Shimano Dura-Ace Di2 RD-R9250 Pulley Set - 12-Speed Shift Cables this is the tube that

this is the tube that solves it

consistent modulation is what you are after

Use it after wet rides to displace trapped water from bolts and housings

the Range Twist is a cleverly designed solution

and classic or retro-inspired builds

Shimano Dura-Ace Di2 RD-R9250 Pulley Set - 12-Speed Shift Cables this is the tube thatWhat does the Dura Ace Di2 RD R9250 pulley set bring back to your drivetrain? If your Dura Ace Di2 12 speed rear derailleur has racked up serious miles, this pulley set is the simplest way to restore that brand new, friction free feel. The kit includes both the guide pulley and the tension pulley designed specifically for the RD R9250, each running on precision sealed bearings with dust covers that keep contamination out and pedaling efficiency up.