SRAM X01 2.1 Rear Derailleur

We’ve read the reviews across the web for the SRAM X01 2.1 Rear Derailleur and summarize the results below:

Universal Ranking

PeakScore: N/A (out of 100)
User Rating: 4.4 stars 
Expert Rating: N/A stars

Number of Ratings Reviewed: 38

Pros & Cons

Reasons to buy:

User Reviews

  • Does not weigh as much as the GX, which could be easier to handle.
  • Good value for the high-quality product you get.
  • The shifts are solid and reliable for long-term use.
  • Easy and fast to set up for quick efficiency.
  • Works very well with a XX1 shifter for compatibility and functionality.
  • Very durable for sturdy and reliable use over a long time period.
  • The shifts are instant and smooth for extreme functionality.
  • You can lock the cage for added functionality when you need to do maintenance and wheel removal.
  • The ratio provides ample performance capabilities for downhill runs and uphill climbs.
  • The design is stylish and sleek for an attractive look.

Reasons NOT to buy:

User Reviews

  • Some users might think it is not worth upgrading to the X01 derailleur if you already have a GX, because the upgrades are not worth it.
  • Expensive compared to other options on the market.


The SRAM X01 2.1 Rear Derailleur is a durable, reliable, and high-quality option that is well-suited for those who want a sturdy derailleur for long-term use. Even though this is expensive, cyclists will love this easy-to-set-up choice that works well for both downhill runs and uphill climbs.