Hey,

I wanted to replace the Bilstein's on the girlfriends 05 ZR2 and I am lost. I have found no less than a dozen part numbers and I believe I have only really confirmed the front part numbers.

My search started at Synergy Front - 24-014120 which some sites say is a Sport shock and some say is a HD shock. Either way that part number shows up more often than any other part number.

For the Rear it gets tricky. Synergy lists a 24-014137 which is listed as a sport shock everywhere else and a 33-187532 which is listed as a non ZR2 everywhere else. I wanted to stay with what I believe were the HD shocks unless there is a reason to change.

Shockwarehouse lists the same front but the rear is a 24-018197 which is the same number on Bilstein's site.

The odd thing about 24-018197 is you have to go back to a 2002 ZR2 to find that part number on any other site. I have part numbers from a half a dozen other sites as well.

I am told and have read on mulitple forums there is no difference in ZR2 shocks for any year. I wish I could find a data sheet with the extended and collasped lengths with travel. Bilstein doesn't seem to support any of these part numbers.

Anyhelp would be great.