Barrel Adjuster Kit for Jab

You might want to switch your Jab derailleur from a mountain bike to gravel bike or vice versa. Gravel bikes have drop shifters, which require a barrel adjuster on the derailleur, whereas mountain bike shifters do not (because the barrel adjuster is on the shifter itself).

Pulley and Barrel Adjuster Kit for Drop Shifters

• Pulley
• M4 fastener and washer
• Bracket with barrel adjuster and lock nut

Pulley and Bracket Kit for MTB Shifters

• Pulley
• M4 fastener and washer
• Bracket with no barrel adjuster