How does the new XTR Di2 wireless mountain bike group measure up? We've got actual weights and pricing info inside.

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 ...

X-Sync chainrings are available in sizes from 38t up to 54t. The rear derailleur can handle both an 11-36t road cassette and a 10-42t MTB cassette, granted you fit an XD driver body and long cage.

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 ...

The Model 25 GT pairs an SRAM Eagle 11–50T cassette with a 38T e-mountain chainring. The Avinox motor has five assistance modes, all of which are tuneable via the Avinox app. Riders can choose ...