What is the SRAM X.4 8-Speed Trigger Shifter Set?

The SRAM X.4 8-Speed Trigger Shifter Set is a matched pair of thumb-actuated trigger shifters for flat bar mountain bikes running 8-speed drivetrains. It includes both front and rear shifters for a complete flat bar shifting setup. The rear unit provides positive indexed 8-speed shifting compatible with SRAM and Shimano 8-speed systems, and the front unit handles front derailleur actuation for 2x or 3x setups.

The X.4 sits one tier above the MRX Comp in SRAM's flat bar lineup, offering a more refined shifting feel for trail and recreational mountain bikes. A complete set for any flat bar 8-speed build.