I run a set on my track bike, but they get removed for track riding. Only reason is I've been too lazy too adjust the dish on the rear for the wider spacing. Overall I have nothing but good things to say about them(165mm length!) two piece makes clean-up REALLY easy. You can get correct chainline with these if you move the spacers on the rear axle to the left side and re-dish the wheel. Almost forgot, the reason Shimano will/can't make external bearing cranks is NJS and they aren't in the business of making non-NJS track parts. Cartridge bearings are not allowed and new technologies must first be phased in that is to say reasonable time is given for all ranks to test/buy/acquire new items. With all the recent changes who knows we might see them in a few years....
Last edited by seitenryu; 01-03-08 at 03:57 AM.