This is a set of Type-E Coilovers with Pillowball Upper Mounts for the CPV35 Infiniti G35 / Nissan Skyline 350GT from high-end suspension specialist, Aragosta.
Aragosta’s Type-E series of dampers are designed with both spirited street driving and comfortable cruising in mind. The Type-E includes several of high tech features of their Type-S and Type-SS high performance coilovers, including low-friction, WPC-treated inverted struts, height-adjustable Rana springs, specially formulated synthetic damper fluid and Aragosta’s unique low friction seals. Additionally, the Type-E features 12-step rebound adjustment knobs (not available for some vehicles) on the bottom of each damper, as well as pillowball upper mounts (camber adjustable mounts available for some applications).
WPC is a Japanese micro-shot peening process that greatly smoothens and strengthens materials on a microscopic level. For more information on WPC, refer to the link below on MotoIQ.com: http://www.motoiq.com/MagazineArticles/ID/3152/WPC-is-Neat-Stuff.aspx
Spring and Height Adjustment Specs:
Front Spring Rate = 11kg/mm; Front initial drop of -45mm and an adjustment range of +40mm〜-30mm
Rear Spring Rate = 8kg/mm; Rear initial drop of -30mm and an adjustment range of +30mm〜-15mm