SRAM Eagle AXS S500 Derailleur

SRAM Eagle S-Series: One Lineup to Replace Nine Drivetrains

SRAM just quietly dropped something big. As of today, the entire old Eagle mechanical and AXS lineup — SX, NX, GX, X01, XX1, and all four AXS variants — is officially dead. In their place: three new groupsets called the Eagle S-Series. S100, S200, and S500. That’s it. This is a massive SKU consolidation, and honestly, it’s probably the right call. What Is the Eagle S-Series? The S-Series is SRAM’s new simplified MTB drivetrain lineup for bikes running a traditional threaded derailleur hanger — not UDH. If you want UDH compatibility, you’re still shopping in the Transmission range. The S-Series is explicitly for legacy hangers, older frames, and OEM builds where UDH isn’t in play. ...

April 20, 2026 · 4 min