Your question: What is the best derailleur for mountain bikes?

Which bike derailleur is best?

Comparison Table Best MTB Derailleur

Name Supports Single Front Rating
Shimano XTR Di2 RD-M9050 Yes 4.6
SRAM XX1 Eagle Yes 5.0
Shimano M640 Zee Yes 4.4
Shimano Deore XT RD-M786 SGS Yes 4.9

What is a good MTB rear derailleur?

Best mountain bike derailleurs

  • Shimano Zee Freeride. A modern clutch rear derailleur for those who need Shimano 10-speed compatibility in a compact package. …
  • MicroSHIFT XCD. …
  • Shimano Deore XT Long Cage. …
  • Sunrace MZ900. …
  • SRAM GX Eagle. …
  • SRAM XX1 Eagle AXS. …
  • TRP TR12.

How do I choose a derailleur?

When buying a new rear derailleur be sure to match it with your drivetrain ‘speed‘. 10-speed drivetrains use narrower chains than 9-speed so you’ll need a mech to match. Most rear mechs are made of a polymer and alloy mix but you’ll find carbon fibre in top-end models to shave even more weight.

Will any derailleur fit my bike?

A derailleur for your mountain bike should match the specifications on the original derailleur. That is, while it doesn’t need to be the same model of derailleur, it does need to be the same brand, in almost every case. It also needs to match the number of gears, or have more intended.

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How much does a good derailleur cost?

If you take your MTB into a local bike shop the average price to replace a rear derailleur is going to be $110. If you DIY replacing a derailleur will cost about $50 (plus your time) This price will depend a lot on the actual derailleur needed. Usually a bike shop will also take care of other problems.

Which is better SRAM or Shimano?

The main differences between SRAM vs Shimano are: SRAM has a stronger hold over the high end of the groupset market, whereas Shimano’s groupsets are often bought by entry to mid-level users. Shimano shifting actuation works on a 1:1 ratio, whereas SRAM’s shifting actuation works on a 2:1 ratio.

Is Shimano Deore better than acera?

Acera works fine. Deore is a bit better. Deore works better for longer and needs a little less attention to keep it running nice.

Is Shimano Altus good for trail?

The Shimano Altus groupset is known for being accessible and a good option for beginning and intermediate riders, perhaps from its ease of use and reasonable price point. It’s commonly used for both on-road and off-road bikes, but especially hybrids and cross country.

Is Shimano Alivio any good?

Alivio is another small step up in gear hierarchy, it’s still a 9 speed drivetrain this one offers lighter components and reportedly better shifting than Acera and Altus. Shimano reckons this little lot is for good quality recreational mountain bikes, we saw it specced recently on a new 2020 Trek Calibre costing £750.

How do I know if I need a new derailleur?

If there’s play, get a new one. Also, drip some Tri-Flow or something into all the pivots. If it’s really dirty and sticky, it’ll have a harder time with the shift you describe. If with clean, lubricated pivots the derailleur still won’t move well, you probably need a new one.

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What is the difference between short cage and medium cage derailleur?

The only difference between the two is the amount of chain slack they can take up. In theory, the fact that the short RDs have a shorter cage means that the amount of movement is less due to the lower angle and lower flex.