The Best Rear Bike Derailleurs of 2023

*Model：RD-TY21B rear derailleur compatible with 6/7 speed mountain bikes.

*Note:The rear derailleur is direct mount,not hub bolt mount .Please check the mount type of the original part before ordering.

*Stability: Durable aluminum alloy material and excellent shifting performance ensure safe and stable riding.

*Wide application: Rear derailleur is easy to use and maintain.Suitable for MTB,mountain bikes, road bikes, folding bicycles and so on.

*Important: Please feel free to contact if you have any questions, we will provide quality service.

Tourney RD-TX800 Rear Derailleur

Smooth shifting, easy and fast to install. Bracket fit (under wheel nut) Long cage tourney derailleur, compatible with 11T /14T high speed gear

Rear derailleur, compatible with 6 and 7-speed SIS INDEX variable speed transmission systems

B tension adjustment screw, so that the distance between the upper guide wheel and the tooth tip of the largest flywheel can not be less than 6mm

Max Sprocket 34T. Min Sprocket 11T

Long cage tourney derailleur, compatible with 11T /14T high speed gear

[note] this is a direct mount rear transmission for a mountain bike, not a suspended one.

Model:RD-TZ31-A rear derailleur compatible with 6/7 speed mountain bikes.

Note:The bike rear derailleur is direct mount,not hub bolt mount.

Stability: Durable aluminum alloy material and excellent shifting performance ensure safe and stable riding.

Application: Suitable for MTB,mountain bikes, road bikes, folding bicycles and so on.

Important: Please feel free to contact if you have any questions.

Model: RD-TX800 tourney rear derailleur, compatible with 7/8 speed drive system, suitable for MTB mountain bikes, folding bicycles etc.

Stability: Long cage design, features an oversized jockey wheel. Double servo design keeps pulley close to sprockets for better shifting.

Performance: Forged with high hardness aluminum alloy.The hollow weight-reduction design is adopted, and the speed change is more stable.

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.

Easy to Install: 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.

Chain Wrap Capacity: 43teeth, Derailleur Action: Top-Normal (Traditional)

Derailleur Color: black, Drivetrain Spacing: Shimano/SRAM 8, Largest Cog: 34teeth

Shifter/Rear Derailleur : Shimano, Speeds: 8sp, Weight: 326g

MODEL:RD-TZ31-A bike rear derailleur, Compatible with 6 and 7-speed SIS Index Shifting drivetrains.

IMPORTANT : The hub bolt mount （hanger mount) rear derailleur for mountain bike, 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.

【Model】 Shimano Tourney (SIS) RD-TZ31-GS 6/7 speed，medium-cage , direct mount.No retail packaging. Items as shown

【Specifications】 Total capacity(aka chain capacity) 34T, Largest sprocket 28T , Smallest sprocket 14T, Front chainwheel tooth difference 20T.

【Compatibility】 Compatible with 6 and 7-speed SIS Index Shifting drivetrains, for mountain bike.

【Incompatibility】 1) Not compatible with hub bolt mount (bracket mount) frame 2)If the total capacity of your bike exceeds 34T, this RD-TZ31 is not compatible with your bike, please konw before buying. Please see below for a detailed description of how to calculate total capicity.

【Tools Required】 5mm allen wrench