Bike Derailleurs

Explore bike derailleurs and shifting components at Wheels. The collection features Shimano options from product lines such as Tourney, Altus, Acera, Alivio, De…

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FAQ

How do I choose the right derailleur for my bike?
Check your bike’s number of speeds, drivetrain configuration, and existing derailleur model. You should also confirm compatibility with your shifter, cassette, and mounting system before purchasing.
What is the difference between a front derailleur and a rear derailleur?
A front derailleur moves the chain between the front chainrings on bikes equipped with this system. A rear derailleur moves the chain between the rear cassette sprockets. Which components your bike needs depends on its drivetrain design.
Are Shimano derailleurs compatible with every bike?
No. Compatibility depends on the drivetrain speed configuration, shifting system, mounting interface, and other drivetrain components. Always check the specifications of the exact model before ordering.
What is the difference between Shimano Tourney, Altus, Acera, Alivio, Deore, and SLX?
These are different product lines within Shimano’s component range. Models vary in design, intended use, and component compatibility. The product line name alone is not enough to determine whether a derailleur will fit your bike.
What is a derailleur hanger, and when should I replace it?
A derailleur hanger connects the rear derailleur to the frame on bikes that use a separate hanger. A bent or damaged hanger can affect shifting accuracy. Replacement hangers are frame-specific, so verify the exact frame compatibility before purchasing.

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