Parts

- Octalink bolts include steel washers, JIS includes black plastic caps - HT2 mount bolts (low torque plastic, except XTR-M970 aluminum) are for mounting non-drive arm - Hollow bolts (SH-21504) not recommended for non-treated spindles

Shimano Deore M590 trigger style shifters provide excellent functionality for 3x9 drivetrains. - Optical gear display - 2-Way release feature - Derailleur cables included

The Shimano Tourney SL-TX30 is a thumb shifter for mountain bikes that features Shimano's Optical Gear Display, which tells riders what gear position is selected while riding. - Thumb shifters - Optical gear display - Includes SIS40 shift cable set

Shimano chainrings offer durability and confidence-inspiring performance, and go a long way towards getting a drivetrain back to optimum working condition.