Ive just sold my hollowbites. f**king amazing cranks, nice an stiff, lightweight, look the tits! Also, i have a profile rear bmx wheel for sale if your interested Will probably be a 19mm euro bb in the frame you have now. Freecoasters are ok i guess, feel really weird to start off with though. can set the bit inside the hub to engage quicker though if you want, just threads along the axle.