The SRAM X.4 8-Speed Rear Trigger Shifter is a durable, entry-level handlebar mountain bike component designed for the right-hand side of flat bars. It serves as a step up from the X.3 model, transitioning to a more premium aluminum chassis design.

Key Technical Specifications

• Placement: Right-hand side (rear derailleur control).
• Speed Capacity: 8-Speed.
• Shifter Type: Trigger (Dual-lever push design).
• Actuation Ratio: SRAM 1:1 Actuation Ratio.
• Derailleur Compatibility: Exclusively compatible with SRAM 1:1 rear derailleurs. It will not work with Shimano 8-speed rear derailleurs.
• Model ID / Part Number: SL-X4-A1 / 00.7015.093.010.

Core Features

• Material Upgrade: Constructed with an aluminum master body housing paired with composite dual-thumb shift levers, offering better impact resistance than the all-plastic X.3.
• 1:1 Actuation Technology: Pulls an equal length of cable for every millimeter of derailleur movement. This design reduces ghost-shifting caused by mud build-up, cable contamination, or housing flex.
• 2-Lever Ergonomics: Employs SRAM's signature thumb-indexed double-lever push configuration. Your index finger stays completely free to grip the handlebar or cover the brake lever.
• Maintenance & Indicators: Features the StraightShot cable system for tool-free, rapid inner wire replacements. It also includes a high-visibility mechanical gear indicator window situated right in front of the handlebar clamp.
• Cable Included: Comes packaged from the factory with a pre-installed 2200mm friction-reducing inner shifter cable.