- Rear shifter is specific to SRAM Exact Actuation ratio 10-speed Mountain and Road rear derailleurs - Front shifters are specific to 2x (10sp-mtn/road) or 3x (9/10sp-mtn) front derailleurs and drivetrains - Stand-alone design to allow use with various brake options - For 3x10sp left side (3x) shifter replacement use BTI# GS-2897