Best Road Rear Bike Derailleurs in 2026

Capable of handling up to a 30t maximum cassette size

Extra stiff for crisp, durable shifting

Sealed bearing tension pulley

Road to 11 speed change

Crown: 34 teeth

Weight: 225 grams

Capable of handling up to a 30t maximum cassette size

Extra stiff for crisp, durable shifting

Sealed bearing tension pulley

Shimano 3500 Rear Road Mech

Colour Black

9 speed

Model: RD-TY300 rear derailleur, compatible with 6 and 7-speed SIS INDEX variable speed transmission systems compatible with 11T /14T high speed gear

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

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

MODEL:RD-TZ31-A bike rear derailleur.This is a mountain bike derailleur, which is basically suitable for mountain bike, and can adjust the speed of 6 / 7.

Easy to Install: Adopt ergonomic design, with simple design, easy to install and remove, convenient to use.

Premium Quality:Accurate gears provide light and stable shift performance,and making riding easy.

【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.

Precise chain movement changes gears smoothly

Direct Mount

Light shift effort

Shimano RD-M310 (RD-CT95) Altus Rear Derailleur 7/8 Speed / D-ATT Black

Model: RD-M310 Compatible with: 7/8 speeds Max Rear Sprocket: 34T Total Capacity:43T

Shimano Altus 7/8 Speed Black RD-M310 Mountain Bike Rear Derailleur-Direct Mount

Lighter operation

Available in SS and GS type

37T/44

Great value Altus rear derailleur offering crisp performance on- and off-road for 9-speed drivetrains

Wide link design increases rigidity and service life

11-tooth pulleys for reduced pulley wear and chain noise

MODEL: SHIMANO TOURNEY RD-TY200 bike rear derailleur, Compatible with 6 and 7-speed SIS Index Shifting drivetrains.

IMPORTANT: The Shimano direct mount rear derailleur for mountain bike, not hub bolt mount (hanger mount).

EXCELLENT PERFORMANCE: Accurate gears provide light and stable shift performance, and making riding easy and comfortable.

MODEL:RD-TY300 Rear Derailleur,Suitable for 6/7/8 speed.

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.

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

*Note:The bike rear derailleur is hub bolt mount (hanger mount),not direct mount .Please check the mount type of the original part before purchasing.

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

Model: RD-TZ31-A; Bike rear derailleur, compatible with 6/7 speed mountain bikes, commuter bike, tricycle, folding bike etc.

Note: The bike rear derailleur is direct mount, not hub bolt mount. Please choose right mount way before you purchase.

Stability: Made of high quality durable aluminum alloy material and come with excellent shifting performance ensure your safe and stable while riding.

【MODEL】Bicycle rear derailleur RD-TY21B, suitable for 6-speed and 7-speed SIS index variable speed drives. Please pay attention to the speed when buying.

【Hook mounted】Before purchasing, please confirm whether the rear derailleur of your bicycle is directly installed or hook mounted. This model is a Hook mounted method.

【High-quality material】This bicycle rear derailleur is made of high-quality steel, sturdy and durable, not easily deformed and not easily damaged.

【PACKAGE】2 x Bicycle Derailleur Hanger Replacement.

【FUNCTION】Play to protect the transmission after dialing role.

【APPLICATION】Universal type fit for most of bike in case of emergency.

Shimano RD-TZ31 6/7 Speed Rear Derailleur Direct Mount For Mountain Bike

This is Direct Mount type, NOT hub bolt mount type，Material: High quality plastic and alloy

For 6/7 grade freewheel, SIS index shift, fit for mountain bike/road bike

Application:Provide effective protection for rear derailleur, prevent the derailleur was struck distortion or displacement in riding.

Size:115 X 54 X40 mm/4.5'' X 2.1'' X 1.57''

Easy to installed:Just be fixed in the corresponding hole position;

Universal Derailleur Guard for Quick Release or Bolt on Rear Axles.

Easy to installed:Just be fixed in the corresponding hole position.

Made of strong steel,very durable,suitable for most mountain bikes, road bikes, folding bicycles, racing bikes.

MTB Road Bike Rear Derailleur Hanger extender kit with bolts, new design , fit 34-52t MTB Road bike flywheel

Hollow out design, ultralight and beautiful, only 11g with bolts.

A Little longer of center distance, 28.9mm, easily compatible with 40/42/46/50/52T for MTB and 34/36/40/42T for road. Total length is 50.8mm, which strikes the balance between compatibility and stability.

JRC Components Ceramic Pulley Wheels are compatible with all SRAM Eagle Systems. Narrow-Wide Ceramic 12 + 14tooth Jockey Wheels are crafted from billet aluminium, CNC machined and finally anodised before having hybrid ceramic bearings installed.

Ultra Lightweight at only 27g per set.

Hybrid Ceramic bearings to lessen friction and packed with grease for flawless use all year round!

Material: POM Teeth, NSK steel bearing, sice cap is alloy 7075-t6,shim is alloy 6061-t6

Teeth : 10T 12T 14T 16T

Weight: 10g/12T ; 12g/14T; 15g/16T

Rear derailleur: 7/8/9 speed, direct mount

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

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

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.

Tourney RD-TY500 Rear Derailleur

No variation in pull effort from gear to gear

Consistent, precise adjustment

Carbon fiber cage

【Rigorous Design】:Double (top or bottom) pull, 3-speed design, can matching 6/7/8/9/10/11 speed rear derailleur (★Don't matching 12 speed rear derailleur).

【Dimension】:Clip ring supports 31.8/34.9mm diameter tube. Crankset: 3 gears, compatible crankset 22-42T. universal for most mountain bike.

【Easy To Use】:Attach the front derailleur to the bike frame, temporarily tighten the toggle bolts, and then adjust the flat part of the chain guide outer guide plate to be parallel to the flat surface of the maximum crankset. Make adjustments, make it have 1-3mm space between the outer guide of the chain guide and the maximum crankset. After the adjustment is complete, tighten the ring bolts.

The Rear Derailleur Guard is certainly worth purchasing if your derailleur is unprotected. It Provides effective protection for rear derailleur, prevent the derailleur was struck distorti on or displacement in riding

The Rear Derailleur Guard is very easy to install and will actually protect the Derailleur in the event of a drop.It is Great for the kids bikes like mountain bike or MTB .Made of strong steel,very durable,suitable for most mountain bikes, road bikes, folding bicycles, racing bikes

The Rear Derailleur Guard is heavy-heavy and really protects the rear shifting mechanism.The guard appears to be made of a strong steel that will definitely reduce any potential damage in the event of accidents.this item is meant to fit onto the wheel axle, and not on the Derailleur nut.

Bicycle Rear Derailleur Hanger fit for a wide-range bike style cassette., apply mountain freewheel 11-40, 11-42, 11-46, 40T, 42T, 46T Road flywheel.

Aluminum alloy material, CNC workmanship, solid and firm, very durable.

Easy to Install