The SRAM X3 7/8/9-Speed Long Cage Rear Derailleur (Black) is an entry-level, highly dependable mechanical rear mechanism built under model ID RD-X3-A1. Designed for budget-friendly mountain, hybrid, and touring bike builds, this derailleur provides a straightforward replacement solution that emphasizes ease of maintenance and reliable chain management over rough paths.

Product Specifications & Features

• 1:1 Actuation Ratio: Built with SRAM's signature 1:1 Actuation Technology, the derailleur moves the exact same distance for every unit of cable pulled. This ensures forgiving setup tolerances and consistent shifting through mud, dust, or wet weather.

• Drivetrain Compatibility: Designed to work interchangeably with 7-speed, 8-speed, or 9-speed cassettes, depending entirely on the index speed of the shifter you link it with.

• Long Cage Design: The prolonged aluminum cage architecture features a high 45-tooth chain wrap capacity, allowing the bike to easily accommodate multi-chainring setups (2x or 3x front cranksets) paired with standard cassettes.

• Cog Limitations: Engineered with a maximum low-gear allowance to accept up to a 34T largest rear cog.

• Material Matrix: Built using high-impact composite and steel link plates, mixed with a durable Grilon composite knuckle and an aluminum cage body. It weighs approximately 272 grams and runs on steel pulley bearings.

This derailleur is a perfect blend of functionality and durability, tailored for riders seeking reliable performance on a budget.