Originally Posted by
rallyebmx
Does the keep off .21-4 use a different size rear bearing than the keep off ..21-xl?
yeah the 21-4 has a 14mm crankshaft and 21-7 has a 14.5mm crankshaft.
Also Novarossi have started messign with the bearing sizes again just so people can't buy 3rd party bearings on the cheap.. "patented".. ugggh...