Bbb bcr 37 10 speed compactgear shimano chainring silver
The bbb bcr 37 compactgear shimano chainring a shimano compatible compact chainring bbb bcr 37 compactgear shimano chainring 5 arm road chainrings cnc machined 7075 t6 aluminum compatible with shimano tiagra 45504650 105 56505750 ultegra 66506750 and dura ace 7950 bcd 110 mm sizes 46t 50t 52t
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