COMP Cams - 26921-1
Race Street 1.320" OD Dual Spring; 1.770" Installed Height; 1 Spring
COMP Cams Dual Valve Spring, 1.300" OD, 135 lbs 1.770", 400 lbs 1.120", Single Piece
Dual Valve Springs from COMP Cams are manufactured from Super Clean wire and subject to extensive quality control testing to deliver a valve spring assembly with superior strength, durability and valve train stability, no matter what the application. The dual spring design creates a stronger valve spring that can easily handle the increased lift found in extreme stress applications. COMP Cams Dual Valve Springs exceed the expectations of today's engine builders and racers.
Compatible Shims: 4753
Compatible Spring Cup (O.D. Locator): 4709-1
Damper: No
Inner Spring Inside Diameter: 0.655
Number of Springs: 2
Outer Spring Inside Diameter: 0.895
Outer Spring Outside Diameter: 1.32
Seat Height: 1.77
Seat Pressure: 135
Spring Rate: 408
Amazon ASIN: B001GBSKAY
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. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year 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 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. Exemption Reason: No impact on pollution output of vehicle.
C.A.R.B. E.O. Number: N/A
Coil Bind Height: 1.04
Compatible .570" Guide Diameter Spring Seat: 4731-1
Compatible Retainer: 754-1