Your greatest guess is to measure. Take one front nut and one rear nut to a ironmongery shop and see what dimension bolt fits kent bike. 9mm and 10mm are the most likely, but 12mm and 3/8″ are also attainable. Kent Womens Mountain Bike Unless you make a giant leap up the price list, the… Continue reading Crankset How To Choose Out A Alternative Rear Derailleur