Description
SRAM Eagle S100 Derailleur
The SRAM Eagle S100 Derailleur (RD‑S100‑B1) is a modern 12‑speed rear derailleur built on ten years of Eagle drivetrain experience. It delivers a 500% gear range with precise shifting and high‑torque durability for demanding MTB and gravel riding.
A modern Eagle derailleur
The Eagle S100 uses an updated bushing fitment process for long‑term durability and smooth shifting. It works with Eagle PG1210 cassettes and offers a 500% gear range for steep climbs and fast descents. Because of this range, it suits aggressive trail, enduro, and all‑mountain riding.
SRAM Eagle S100 performance
This derailleur runs X‑Actuation for crisp, accurate shifts with Eagle shifters. A long‑cage steel cage and steel‑bearing pulleys handle high torque and rough terrain. The Drag Spring cage damper also improves chain retention and keeps the chain on under impacts or rough drops.
Why this derailleur stands out
The Eagle S100 is Half Mount‑ready, so you can pair it with a UDH and Half Mount plate for extra derailleur‑hanger security. It is built for 1x drivetrains and supports a maximum 50‑tooth rear cog, giving riders a wide, usable range. As a result, this derailleur offers a strong mix of range, reliability, and modern Mounting flexibility.
