QA1 offers an assortment of high travel springs with a black powder coated finish. Made in the USA, these 2 I.D. high travel springs are manufactured from specially designed high - tensile, chrome silicon alloy spring wire, which allows them to have fewer coils and a smaller wire diameter. As a result, these springs are lighter and have increased travel due to the larger distance between the coils. These lighter springs reduce unsprung weight and react faster, optimizing suspension performance. QA1's high travel springs are proudly made in the USA. All QA1 springs are lifetime guaranteed to remain within 2 of the original free height and rate under normal operating conditions.