The Box One 9 speed chain is BOX's best performing chain in a 9-speed package

Medium - 19 - 21

Compatible with 11-speed Shimano and Dura-ace drivetrains

composite matrix handle and end caps

Two piece set

CushCore Trail Inner Tyre Suspension System - 27.5 Inch/29 Inch Mullet - Pair Do Not Ship Internationally The Box One 9 speedCushCore TRAIL provides an all new option for riders looking for a performance weight balance between the PRO and XC inserts. Additionally, CushCore TRAIL was engineered to provide more progressive sidewall support: the harder you push, the more support youll feel, enabling supple tyre response on flat corners and a stable sidewall when railing berms. Like all CushCore tyre inserts, TRAIL absorbs shock and vibration, improves cornering, and prevents