necessitating dedicated rings for each spindle option Claimed weights for GXP chainrings: 61g (26t), 66g (28t), 68g (30t), 71g (32t), 76g (34t), 91g (36t), 101g (38t), 119 (40t) Claimed weights ...

Three base sweep options are available: low, mid, and high. A 38T chainring and a 62T chainring have vastly different diameters and require different base sweeps to position the head of the chainguide ...