How do I switch between indexed and friction mode on the SL-BSR1?

The SL-BSR1 has a small lever or button on the shifter body that toggles between indexed and friction mode. In indexed mode the lever clicks precisely; in friction mode the lever moves continuously without clicks. Consult the Shimano SL-BSR1 manual for the exact toggle mechanism.

Is the SL-BSR1 compatible with an 11-speed drivetrain?

In friction mode yes — friction mode is speed-agnostic. In indexed mode, the SL-BSR1 is designed for 10-speed Shimano rear derailleurs. For 11-speed indexed shifting, a different bar-end shifter with 11-speed cable pull indexing is required.

Shimano

Shimano Dura-Ace Bar-End Shifter SL-BSR1

Name: Shimano Dura-Ace Bar-End Shifter SL-BSR1
Brand: Shimano
SKU: ISLBSR1H1
Price: 9190.00 INR
Availability: InStock
Author: InstaSport Editorial

₹9190.00

Description

SHIMANO DURA-ACE - Bar-End Shift Lever - Road - 2x11-speed For triathlon and time trial bikes, SHIMANO DURA-ACE SL-BSR1 bar-end shifters deliver precision shifting with a sleek aerodynamic design. Precision-engineered 11-speed index bar end shift lever Weight: 153g (Pair) SPECIFICATION MODEL NO SL-B