◆主なメーカー
ATS
http://www.ats-speeddrive.com/
Fallbrook Technologies
http://www.fallbrooktech.com/
NC-17
http://www.nc-17.de/
pinion GmbH
http://www.pinion.eu/de/
schlumpf innovations
http://www.schlumpf.ch/
SHIMANO
http://www.shimano.com/
SRAM
http://www.sram-imotion.com/
Sturmey Archer
http://www.sturmey-archer.com/
Rohloff
http://www.rohloff.de/
Nuvinci
http://www.fallbrooktech.com/nuvinci.asp

◆前スレ
内装変速　10段目
http://yuzuru.2ch.net/bicycle/kako/1303/13030/1303046365.html