Is this Sora rear derailleur (rd r3000 gs) actually compatible with 8 speed cassette or is it seller mistake? Can't find any other information online. : r/bikewrench
Shimano Sora ST-3300 RIGHT ONLY 8 Speed Shifter Brake Lever | eBay
Amazon.com: SENSAH STI Road Bike Shifters Double 2×8/2×9 Speed Lever Brake Bicycle Derailleur Groupset Compatible for Shimano Claris Sora (2*8s-Lever) : Sports & Outdoors
8 Speed Shimano Sora RD-2300 Medium Cage Rear Derailleur
Amazon.com : SHIMANO CS-HG50 Sora Bicycle Cassette (8-Speed, 12/25T, Silver) : Bike Cassettes And Freewheels : Sports & Outdoors
SHIMANO SORA R3000 | SHIMANO BIKE-EU
Shimano Sora STI Shifters: 8 Speed - Double/triple - ST-3300 & ST-3303 - Front & Rear - Bike Recyclery
Shimano Sora raer derr. for 8 speed. – Defietsenmaker
Shimano Sora 8 Speed Road Bike Groupset Build Kit STI Shifters Triple Crank 170 | SidelineSwap
Amazon.com: SENSAH STI Road Bike Shifters Double 2×9 Speed Lever Brake Bicycle Derailleur Groupset Compatible for Shimano Sora 9 Speed Shifter(2*9 Lever) : Sports & Outdoors
Shimano Sora SS9-Speed Rear Derailleur - Bike Shop | Proteus Bicycles | College Park, MD