Sometimes cramping is nutritional...........calcium allows muscles to relax, magnesium allows them to contract....they (calcium and magnesium) are electrolytes......it would not hurt to go to the health food store and get a good CalMag supplement. It works for me. Drinking a lot of coffee can mess up youir magnesium balance. No guarantees, but it may be worth a try.

 

Could it be that when you are riding your lower torso is too tense? Years ago I used to work at a Honda dealer and I remember taking out the used super bikes for a spin and my legs would cramp up in the exact same area very fast. In my case it was because I such a new rider I was very cautious and stressed about other vehicles around me so I would tense my legs up so much they would cramp at my hips.

 

I get similar problems. I am 6' 3" and really have to bend my legs it seems. I get cramps sometimes when I sit to long, really sucks. I get a sore back also. Just part of riding a bike like ours I guess......