The Best Rear Bike Derailleurs

Looking for the best Rear Bike Derailleurs?

Discover now our comparison of the best Rear Bike Derailleurs. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Rear Bike Derailleurs are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Rear Bike Derailleurs in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

No. 1

Inkesky RD-TZ31-GS 6/7 Speed Rear Derailleur with Direct Mount, Medium Cage, for Mountain Bike

[IMPORTANT] It's Direct Mount Rear Derailleur for Mountain Bike, not Hanger mount

SaleNo. 2

Shimano Tourney RD-TY300-SGS 6/7-Speed Mountain Bicycle Rear Derailleur , Black, One Size

Shimano TX35 6 / 7-speed rear derailleur (bracket attachment)
SIS rear index shifting
SGS cage can handle wide range gearing and 34 tooth sprockets
13 tooth pulleys offer long service life and less noise

SaleNo. 3

RD-TY21B 6/7 Speed Direct Mount Derailleur for Mountain Tricycle Commuter Cruiser Bike

MODEL: RD-TY21B; Bike rear derailleur is compatible with 6/7 speed most kinds of bikes.
PERFORMANCE: Durable aluminum alloy material and excellent shifting performance ensure safe and stable riding.
WIDE APPLICATION: This bicycle transmission is Suitable for MTB, mountain bikes, commuter bike, cruiser bike, folding bike etc.
NOTE: The bike rear derailleur is direct mount, not hanger mount .Please check the mount type of the original part before purchasing. If you have any questions, please feel free to contact us, we will provide you with professional services.

SaleNo. 4

Relwears Tourney Rear Derailleur RD-TY300 6/7Speed Rear Derailleur Direct Mount for Mountain Bike Road Bike Snowmobile Trail Bike

【Model】RD-TY300-SGS; Bike 6/7 Speed Rear Derailleur for most kinds of bikes like mountain bike, hybrid bike, kids bike, cruiser bike etc.
【Features】Smooth shifting, 6/7 speed derailleur is easy and fast to install. Bracket fit (under wheel nut) Long cage tourney derailleur, total capacity 43T, pulley/Teeth 13/13T. Low sprocket: Max. 34T; Low sprocket: Min. 28T; Top sprocket: Max. 14T; Top sprocket: Min. 11T.
【Type】Long cage tourney derailleur, RD-TY300-SGS 6/7 speed derailleur is compatible with 11T /14T high speed gear.
【 Stability】Made of high quality durable aluminum alloy material and come with excellent shifting performance ensure your safe and stable while riding.
【Application】RD-TY300-SGS is compatible with 6 and 7-speed SIS INDEX variable speed transmission systems. Suitable for MTB, mountain bikes, road bikes, folding bicycles, commuter bikes, tricycles, eletric bikes etc.

SaleNo. 5

Relwears Altus RD-M310 Rear Derailleur 7/8 Speed Bike Rear Derailleur Direct Mount for Mountain Bike Road Bike Most Models

【Engineered for Multi-Speed Bikes】 The RD-M310 7/8 speed bike rear derailleur, featuring high-performance RD-CT95 Altus technology, compatible with 7/8 speeds, delivers a smooth riding experience, perfect for your biking adventures. Offers superior performance and reliability, suitable for everyday and light mountain biking
【Lightweight Design】 Designed to be lightweight, reducing bike weight, enhancing speed and maneuverability, ideal for leisure cyclists and urban riders who demand reliable performance. Suitable for those with certain performance requirements for their bikes
【Strong Adaptability】RD-M310 7/8 speed derailleur with a maximum rear sprocket of 34T and total capacity of 43T, it adapts to various riding needs, ensuring easy handling on different terrains
【Versatile Application】 Fits various bike types including mountain, road, racing, city, and folding bikes, adding versatility to your cycling experience
【Easy Installation】 Direct installation onto the bike's rear, avoiding the hassle of rack mounting. Make sure to choose the correct installation method before purchase 7/8 speed derailleur

SaleNo. 6

ZUKKA Bike Rear Derailleur RD-TY21B 6/7 Speed Hub Bolt Mount (Hanger Mount) for MTB Mountain Road Bike Folding Bikes

MODEL: RD-TY21B bike rear derailleur, Compatible with 6 and 7-speed SIS Index Shifting drivetrains.
IMPORTANT: The bike rear derailleur is hanger mount (hub bolt mount), not direct mount.
EXCELLENT PERFORMANCE: Accurate gears provide light and stable shift performance, and making riding easy and comfortable.
MATERIAL: Made of high-quality steel materials, durable and long service life. Easy to install and disassemble.
APPLICATION: Suitable for MTB mountain bike, road bikes, variable speed bicycle, folding and city bikes. It is your indispensable bicycle accessories during your cycling journey.

SaleNo. 7

Relwears Bike Rear Derailleur RD-M3020-SGS 8 Speed Derailleur Direct Mount for Mountain Bike

Premium-grade Professional Rear Derailleur: The RD-M3020-SGS 8 Speed rear derailleur is meticulously crafted with high-quality materials, ensuring reliable stability for a long-lasting and stable riding experience
SGS Long Cage Design: Engineered with precision, the SGS long cage design provides enhanced stability in chain tension, significantly reducing the risk of chain skipping. Equipped with a dual servo mechanism, it ensures faster and smoother shifting, enhancing the overall riding experience
Versatile Compatibility Across Multiple Bike Models: RD-M3020 8 speed derailleur is compatible with 7/8-speed systems, it suits various types of bicycles including mountain bikes, road bikes, and folding bikes, catering to diverse riding scenarios
Tailored for Cycling Enthusiasts: Designed for leisure riders who demand exceptional bike performance and technical mountain biking enthusiasts, offering them a dependable rear derailleur solution
Easy Installation for Instant Riding Enjoyment: Featuring straightforward direct installation, it simplifies the process and eliminates unnecessary steps. Prior to purchase, ensure correct installation to elevate your bike's performance effortlessly

No. 8

Shimano Tourney TY500 6/7-Speed Rear Derailleur

Shimano Tourney Rear derailleur compatible with all Shimano 6 and 7 speed shifters. Advanced light action design
SGS cage can handle wide range gearing. Direct fit (screws into hole in frame).
SIS Rear index shifting. 13 tooth pulleys offer long service life and less noise.

No. 9

BIYDOO Bicycle Rear Derailleur Tourney RD-TZ31 6/7 Speed Direct Mount for MTB Bike

Model: RD-TZ31-A-GS,bike rear derailleur. Compatible with 6/7 Speed SIS index Shifting drivetrains.
Direct Mount: The bike rear derailleur is direct mount, not hub bolt mount.Before purchase, please confirm whether the rear derailleur on your bicycle is a direct mount or a hanger mount.
Stable Performance: Forged from high-quality and durable aluminum alloy material, adjustment is more precise, ensuring stable gear shifts for a safer cycling experience.
Wide Application: Suitable for variable speed bikes, mountain bikes, road bikes, folding bikes, city bikes, tricycles, and more.
Note: Your satisfaction is of utmost importance to us. We are committed to providing high-quality customer service. If you have any questions, feel free to contact us anytime, and we will provide you with a satisfactory response.

No. 10

Huazu Altus Rear Derailleur for RD-M310 7/8 Speed for Mountain Bike Direct Mount

MODEL: RD-M310 Altus Rear Derailleur for Compatible with 7/8 Speed / D-ATT Black.
EXCELLENT PERFORMANCE: Wide link design ensures durability and precise shifting. Large guide wheel design reduces noise and wear.
PARM: Max Rear Sprocket: 34T, Total Capacity: 43T, Derailleur Action: Top Normal (Traditional), Cage Length: Long.
DIRCT MOUNT: Altus rear derailleurs for are direct mount, suitable for mountain bikes, road bikes, folding bikes and so on.
FEATURES: Advanced light-action design Teflon-coated bushings Direct-attach rear derailleurs.

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Last update on 2025-07-04 / Affiliate links / Images from Amazon Product Advertising API

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