Designed specifically for use with a double chainset. The RD-RX820 is compatible with 11-34T and 11-36T cassettes, 12-speed SHIMANO MTB cassettes, and the chain tensioner has an ON/OFF switch for easy wheel removal.
eBay
1Pcs Universal Bike Rear Derailleur Tail Hook Bicycle Alloy Rear Derailleur Hanger Racing Cycling Frame Gear Tail Hook Parts
Aliexpress UK
Type A:MTB 7/8/9 Speed. Type B:MTB 10 Speed. Type C:MTB 11 Speed. Part Type : Rear Derailleur. Type C : MTB 11 Speed. Type C:1x MTB 11 Speed. Type B : MTB 10 Speed. Type B:1x MTB 10 Speed.
eBay
Shimano GRX RD RX820 Rear Derailleur RX822 SGS Long Cage 12 Speed Rear Derailleur SHADOW RD+ For Gravel Bike Bicycle
Aliexpress UK
Bargain Price! (£42.99 List).
eBay
SRAM X7 REAR DERAILLEUR 9SPEED REAR DERAILLEUR short OR Medium CAGE MTB /FOLDING bike Groupset Bike Kit
Aliexpress UK
To Customer: Thank you for choosing K007. Our store is committed to providing you the best quality products Service. If you have any questions about the products after receiving the packages, please contact us and we will solve them for you as soon as possible. Attention: The goods will be shipped from UK Delivery time: 2 to 4 working days Support 60 days return policy Reply within 24 hours Description: Concave guide wheel screw Smooth/easy operation shifting performance Wide connection design for precise shifting and durability Wide connection design, dual servo structure, low-key concept .
eBay
LTWOO GR7 1x10 Speed Gravel Road Bike Mechanical Brakes Derailleur Kits Without Damping Rear Derailleur 42T 46T 50T Cassette
Aliexpress UK
Utilising EXACT ACTUATION™ technology, it eliminates slop and ensures consistent shifting. Prepare yourself for the ride ahead. Compatible with 36T cassettes. Specifications; Speed 10s Cable Pull Ratio Exact Actuation Cage Length Short Cage Max Tooth Compat.
eBay
SHIMANO DEORE SLX XT RD XTR M6100 M7100 M7120 M8100 M8120 M9100 12S SGS Rear Derailleurs MTB Derailleurs 12-Speed Mountain Bike
Aliexpress UK
Wide link Shadow design Dyna-Sys 10-speed top normal Deore rear derailleur. Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain. Direct cable routing prevents snagging from any trail side hazards.
eBay
Shimano DEORE XT RD-M750-SGS 9S Rear Derailleur For MTB Mountain Bike Long Cage Maximum Compatibility With 11-34t Cassette
Aliexpress UK
Believed Shimano Compatible too.
eBay
SHIMANO DEORE M5100 1X11Speed Groupset RAPIDFIRE PLUS Shifting Lever Rear Derailleur Sunshine MTB Bike Cassette 46T 50T 52T
Aliexpress UK
Used on bikes where the derailleur is held in place by the wheel nuts. 1 x Bike Rear Derailleur Hanger. Suitable for CarreraBanshee (2004 onwards), Banshee X (2004 onwards), Blast 20" (2008 onwards), Blast 24" (2008 onwards), Crossfire 1, 2 and 3 (2011), Detonate 20" and 24" (2008 onwards).
eBay
WHEELTOP -EDS TX Road bike Groupset Electronic Wireless Carbon aluminium alloy Rim ,Disc Brake 7-14s Speed Front Rear Derailleur
Aliexpress UK