COMP Cams 26028-16 Race Extreme 1.686" OD Triple Springs, 2.200" Installed Height, 16 Springs

A set of three nested valve springs designed for elite race applications, the COMP Cams 26028-16 features an outer diameter of 1.677 inch with middle and inner diameters of.872 inch and.635 inch respectively. The Race Extreme series springs support a maximum lift of 1.000 inch and operate in the 9,000-10,000 RPM range, making them well-suited for roller cam applications in Pro Stock, Competition Eliminator, marine, and tractor pull engines. With a coil bind height of 1.161 inch, seat height of 2.2 inch, and spring rate of 712 PPI, these springs deliver the performance needed for demanding competition use.

• Valve Spring Series: Race Extreme
• Number of Springs: 3
• Outer Spring Outside Diameter: 1.686 IN
• Outer Spring Inside Diameter: 1.203 IN
• Inner Spring Inside Diameter: 0.864/0.624 IN
• Seat Height: 2.2 IN
• Seat Pressure: 342 PSI
• Coil Bind Height: 1.161 IN
• Damper: No
• Compatible.570" Guide Diameter Spring Seats: 4786-16
• Compatible Retainer: 739-16
• Compatible Shims: 4756
• Compatible Spring Cup (O.D. Locator): 4708-16
• Spring Rate: 712 PPI
• C.A.R.B. Exemption Reason: No impact on pollution output 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. 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.
• C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.