BOX Two Prime 9 Speed X-Wide Derailleur - 9 Speed PDP|Colour Rubber-like PVC

Rubber-like PVC

Cons:  Could potentially round a bolt with the gargantuan amounts of leverage you can obtain

The body accepts any 3/8" NPT male threaded fitting but note that you may need to source a 1/4" BSP female adaptor to use this with Australian pneumatic fittings

without costing a kidney

11-46T 482-grams (claimed)

BOX Two Prime 9 Speed X-Wide Derailleur - 9 Speed PDP|Colour Rubber-like PVCBOX shook up the drivetrain market last year with the release of their wide range 9 speed drivetrains. The prime 9 components are optimised for 11 50t cassettes without all the headaches of adjusting 12 gears. The Box Two Prime 9 rear derailleur is BOX's middle of the range Prime 9 offering. It includes many of the awesome features from the Box One derailleur but forgoes the adjustable clutch and uses bushing pulleys to be more wallet friendly. Who's