WP SR1228 Spring kit
Wilkes Performance solid roller spring kits. Using made in house Wilkes Performance titanium retainers.
Kit includes, Wilkes Performance titanium retainers, PAC 1228 springs, ID locators, 10 degree machined locks, valve seals
PAC Racing’s 1200 Drag Race Dual Springs are perfect for sportsman-level racers looking for a quality product without breaking the bank. They are constructed of our signature PACaloy super clean wire and heat-treated in-house for precise spring rates and enhanced strength. They also go through a multi-peen process to optimize service life.
- Built using our signature PACaloy super clean wire to ensure strength and durability
- In-house heat-treating for precise spring rates and increased strength
- Multi-peen process to optimize service life
Technical Specs
Outside Diameter: 1.625
Outer Spring ID: 1.175
Middle Spring ID: N/A
Damper: no
Inner Spring ID: 0.851
Install Height: 2.100
Load at Installed Height: 280
Spring Open Height: 1.200
Spring Open Load: 847
Recommended Valve Lift: 0.900
Spring Rate (lbs./in): 629
Coil Bind (max): 1.100