Campagnolo 10 Speed Centaur Chainring 34 Tooth Aluminium Cranks 2011 - 2014 FC-CE334Variant sold out or unavailable Campagnolo 10 Speed CT Chainring 34 Tooth Record and Chorus 2005 - 2008 FC-RE034Variant sold out or unavailable Campagnolo 10 Speed Chainring 39 Tooth 135mm Record 10 2000 -2003 / Chorus 10 2004 - 2006 / Record and Chorus 7 / 8 / 9s FC-RE039Variant sold out or unavailable Campagnolo 8 / 9 / 10 Speed Chainring 39 Tooth 135mm Record 10 2004 - 2008 / Chorus 10 2007 - 2008 FC-RE139Variant sold out or unavailable Campagnolo 10 Speed CT Chainring 50 Tooth Record and Chorus 2005 - 2008 FC-RE250Variant sold out or unavailable Campagnolo 10 Speed Chainring 53 Tooth Record 10 2004 - 2008 / Chorus 10 2007 - 2008 FC-RE553Variant sold out or unavailable