Benzhou YY50QT-21A 50 4T 2016. Front outer pulley. V-belt pulley - 139QMB / QMA.
Front Outer Pulley Qmb 139 Fits ATU City Star 2009-2010
Front Outer Pulley Qmb 139 Fits Giantco Sprint 50 2009-2012
Front Outer Pulley Qmb 139 Fits Ecobike BT49QT-12C1 50 2008-2010
Front Outer Pulley Qmb 139 Fits Ecobike BT49QT-12F 50 2008-2010
Front Outer Pulley Qmb 139 Fits Ecobike BT49QT-12D 50 2008-2010
Front Outer Pulley Qmb 139 Fits Sachs 49er 50 2005-2008
