Shimano 105 fc5603 triple chainringsreplacement 10spd alloy chainrings for use with the shimano 105 fc5603 triple chainset featuresbcd 130mm 50t 39t 74mm 30ta 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products buy shimano components from chain reaction cycles the worlds largest online bike store