Mungkin disini ada yg udah pernah coba modif body freehub 10 speed ke 11 speed ? Kayak begini contohnya ( maaf bahasa nya bukan bahasa indonesia soal nya saya copy paste ) : 1. First, you must chuck up the hub in a lathe and indicate in so you know that it's true and spinning perfectly straight. We did this by chucking up the hub and fitting a pin through the shaft hole of the hub. It's best to use a pin, so that you know you're indicating off of a perfect cylinder. The pin should fit snugly in the hub with NO wobble 2. Before turning the lathe on, move the cutting tool in to the surface of the splines. You don't want to cut into the splines very deeply. But I've found the splines are not perfectly cylindrical, so there will be some re-surfacing of some of them. Then, slowly move the tool up to (what I'll call) the shoulder of the hub. This is the surface that the largest cog rests against. At this point you want to ZERO the tool, so that you know how much you are taking off when your start cutting the hub. It might be helpful to turn the lathe by hand to make sure you have clearance all the way around. 3. Back the tool away from the shoulder. You can now turn the lathe on and slowly advance the tool by hand back to the shoulder. Since you ZEROed the tool at the shoulder, you'll know exactly how much metal you're removing. You'll want to remove .071", which is 1.8mm. 4. After you've cut the material away, back the tool away from the shoulder and turn off the machine. You can now remove the Hub from the lathe chuck. And your hub is now finished and ready to accept an 11-speed cassette. As you can see below, there is lots of material left over to support the cassette.