Can an internal upper CC cup be swapped on the frame with an external lower CC cup if you have an 1 1/8 reducer plate? Or are the bearings different sizes?
Point being to have adjustable geometry via the headset cups...Any way to go about it?
Mtbr's 2016 Winter Biking GearReviews and Roundups
Results 1 to 4 of 4
Thread: Another headset question