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 suspensio n 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.