protective and comfortable one size fits all design

Combine this with the dipped nose it minimises the chances of your shorts getting hooked up in sticky situations

Diameter: 33mm (hallelujah)

It is now lighter

Shimano Deore RD-M5100 11 Speed Rear Derailleur - Long Cage - 11 Speed Replace Images protective and comfortable one sizeUnlock the versatility of wide range 11 speed gearing with the Shimano Deore RD M5100 11 Speed Rear Derailleur. Designed to pair with the Deore CS M5100 11 51t cassette, this derailleur has a huge capacity which enables it to smoothly shift in and out of that monster 51t cog. Shimano's Shadow Plus design creates a low profile to help prevent damage from rocks and trail debris. Chain stabilising technology makes for a quiet drivetrain in all gear