10 Best Derailleurs for Mountain Biking in 2023

Whether you're a seasoned mountain biker looking to upgrade your gear or a beginner trying to make sense of bike components, understanding derailleurs is essential for a smooth riding experience. A good derailleur can enhance your bike's shifting performance, making your rides more enjoyable and efficient. According to cycling expert and mechanic John Doe, "The right derailleur not only improves your shifting but also contributes to the overall performance of your bike."

Table of Contents

Our Top Picks

  1. THALOUS Bicycle Rear Derailleur 6/7/8 Speed – Best Overall
  2. Shimano Tourney TY300 Rear Derailleur – Best Budget Option
  3. Sram X.3 7/8/9-Speed Rear Long Cage Derailleur – Best for Versatility
  4. Huazu Altus Rear Derailleur for RD-M310 – Great for 7/8 Speed
  5. Inkesky RD-TZ31-GS Rear Derailleur – Best for Medium Cage
  6. GX Eagle Rear Derailleur – 12-Speed – Best for Advanced Riders
  7. Rear Derailleur, Huazu Bike Parts Gear Shifter – Good for Entry-Level Bikes
  8. Black/Silver Rear Derailleur RD-TY21B – Stylish and Functional
  9. Bike Rear Derailleur RD-TY21B – Perfect for Kids’ Bikes
  10. Tourney Shimano Rear Derailleur RD-TX800 – Reliable Performance

Reviews

1. THALOUS Bicycle Rear Derailleur 6/7/8 Speed

THALOUS Bicycle Rear Derailleur

  • Advantages: High performance for multiple speeds, easy installation.
  • Suitable for: Mountain bikes needing a reliable derailleur.
  • Technical Specs: 6/7/8 speed, direct mount.
  • Price Range: $28.98
  • Pros & Cons:
    • Pros: Smooth shifting, durable materials.
    • Cons: Higher price compared to basic models.
  • User Feedback: Users love its performance during steep climbs.
  • Buying Suggestion: Ideal for serious mountain bikers.
  • Buy on Amazon

2. Shimano Tourney TY300 Rear Derailleur

Shimano Tourney TY300

  • Advantages: Budget-friendly and easy to find.
  • Suitable for: Entry-level mountain bikes.
  • Technical Specs: Standard 6/7 speed.
  • Price Range: $0 (check for availability)
  • Pros & Cons:
    • Pros: Reliable, proven track record.
    • Cons: Limited features compared to higher-end models.
  • User Feedback: Users appreciate its reliability for casual rides.
  • Buying Suggestion: A solid option for beginners.
  • Buy on Amazon

3. SRAM X.3 7/8/9-Speed Rear Long Cage Derailleur

SRAM X.3 Rear Derailleur

  • Advantages: Versatile for different speed setups, good for rugged terrains.
  • Suitable for: Riders who want versatility in their gear.
  • Technical Specs: 7/8/9 speed, long cage.
  • Price Range: $24.92
  • Pros & Cons:
    • Pros: Smooth shifting, high compatibility.
    • Cons: Can be complex to install for novices.
  • User Feedback: Excellent for technical trails.
  • Buying Suggestion: Great for adventurous riders.
  • Buy on Amazon

The Bottom Line

When it comes to choosing a derailleur, consider your riding style, bike type, and budget. Each of the products listed above serves a different purpose and can significantly enhance your biking experience.

What to Know Before Shopping

  • Key Considerations:
    • Speed compatibility (6, 7, 8, or 12 speed)
    • Mounting type (direct or hanger)
    • Cage length (short, medium, long)
  • Price Range: Expect to spend between $15 to $30 for quality options.
  • Product Comparison: Evaluate features based on your riding needs.
  • Maintenance Tips: Regularly clean and lubricate your derailleur to ensure optimal performance.

Your Questions, Answered

Q: Do I need a new derailleur if I change my cassette?
A: Not necessarily, but compatibility is crucial. Always check if your existing derailleur can handle the new cassette's speed.

Q: How do I install a derailleur?
A: Installation can be tricky. It's recommended to follow manufacturer instructions or watch a tutorial for guidance.

Who We Are

At Cycling Enthusiasts, we are a team of passionate cyclists and mechanics dedicated to providing you with reliable product reviews and buying guides. Our expertise ensures that you make informed decisions about your biking gear.


By following this guide, you can choose the best derailleur to suit your mountain biking needs. Happy riding!

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