Just listed a pair of rear suspension springs for Arctic Cat snowmobiles from 1996-2001. 1996 ZR 580 EFI ETT -1996 ZR 440 1997 ZR 580 EFI 1997 ZRT 800 - 1997 ZRT 600 - 1998 ZR 600 EFI LE -1998 ZR 600 - 1998 ZR 500 - 1998 THUNDERCAT MC - (1604-382)-1998 ZRT 800 - (1604-382) 1998 ZR 600 EFI - 1998 THUNDERCAT - (1604-382) 1998 ZRT 600 - 1998 ZR 440 - 1998 POWDER SPECIAL 600 EFI LE -1999 ZRT 600 - 1999 ZR 600 - 1999 POWDER SPECIAL 700 LE - 1999 ZR 700 - 1999 ZR 500 EFI - 1999 POWDER SPECIAL 700 - 1999 ZR 600 EFI - 1999 ZR 500 - 1999 POWDER SPECIAL 600 EFI II LE - 2000 POWDER SPECIAL 2K - 2000 ZR 700 - 2000 ZR 600 -2000 ZRT 600 - 2000 ZR 600 EFI - LE REVERSE -2000 ZR 500 EFI - 2000 ZR 700 - LE -2000 ZR 600 EFI - 2000 ZR 500 - 2001 ZR 600 EFI -2001 ZR 500 - 2001 ZR 500 EFI - 2001 ZR 600 EFI LE -2001 ZR 600 -2001 ZR 600 VEV - http://dollykamco-the-private-collection.auctivacommerce.com/Arctic-Cat-Suspension-Springs-1604-051-LH1604-050-RH-P1148847.aspx