Dura-Ace SL-BSR1 11-Speed Bar End Shifters

Shimano Dura - Ace SL - BSR1 11 - Speed Bar End Shifters offer top - notch performance. The right - side rear shifter has 11 - speed index - only function, while the left - side front shifter is 2 - speed. All bar - end road shifters made after Nov 2008 fit bar diameters from 19 - 22mm. It's a double - chainring setup, compatible with Shimano Road rear and front derailleurs. It can be mounted at the bar end or downtube, with 11 drivetrain speeds and is suitable for Shimano/SRAM end types.

Using these shifters is easy. To shift gears, simply operate the levers on the right - hand side for rear gear changes and the left - hand side for front gear changes. When installing, make sure to check if your handlebar diameter is between 19 - 22mm as these shifters are designed for this range. For mounting, you can choose either the bar end or downtube option according to your preference. As for maintenance, keep the shifters clean. Regularly wipe them down to remove dirt and debris. Lubricate the moving parts occasionally to ensure smooth operation. If you notice any problems with shifting, it might be a good idea to take it to a professional bike mechanic for a check - up.