Front springs...

[fraze11]

Just posting in case anyone is in the market...decent price;

http://cgi.ebay.com/ebaymotors/PROGRESSIVE-FORK-SPRINGS-PAIR-30-45-111128-/230587009531?pt=Motorcycles_Parts_Accessories&hash=item35b00e89fb

[chilloutdamnit]

How do these compare with the sonics and adjusting the preload with a spacer?

[the mole]

They're for a KLR600, do they fit a GS?

[fraze11]

The part numbers all match, these likely fit a few different models but they only listed the one.  As per the GSTwin Wiki...these are the same ones;

http://gstwins.com/wiki/index.php?n=Upgrades.FrontSprings

[Pelikan]

How do these compare with the sonics and adjusting the preload with a spacer?

I think for all practical purposes the race tech and sonic are identical (both linear, etc.).