Rear Derailleurs of 2025
Best Choice1
Clicked 5 times in the last monthSHIMANO21% OffSHIMANO Deore RD-M5120 Rear Derailleur SGS, 10/11 Speed
Main highlights- Material: aluminum
- Gearing: [long] 2 x 11, 2 x 10, 1 x 10
- Compatibility: HG-X11 11-speed, HG-X 10-speed
- Cassette Range: [2 x 11/10] 42t, [1 x 10] 46t
- Capacity: 41t
9.8Exceptional
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Value for Money2
RelwearsRelwears Bike Rear Derailleur RD-M3020-SGS 8 Speed Derailleur Direct Mount for Mountain Bike
Main highlights- 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
- 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
- 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
- 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
9.5Excellent
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3
HuazuHuazu Rear Derailleur for RD-TZ31-A, Bike Parts Gear Shifter with Direct Mount/Hanger Mount for 6/7 Speed Mountain Bicycles
Why we love it
Durable construction ensures long-lasting performance.
Compatible with various bike types and speeds.
Easy installation with direct mount design.
9.4Excellent
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4
Relwears13% OffRelwears Tourney Rear Derailleur RD-TY300 6/7Speed Rear Derailleur Direct Mount for Mountain Bike Road Bike Snowmobile Trail Bike
Main highlights- 【Type】Long cage tourney derailleur, RD-TY300-SGS 6/7 speed derailleur is compatible with 11T /14T high speed gear.
- 【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.
- 【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.
- 【 Stability】Made of high quality durable aluminum alloy material and come with excellent shifting performance ensure your safe and stable while riding.
9.3Excellent
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5
SHIMANOShimano Tourney RD-TY300-SGS 6/7-Speed Mountain Bicycle Rear Derailleur , Black, One Size
Main highlights- 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
9.2Excellent
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6
Relwears12% OffRelwears Altus RD-M310 Rear Derailleur 7/8 Speed Bike Rear Derailleur Direct Mount for Mountain Bike Road Bike Most Models
Main highlights- 【Versatile Application】 Fits various bike types including mountain, road, racing, city, and folding bikes, adding versatility to your cycling experience
- 【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
- 【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
- 【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
- 【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
9.1Excellent
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7
SHIMANOShimano Rear Derailleur, RD-TX800, 7/8 SPD, Direct Attach, Bla
Main highlights- TX models come with Smart Cage which gives MegaRange compatibility with a shorter derailleur cage
- Largest Cog: 34
- Drivetrain Speeds: 8
- Chain Wrap Capacity: 43
- Cage Length: Long
9.0Excellent
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8
SHIMANO21% OffShimano Acera RD-M3020-SGS Rear Derailleur - 7/8 Speed, Long Cage, Black
Main highlights- Versatile performance and wide compatibility
- SGS Long cage
- Drivetrain Speeds: 7,8
- Double Servo mechanism enables the rear derailleur to move in an optimum path
- Chain Wrap Capacity (teeth): 45
8.9Very Good
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9
CHMEFLYCHMEFLY Bike Rear Derailleur RD-TX800 7/8 Speed Tourney for Road Bicycle MTB Mountain Bike Direct Mount (Black)
Main highlights- Precise Adjustment: High-hardness aluminum alloy body adjustment, adjustment is more precise. It can be adjusted slightly in multiple places to ensure accurate speed change performance.
- MODEL:RD-TX800 Bike Rear Derailleur compatible with 7/8 speed SIS Index Shifting drivetrains.Suitable for MTB,mountain bikes, road bikes, folding bicycles etc.
- Long cage design, features an oversized jockey wheel,and total package capacity 43T.13T Pulley_Teeth, which reduces noise and brings excellent speed
- High-quality material:This bike rear derailleur is made of high hardness aluminum alloy, sturdy and durable, not easily deformed and not easily damaged.The hollow weight-reduction design is adopted, and the speed change is more stable.
- Easy to install and remove, convenient to use. This bike rear derailleur is direct mount, not hub bolt mount. Please check the mount type of the original part before ordering.
8.7Very Good
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10
SRAMSRAM X3 Rear Derailleur - 7,8,9 Speed, Long Cage, Black
Main highlights- Will work with 7, 8 or 9 speed cassettes, depending on the shifter used
- Largest Cog: 34
- Chain Wrap Capacity: 45
- Cage Length: Long
- 1:1 shifter-to-derailleur actuation ratio for precise light-action indexing
8.6Very Good
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