Best Aluminum Bike Derailleurs in 2026

Material: forged aluminum, [spring] titanium

Capacity: 42t

Cassette Range: 12-52t

Shimano fd-m310 Altus 8-Speed front derailleur, conventional swing, 42-48t, 66-69 degree

COMPATIBILITY & SIMPLE TO USE: Fit seat post size: 28.6mm. compatible with Shimano, Sram, FSA, Campagnolo type braze on front derailleur. Simply clamp the adapter on the seat tube.

STRONG: The adapter is made of high quality aluminum alloy AL6061 T6. It is also hardened by heat treatment.

LIGHT: The bike adapter weights only 40g or 1.4 oz. I will not add a lot weight to your light road bikes or MTB.

Material: aluminum

Capacity: [medium] 39T, [long] 47T

Cassette Range: [medium] 42T (2x11), 46T (1x11), [long] 40T (3x11), 42T (2x11), 46T (1x11)

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.

Anodised CNC machined bicycle jockey wheel with fully sealed bearing for center bolt derailleurs

Specification:SHIMANO & SRAM

Fits for almost all mountain bike of 11T

Item Package Weight: 0.21 kg

Item Package Length: 9.2 cm

Item Package width: 12.0 cm

Making the move to SRAM 1X

Branded cover with a bold design tying the rider to the SRAM 1X revolution

Made in Taiwan

11 speed, non-parallel shift movement - Front derailleur maintains angular relationship with the chain

Trim removed from shifter ; Shifting feels more direct and precise on up and down shifts

Steel cage design

【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.

Derailleur Hanger for Specialized Bikes

Derailleur Hanger for Stumpjumper

Material: Aluminum Alloy

Mountain double or triple

Dual Pull Design: Compatible with top or bottom routing

Shimano Reference Number: FD-M310

UNIVERSAL:  The Universal Derailleur Hanger consolidates thousands of mountain bike derailleur standards

PROTECTION: UDH protects your derailleur against chain jams by pivoting back and out of the way, and slips slightly when encountering impacts

9 speed compatible Sora triple front derailleur delivers great value to sport level road riders

Wide pivot link increases rigidity while reducing flex for improved shifting response

Aluminium links and band to save weight and increase rigidity

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.

Material: This bike derailleur pulley adopts quality aluminum alloy and ceramic material. It uses anti-rust and anti-corrosion materials to ensure long-term use, and resistant anodized machined bicycle jockey wheel ensure normal working.

Performance: this bike guide roller pulley not only reduces drag and improves cycle efficiency but is also very durable.

Additional accessories: The bicycle rear derailleur use ceramic bearings, for center bolt derailleurs which protect the bike. These pulleys run on smooth ball bearings.

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

Material: aluminum

Mount Type: clamp-on

Recommended Use: cycling

Designed for a 63-66 degree chain stay angle

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.

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.

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

STABILITY: Durable aluminum alloy and plastic alloy material, Providing excellent shifting performance ensure safe and stable.

PARM: Total capacity 34T, Largest sprocket 28T, Smallest sprocket 14T, Front chain wheel tooth difference 20T.

PLEASE NOTE: Derailleur Hanger 5 looks similar but is smaller and will NOT Fit. Derailleur Hanger 49 looks similar but will NOT fit

INCLUDES: M8 Chainring Bolt Mounting Hardware

MATERIAL: Aluminum Alloy

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PREMIUM ALUMINUM ALLOY: This bike derailleur pulley adopts quality aluminum alloy and ceramic material to ensure durable to use. It also can reduce drag force which can improve cycling efficiency.

ADDITIONAL ACCESSORY:It uses ceramic beads to protect the center bolt derailleur of the bicycle, and these pulleys run on smooth ball bearings.

【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.