Extralite ExtraBolt 15 jockey wheels replacement bearing, fit Extrabolt 15.0-15.1-15.2. It's an high quality sealed low friction bearing, 12x8x3.5 mm size. Please remember that each jockey wheel require 2 bearings.
Hopp Carbon ultralight b-screw limit plate for Sram Eagle 12s AXS, XX1, X01 rear derailleurs tuning (not compatible with 11s derailleurs). Carbon fiber molded with high pressure injection resin. Comes with black anodized aluminum insert. UD matte finish. 92 mm jockey wheels holes distance. Only 2.6 gr. (SL version) allows 2.2 gr. weight saving (about 45%). Exactly replace stock part with the same safety and usability, adds a touch of custom and racing look. Made in Germany.