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COMP Cams 728-1 Titanium Valve Spring Retainer 10 Degree 1.250" OD

Part of: COMP Cams Titanium Valve Spring Retainer OD

Other options in this family: COMP Cams 729-1 COMP Cams 721-1 COMP Cams 738-1 COMP Cams 736-1 COMP Cams 722-1

Manufacturer

Picture for manufacturer COMP Cams

Part Number

728-1
10 reviews
Sale Price

$34.95

In Stock (6)

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Usually delivered within 2 days

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Product Details

The COMP Cams 728-1 is a precision-engineered titanium valve spring retainer designed for high-performance engine builds. This lightweight retainer features a 10-degree lock angle and is specifically designed to work with single valve springs with a 1.250-inch outer diameter.

Key Features:

  • Titanium construction reduces valvetrain weight for improved high-RPM performance
  • 10-degree lock angle provides secure keeper retention
  • 1.250-inch outer diameter spring compatibility
  • Single spring configuration design
  • Precision machined for consistent performance and proper valve spring geometry

Titanium retainers are a popular upgrade for racing and high-performance street engines where reducing reciprocating mass is critical. The lighter weight allows for higher engine speeds while reducing stress on valve springs and improving valvetrain stability.

Products specifications

Diameter 3

0.735

Diameter 1

1.24

Valve Spring Diameter

1.25

Compatible Lock

638-1

Valve Stem Size

All

Diameter 2

0.87

AMAZON ASIN

B002EE07B2

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.

Lock Angle

10

Retainer Material

Titanium

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