Fewer Coils, Same Strength. . . That's the MX Advantage! Integra uses an exclusive VMX Alloy not found in other racing springs. This allows Integra MX springs to be manufactured up to 30% lighter and have up to 30% more stroke, yielding up to 1. 25" more travel before coil bind than other springs. This gives you a lighter, more linear spring, with added travel before coil bind. All Integra springs are guaranteed to remain within 1% square and 2% of free height for the life of the spring!Features: High tensile lightweight VMX alloy Rate etched Maximum stroke design Lifetime guaranteePit Stop USA offers Integra Racing Shocks and Springs 310-2510-275MX, Integra 10" MX Coil-Over Spring - 2-1/2" I.D - 275 lb. at low everyday prices. Be sure to check out all of our products from Integra Racing Shocks and Springs including Integra Racing Shocks and Springs Integra 10" Coil-Over Springs and more.