Tein Flex-Z Coilover Kit 1998.05-2001.05 Nissan Skyline Non GT-R 25GT Super HICAS Equipped Car (ER34)Flex Z inherits all the features and quality of Street Flex but the adoption of a new platform allows its price to be set at amazingly low range for your 1998. 05 2001. 05 Nissan Skyline Non GT R 25GT Super HICAS Equipped Car (ER34). Flex Z, of course, maintains the long favored "Made in Yokohama" quality. Ride height adjustable shock absorber, fully loaded with Tein's comprehensive technology, is now more affordable prices than ever. Specifications;