Thanks Clay, let me help a little bit.
Rekluse makes Core EXP for the GG 250/300 and it is $899. The system uses your stock outer basket and friction plates, but the rest of the clutch system is Rekluse. The center hub, steel plates, EXP disk, pressure plate, bolts and springs, and clutch cover are all included. All of our parts are made in house (Boise, Idaho) from high quality materials and hard anodized for extra durability. These clutches are being used by the GG Factory off road team in Europe by Ivan Cervantes and Christophe Nambotin and in the U.S. by Cole Kirkpatrick with great success and durability.
The EXP ($399) system is simply the EXP disk and some pressure plate springs mated to your stock clutch components. At this time, Rekluse has not released EXP for the GG. Through our extensive testing program in Europe, Rekluse EXP with the OEM components does not meet our durability criteria.
I hope this helps clear up any confusion and we appreciate your support.
IdahoJoe
www.rekluse.com