Integra Front Spring 5 x 9 1/2 Tall 500LB - 310-5095-500 From durability tested, premium wire materials to specifically designed procedures which guarantee precision manufacturing, Integra springs provides you with a well-engineered durable spring that ensures your springs will be there before and after the race. Integra coils are guaranteed to remain 2% of original free height for as long as you own them.