GX Eagle is all about the precision and simplicity of the 1×12 drivetrain with the massive range of the 10-50 cassette. Fast, sharp shifting with the GX trigger shifter is to be expected, but SRAM basically took the full mechanicals of the Eagle XX1 GripShift Shifter, changed body material from carbon fiber to composite and added only 4 grams, saving $100. The essence of GripShift has always been easier, simpler, more responsive shifting. The original version put SRAM into the component game, and it worked quite well. SRAM’s dedication to it’s 1:1 cable pull ratio moved the engineers more towards developing the top trigger shifting system, but GripShift never truly went away. Top riders from every discipline have advocated for having a GripShifter back in top-line components. Here, in GX Eagle, the 12-speed shifting system answers the call, and while the triggers may be more popular, GripShiftErs are ecstatic. Still built with the 1:1 X-Actuation principles to fully integrate with the Eagle rear derailleur, SRAM uses a full metal indexing system called Speed Metal for ultimate precision and durability, always a challenge for original weight versions that featured plastic. A series of three rows of ball bearings, called Rolling Thunder, nearly eliminates friction and play, reducing the force needed to shift and promoting long-term performance under all weather and climate conditions. These robust internals are a huge advancement over the best twist-style shifters made.