I recently added a Rekluse to my 250, and it really made a big difference in how well my bike handles the trails. My son rode it, and really liked it as well. He asked if we could add one to his 125. Rekluse doesn't make a clutch for the KX 125, so I contacted Tom at Enduropilot.com to see if he had any ideas. He did some research, and he thinks the KX 250F model will work. He offered a sixty day trial to test. If it works out, I'll post and let you guys know.
On another note, I continue to be impressed with Enduropilot.com. Tom is a really nice guy, and takes very good care of you.