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5 Best Bike Derailleurs

Updated
By
An expert product reviewer with over a decade of experience reviewing the latest appliances and technology.
Updated

Main Features

  • Shadow RD+ technology
  • Wide range compatibility
  • Direct mount derailleur
  • Smooth and precise shifting

Product Overview

The Shimano XT M8100 Rear Derailleur is a standout component in the world of mountain biking. Known for its exceptional build quality and reliable performance, this derailleur ensures smooth and precise shifting even under the most demanding conditions.

Its Shadow RD+ technology reduces chain slap and improves chain retention, making it suitable for aggressive riding styles. The wide range compatibility allows it to work seamlessly with various cassette sizes, giving riders the flexibility to tackle different terrains with confidence.

PROS
  • Reliable performance
  • Smooth shifting
  • Durable construction
CONS
  • Higher price point

Product Specifications

  • Weight 284 grams
  • Material Aluminum
  • Speed 12-speed

Main Features

  • Wireless electronic shifting
  • Lightweight construction
  • Customizable via AXS app
  • Robust and durable design

Product Overview

The SRAM GX Eagle AXS Derailleur represents the latest in electronic shifting technology. This wireless derailleur eliminates the need for cables, providing a clean and streamlined look. With its robust construction and high precision, it delivers reliable performance even in challenging conditions.

The AXS system allows for easy customization and integration with other AXS components. Its lightweight design ensures that you won't be weighed down, making it a favorite among cross-country and trail riders.

PROS
  • No cables required
  • Easy to customize
  • Lightweight
CONS
  • Requires battery management

Product Specifications

  • Weight 465 grams
  • Material Aluminum and steel
  • Speed 12-speed

Main Features

  • Shadow RD technology
  • Wide link design
  • Smooth cage movement
  • Budget-friendly

Product Overview

The Shimano Deore M6000 Rear Derailleur provides a dependable and cost-effective solution for mountain bikers. This derailleur features Shadow RD technology, which helps reduce chain slap and provides stable shifting performance.

Its wide link design ensures durability and longevity, while the smooth cage movement enhances shifting accuracy. Ideal for both novice and experienced riders, the Deore M6000 delivers consistent performance without breaking the bank.

PROS
  • Affordable
  • Reliable performance
  • Durable
CONS
  • Heavier than higher-end models

Product Specifications

  • Weight 322 grams
  • Material Aluminum
  • Speed 10-speed

Main Features

  • Ultra-Shift technology
  • Carbon fiber construction
  • Lightweight and stiff
  • Race-ready performance

Product Overview

The Campagnolo Super Record Rear Derailleur is designed for serious road cyclists who demand the highest level of performance. This derailleur features an advanced carbon fiber construction, making it incredibly lightweight and stiff.

Its Ultra-Shift technology ensures rapid and precise gear changes, allowing riders to maintain their cadence and speed during races. The Super Record's sleek design and top-tier materials make it a premium choice for those looking to gain a competitive edge.

PROS
  • Extremely lightweight
  • Precise shifting
  • High-quality materials
CONS
  • Very expensive

Product Specifications

  • Weight 181 grams
  • Material Carbon fiber
  • Speed 12-speed

Main Features

  • X-HORIZON design
  • 14-tooth X-SYNC pulley
  • Robust construction
  • Reliable shifting

Product Overview

The SRAM NX Eagle Rear Derailleur is built to withstand the rigors of all-mountain riding. With its robust construction and precise engineering, it delivers consistent and reliable shifting performance.

The X-HORIZON design reduces shift force and eliminates ghost shifting, providing a smoother ride. The large 14-tooth X-SYNC lower pulley allows for better chain management and increased durability. Whether you're tackling steep climbs or technical descents, the NX Eagle derailleur ensures you can shift confidently and efficiently.

PROS
  • Durable
  • Consistent performance
  • Good chain management
CONS
  • Heavier than some models

Product Specifications

  • Weight 339 grams
  • Material Aluminum and steel
  • Speed 12-speed