What are SRAM MRX Comp flat bar shifters?

The SRAM MRX Comp 5-Speed Rear Shifter is a thumb-actuated trigger shifter for flat bar bikes running 5-speed drivetrains. Built for reliability and ease of use on entry-level and recreational bikes, it delivers positive, indexed shifting with a familiar trigger-style action. Compatible with SRAM and Shimano 5-speed rear derailleurs and cassettes.

The MRX Comp lineup is the go-to choice for commuters, recreational bikes, kids' bikes, and any flat bar build where straightforward, dependable shifting at an accessible price is the priority.