Sram 12 Speed GX Eagle Lunar Rear Derailleur

SRAM GX Eagle Lunar 12 Speed Rear Derailleur is a high-performance mountain bike derailleur engineered to deliver precise, reliable shifting across the entire Eagle drivetrain range. Designed for riders who demand dependable gear changes under heavy climbing loads, technical descents, and aggressive trail conditions, the GX Eagle derailleur combines advanced chain management with proven SRAM Eagle technology.

Featuring an updated cage architecture, the GX Eagle Lunar Rear Derailleur offers improved chain control and drivetrain stability, helping reduce chain movement on rough terrain while maintaining smooth and accurate shifting performance. Optimized to work with SRAM's latest 10-52T Eagle cassettes, it also remains fully compatible with previous 10-50T cassette options, giving riders greater flexibility when configuring their drivetrain.

Finished in the distinctive Lunar colorway, this derailleur is built to handle trail riding, enduro racing, all-mountain adventures, and demanding mountain bike applications. Its robust construction and refined design ensure consistent performance, durability, and confidence on every ride.

Whether you're upgrading an existing Eagle drivetrain or building a new mountain bike, the SRAM GX Eagle Lunar Rear Derailleur delivers the precision and reliability expected from SRAM's renowned Eagle platform.

Key Features

• Speed Compatibility: 12-Speed

• Drivetrain Platform: SRAM Eagle™

• Color: Lunar

• Technology: Advanced Eagle Chain Management

• Cassette Compatibility: 10-52T and 10-50T Eagle Cassettes

• Cage Design: Updated Architecture for Improved Chain Control

• Performance: Precise and Consistent Shifting

• Application: Trail, Enduro, XC, and All-Mountain Riding

• Construction: Durable MTB-Specific Design

• Purpose: Rear Drivetrain Gear Management

Product Specifications

• Brand: SRAM

• Model: GX Eagle Lunar Rear Derailleur

• Speed Compatibility: 12-Speed

• Drivetrain Compatibility: SRAM Eagle™

• Cassette Compatibility: 10-50T and 10-52T Eagle Cassettes

• Color Finish: Lunar

• Derailleur Type: Rear Derailleur

• Application: Mountain Bike Drivetrains

• Technology Platform: Eagle™

• Performance Focus: Chain Management and Shifting Precision

Eagle Chain Management

• Updated Cage Architecture: Improves chain retention and drivetrain stability on rough terrain

• Enhanced Chain Control: Helps reduce chain movement during aggressive riding

• Reliable Performance Under Load: Maintains shifting accuracy during steep climbs and hard efforts

• Optimized Eagle Compatibility: Designed to maximize Eagle drivetrain performance

• Smooth Operation: Delivers consistent and dependable gear transitions across the cassette range

Easy Operation / Usage

• Install the derailleur onto a compatible derailleur hanger

• Pair with a SRAM Eagle 12-speed shifter and cassette

• Route and tension the shift cable according to SRAM specifications

• Adjust indexing and limit screws for precise shifting

• Perform regular maintenance for optimal drivetrain performance

Why Choose This Product

• Full Eagle Compatibility: Works seamlessly with SRAM Eagle 12-speed drivetrains

• Supports 10-52T and 10-50T Cassettes: Offers excellent gearing flexibility

• Improved Chain Management: Updated cage design enhances drivetrain stability

• Precise Shifting Performance: Delivers reliable gear changes in demanding conditions

• Trail-Ready Durability: Built to withstand aggressive mountain bike riding

• Trusted SRAM Engineering: Proven performance for trail, enduro, and XC riders

In the Box

• SRAM GX Eagle Lunar 12 Speed Rear Derailleur