Springs processed to reduce the amount of spring pressure loss from running in the engine.
Only lose between 0.2-0.6 lbs of pressure verses 0.8 – 1.2 lbs in other springs.
This will allow the engine to run a higher RPM before experiencing uncontrolled valve float.
Pre-Set option checked to meet AKRA Tech guidelines
Spring Pressure: 10.6-10.8 lbs @ .850″ 17.8-18.0 lbs @ .650″
Yellow Stripe Spring Set
Stronger than the Green Stripe spring, and slightly more durable than the Red Stripe spring.
These springs on average will lose less than .2 lbs of spring pressure over the course of 4-5 races in a typical AKRA/NKA prepped engine and has become a preferred spring for builders.
The Yellow Stripe spring is one of the best “All Around” springs on the market. This spring must be checked/set to meet AKRA or NKA rule requirements, they may not pass tech out of the pack.
Red Stripe Spring Set
Strongest 10.8 lb spring on the market.
This Heavy Duty spring will allow the engine builder to custom fit their spring to their particular build. Having been through a specific process, which will reduce the amount of spring pressure loss from running in the engine, this spring will allow the engine to run a higher RPM before experiencing uncontrolled valve float.
This spring is considered a “Builders Spring” and will not test legal without being set.
Springs should be checked prior to installation to insure they meet rule requirements.
Spring Pressure: 11-11.5lb @ .850″ 19-19.5lb @ .650″
