COMP Cams 959-1 is a high-performance dual valve spring designed to deliver exceptional valve train control and durability in demanding engine applications. This precision-engineered valve spring features a 1.645" outer diameter and .871" inner diameter, providing the strength and stability required for modified camshafts and increased lift profiles.

Key Specifications:

  • Outer Spring Diameter: 1.645" O.D.
  • Inner Spring Diameter: .871" I.D.
  • Spring Configuration: Dual spring design
  • Seat Height: 2.000"
  • Seat Pressure: 236 lbs at 2.000"
  • Spring Rate: 580 lbs/in
  • Maximum Lift: .775"
  • Coil Bind: 1.130"
  • Open Pressure: 671 lbs at 1.250"

Features and Benefits:

  • Manufactured from Super Clean™ wire for superior material quality and consistency
  • Dual spring design provides increased strength to handle extreme stress applications
  • Extensive quality control testing ensures reliable valve train stability
  • No damper design for lightweight operation
  • Exceeds expectations of professional engine builders and racers

The dual spring configuration creates a stronger valve spring assembly that can easily handle the increased lift found in high-performance camshaft applications. Each spring is manufactured to stringent tolerances and subjected to rigorous quality control processes to ensure consistent performance and long service life. Sold individually.

Products specifications

Fits

Ford F-150 1975-79, Mustang 1969-71, F-250 1975-79, 1983-95, Thunderbird 1968-76, F-350 1975-79, 1983-95, Galaxie 500 1969-74, F-100 1979, Fairlane 1970, Ranchero 1970-77, Torino 1970-76, Falcon 1970, E-350 Econoline 1975-95 + 25 more models

Number of Springs

2

Inner Spring Inside Diameter

0.859

Coil Bind Height

1.13

Outer Spring Inside Diameter

1.186

Outer Spring Outside Diameter

1.66

Seat Height

2

Seat Pressure

236

Compatible Spring Cup (O.D. Locator)

4702-1

Compatible Shims

4786

Compatible .570" Guide Diameter Spring Seat

4786-1

Spring Rate

580

Compatible Retainer

739-1

Damper

No

AMAZON ASIN

B00062Z9OO

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

Yes

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exemption Reason

No impact on pollution output of vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

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