Ultegra r8000 short cage rear mech with some sort of extended

SHIMANO ULTEGRA RD-R8000-SS/RD-R8000-GS Rear Derailleur 11 Speed

Derailleur bent by branch : r/bikewrench

Anyone know about running a sram x9 with medium sized cage on a wide range cassette (11-40 tooth) : r/bikewrench

Ultegra rear derailleur with wide link design gives quick accurate shifts and excellent drivetrain efficiency. Wide outer link plates increase pivot joint rigidity to reduce shifting deflection. Lightweight aluminium pulley cage helps reduce weight without sacrificing shifting performance. Wide gear ratio compatible.

Shimano Ultegra RD-6700A-GS 10-Speed Medium Cage Rear Derailleur

Shimano Ultegra RD-6700 10 Speed Rear Derailleur - Long Cage, 8/10

Shimano Ultegra Di2 RD-R8050 Rear Derailleur Short Cage - bicycle

Derailleur bent by branch : r/bikewrench

Review: Shimano Ultegra R8000 groupset

SHIMANO ULTEGRA RX Rear Derailleur 11-speed

A guide to rear derailleur cage length: Short, medium or long