Sram Derailleur S100 Eagle 12 Speed Mechanical 50T Max

The SRAM S100 Eagle 12-speed rear derailleur is the most accessible entry point into the Eagle ecosystem, designed to deliver reliable wide-range shifting and durability for everyday mountain biking.

Built on over a decade of Eagle development, the S100 focuses on simplicity, strength, and consistent performance. It supports up to a 50T cassette, giving you a wide gear range for climbing while maintaining smooth, predictable shifts.

A key feature is SRAM’s Drag Spring cage damper, which helps keep the chain stable and reduces noise and slap on rough terrain—making it well-suited to trail riding and general use.

Key Benefits

Wide-Range 50T Compatibility: Ideal for 10–50T and 11–50T Eagle cassettes.
Proven Eagle Shifting: Uses X-Actuation™ for consistent, accurate gear changes.
Drag Spring Clutch: Improves chain retention and reduces noise.
Durable Steel Construction: Built to handle everyday riding and tough conditions.
Affordable Entry Point: Great value for 12-speed Eagle drivetrains.

Specifications

Speed: 12-speed
Max Cog Size: 50T
Technology: X-Actuation™, Drag Spring damper
Cage: Long cage
Material: Steel cage and hardware
Drivetrain: 1x only
Compatibility: SRAM Eagle 12-speed (SX, NX, GX, etc.)
Mounting: Standard hanger + optional UDH Half Mount compatibility

Who Is This Best Suited For?

Ideal for entry-level MTB riders, commuters, and casual trail riders looking for a reliable and budget-friendly 12-speed derailleur. Perfect for bikes running 50T Eagle cassettes where durability and affordability are more important than weight or high-end refinement.