'00-'09 Honda (AP1 AP2) S2000 Spring Rate: (Linear) Front: 8.0 K - (comfort) Rear: 8.0 K - (comfort)
2013.5-on Lexus (GSE3) IS350 / IS250 - (2013 and earlier IS (GSE2) use 14016103) *(not compatible with AWD models)
'06-'13 Lexus (GSE2) IS250-IS350 *( 2013.5 -on use 1016104 ) *(not compatible with AWD models)
'08-'15 Lexus (USE) IS-F Spring Rate: (Linear) Front: 15.0 K - (performance spec) Rear: 10.0 K -(performance spec)
'08-16 Mitsubishi (CZ4A) Evolution X Spring Rate: (Linear Front & Rear) Front: 9.0 K Rear: 9.0 K
03-08 Nissan (Z33) 350Z Spring Rate: (Linear Front & Rear) Front: 10.0 K Rear: 9.0 K
'09-17 Nissan (Z34) 370Z Spring Rate: (Linear Front & Rear) Front: 10.0 K Rear: 9.0 K
Toyota 86 ZN6 (4U-GSE) or Subaru BRZ ZC6 (FA20) Spring Rate: (Linear) Front: 6.0 K Rear: 7.0 K