Best Bmx Rear Bike Derailleurs in 2026

Stable Shifting Performance

Shimano Shadow Construction

Low profile rear design

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

Shimano Acera M360 7

8-Speed Rear Derailleur with SmartCage, Black

Shimano Acera Rear derailleur compatible with all Shimano 7 & 8 Speed shifters. Advanced light action design.

Direct frame fit. SIS Rear index shifting.

Megapulley oversize jockey wheel. Smartcage pulley plate.

Shimano 3500 Rear Road Mech

Colour Black

9 speed

Stabilizer switch to reduce chain slap

Low profile Shadow design

10-Speed Shadow Plus MTB rear derailleur

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.

Rear derailleur that ensures precise, easy gear shifting.

Integrated chain stabilizer s accurate shifting in a variety of conditions.

11-speed range.

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

Extended B-Knuckle for improved clearance for 28t cassettes

Exact Actuation shifting provides fast, accurate shifts

Outside Carbon Cage designed for precise chain management and new reduced profile inner cage

Details:Compatible with the Cannondale Trail 15-19, Adventure 17-19, Bad Boy 16-19, Catalyst 16-19, Contro 15-16, Cujo 17-19, Foray 17-19, Kids Cujo, Kids Trail, Kids Quick, Kids Street, Kinneto, Law Enforcement, Mavaro Neo, Quick 16-19, Quick CX 15-19, Quick Neo 18, Scarlet, Tango16-19, Tesoro Neo, TreadwellThis solid derailleur hanger is designed to keep the derailleur stabilized during the roughest riding conditionsComes with hanger and mounting hardware (2 screws)

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

Cage Lengths: GS-medium<br/>Capacity: 37T<br/>Derailleur Action: Top-Normal (Traditional)<br/>Derailleur Color: Silver<br/>Derailleur Color: silver/black<br/>Drivetrain Spacing: Shimano/SRAM 9<br/>Largest Cog: 34teeth<br/>Min/Max: 11/34T<br/>Shifter/Rear Derailleur : SRAM 1:1<br/>Speeds: 8/9sp<br/>Speeds: 9sp<br/>Weight: 290g<br/>Weight: 320g

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

Please note there is 2 versions of this hanger. Both Derailleur Hangers look the same but have a different fit. The updated version fits some new models. Please contact us if you are unsure as there is over 7000 derailleur hangers and they are not universal. GT uses 30 different hangers based on frame design

Before installing a derailleur hanger, the rear dropouts need to be check for alignment. If the rear dropouts are not aligned and the new derailleur hanger is installed, it will break or bend. This is a specific tool that is used to check alignment.

Mounting Bolt included with derailleur hanger

Sram X3 is a great beginners or light adventurers rear derailleur

The X3 rear derailleur sets the standard for opening price point shifting performance

Outer cage made of steel

TX models come with Smart Cage which gives MegaRange compatibility with a shorter derailleur cage

TX models come with Smart Cage which gives MegaRange compatibility with a shorter derailleur cage

Chain Wrap Capacity: 43

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: SHIMANO TOURNEY 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.

*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.

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;

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.

105 RD-R7000 Rear Derailleur

【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.

【Bike Guide Roller】Diameter: 2 inch / 50cm; Teeth: 12T. Stronger compatibility with flexible rotation!

【Lightweight & Durable】Made of quality aluminum alloy with fully sealed bearing for center bolt derailleurs, Durable to use and longer life

【Ceramic Guide Pulley】Ceramic material can reduce drag force which can improve cycling efficiency. Ceramics bearing, super lubricating, noiseless!

Universal bicycle rear derailleur protection: it really protects the front derailleur from knocks in the event of a fall

Easy to install: pull out axle, thread protection on axle, tighten with nut, done

High quality: the bicycle safety bar is made of high-quality iron, rust-proof and durable