- X112 and X145 chainrings Designed to be perfectly Compatible with 2015 Campagnolo 11x 4 arm Chorus, Record and Super Record carbon chainsets. Matches Campagnolo's shifting ramps and pins, generally speaking, for optimal gear shifting, it is strongly advised to replace all chainrings with Specialites T.A Completely CNC machined, very light and stiff. * 112mm BCD - Al 7075 T6 - 4 hole - Inner * 145mm BCD - Al 7075 T6 - 4 hole - Outer
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