Sram S100 Eagle 12-Speed Rear Derailleur

The Sram S100 Eagle 12-speed rear derailleur has a long cage and works with cassettes up to 50 teeth. It is designed for anyone building or upgrading a Eagle drivetrain who wants a rear derailleur compatible with a wide range of groupsets.

• Long cage: accepts Eagle 11-50t or 10-50t cassettes, sold separately
• 40-tooth capacity: keeps the chain tensioned even across widely differing gear ratios
• Backwards compatible with Eagle SX, NX, GX, X01 and XX1 EcoSystem
• SRAM X-Actuation 12-speed shifting
• Not compatible with Eagle 70, Eagle 90 or Eagle Transmission: check your groupset

Technical specifications

• Model / manufacturer code: S100 Eagle, MPN 00.7518.205.000
• Speed: 12
• Cage: Long
• Tooth capacity: 40 teeth
• Compatible cassettes: 11-50t or 10-50t Eagle (sold separately)
• Compatible systems: Eagle SX, NX, GX, X01, XX1 EcoSystem
• Not compatible with: Eagle 70, Eagle 90, Eagle Transmission
• Shifting: SRAM X-Actuation
• Mounting: Hanger-mounted, 10x1 standard, Half Mount bolt
• Cage material: Stainless steel outer cage

Founded in Chicago in 1987 by Stan Day and a group of cycling enthusiasts, SRAM is still based in the US city today. It makes drivetrains and brakes for road, gravel and mountain bikes. Its story began with a single product: Grip Shift, the shifter that lets riders change gear by twisting the grip.