PAC Racing designed these PAC-1200 Valve Springs for Circle Track racing applications. These 1200 Series springs are manufactured from a premium alloy that outperforms automotive industry standards. PAC Racing processes these springs to aerospace shot-peening standards to allow for superior fatigue performance.

PAC Racing's proprietary process ensures that these valve springs will withstand the rigors of street performance and mild racing applications.

PAC Racing PAC-1200 Valve Springs Specs:

• Number of Springs Per Valve: Single
• Valve Spring Style: Standard
• Maximum Valve Lift: 0.550 in.
• Outside Diameter: 1.244 in.
• Outer Spring ID: 0.860 in.
• Middle Spring ID: N/A
• Inner Spring ID: 0.770 in.
• Installed Height: 1.750 in.
• Coil Bind Height: 1.100 in.
• Spring Rate: 450 lbs./in.
• Spring Open Height: 1.250 in.
• Spring Open Load: 350 lbs.
• Load At Installed Height: 125 lbs.
• Damper Spring Included: Yes
• Retainers Included: No
• Valve Springs Coated: No
• Valve Stem Seals Included: No
• Locks Included: No
• Quantity: Sold as a set of 16

PAC: The World’s Premier Valve Spring Manufacturer!