The SRAM MRX Comp 6-Speed Gripshift Shifter Pair is a highly reliable twist-shift system designed as a direct replacement or upgrade for kids' bikes, entry-level mountain bikes, and casual hybrid commuters. Unlike SRAM's high-end mountain bike drivetrains that use proprietary pull ratios, the MRX line is explicitly engineered with a Shimano 2:1 actuation ratio. This allows the shifters to work seamlessly with standard Shimano rear derailleurs and cassettes.
Core Technical Specifications:
Configuration: 3x6 Speed Pair (3-Speed micro-adjust left shifter for the front derailleur, 6-Speed indexed right shifter for the rear derailleur).
Shift Style: Twist grip with tactile indexing clicks.
Construction: Grilon® composite body with a soft dual-density rubber grip surface.
Weight: Approximately 166 grams per pair.
Cables: Includes inner die-drawn steel shift cables pre-installed (does not include outer housing).
Key Performance Features:
SRS Technology: Uses SRAM’s Speed Release Spool internal shift assist spring mechanism to lower the hand effort required to change gears, making it exceptionally easy for younger riders or those with limited hand strength.
Quick View Indicator: A high-visibility mechanical window cleanly displays your active gear number at a glance.
Front Micro-Adjust (Left Shifter): The left 3-speed shifter features multi-click micro-adjustments, allowing you to fine-tune ("trim") the position of your front derailleur while riding, completely eliminating chain rub when crossing gears.
Drivetrain Compatibility:
Compatible Rear Derailleurs: Shimano 6-speed rear derailleurs (such as Shimano Tourney TY300 or older Altus/Acera).
Compatible Front Derailleurs: Both Shimano and SRAM front triple derailleurs.
Incompatibilities: Will not work with SRAM 1:1 actuation rear derailleurs (X3, X4, X5) or newer modern Shimano 9/10/11-speed setups.
