The 10 Best Rear Derailleurs

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This wiki has been updated 23 times since it was first published in November of 2018. Rear derailleurs are just one component of a bike's groupset, but they make a huge difference in how smoothly and easily your two-wheel ride changes gears, especially when doing so while accelerating or under load. A perfectly engineered model responds immediately as soon as you press on your shifter and can last though years of use without requiring constant tweaking. When users buy our independently chosen editorial recommendations, we may earn commissions to help fund the Wiki.

1. Sram XX1 Eagle

2. Shimano Acera

3. Campagnolo Record 11

Editor's Notes

December 09, 2020:

In the latest update, we upgraded the SRAM X01 to the SRAM XX1 Eagle. The XX1 Eagle is the company's most recent model, featuring a redesigned geometry that cuts down on chain slap and improves chain management. It supports an 11-speed 1x drivetrain, something many mountain bikers are switching to as it's less complicated, more reliable, and better suited for trail riding.

The Campagnolo Veloce was changed to the Campagnolo Centaur, which has many of the same features the company's premium models have. This includes rounded teeth on the lower pulley wheel and long teeth on the upper cog, both of which result in smoother shifting and less noise.

November 26, 2018:

While they may all look relatively similar to the novice, the engineering and construction quality of rear derailleurs can actually make a huge difference in how well your bike shifts between gears. We did our best to include models that function well in a variety of price ranges, as well as units designed for trail and road riding.

4. Shimano Deore XT RD-M786 SGS Shadow

5. Sram X4

6. Campagnolo Centaur

7. Shimano Deore XT RD-M772

8. Sram Force 22

9. Shimano RD-M591

10. Sram GX

Brett Dvoretz
Last updated by Brett Dvoretz

A wandering writer who spends as much time on the road as in front of a laptop screen, Brett can either be found hacking away furiously at the keyboard or, perhaps, enjoying a whiskey and coke on some exotic beach, sometimes both simultaneously, usually with a four-legged companion by his side. He has been a professional chef, a dog trainer, and a travel correspondent for a well-known Southeast Asian guidebook. He also holds a business degree and has spent more time than he cares to admit in boring office jobs. He has an odd obsession for playing with the latest gadgets and working on motorcycles and old Jeeps. His expertise, honed over years of experience, is in the areas of computers, electronics, travel gear, pet products, and kitchen, office and automotive equipment.

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