Shimano ST-R9120 Left Lever Diaphragm

The Shimano ST-R9120 left lever diaphragm replaces a damaged diaphragm in a road disc brake shifter. You need it if the diaphragm in your left lever is damaged.

• Replacement for the left side, so you can repair the lever without replacing the entire shifter
• Shimano code Y0C578000, to help you order the correct part
• Compatible with ST-R9120, ST-R8020/R8025 and ST-R7020/R7025
• Also suitable for some compatible GRX shifters and RX810, RX600 and RX400 levers
• Before ordering, check the model marked on your lever against the list

Technical specifications

• Shimano code: Y0C578000
• Side: Left
• EAN: 4550170233334
• Compatibility: R9120, R8020, R7020, RX810, RX600, RX400 levers
• Listed shifters: ST-R9120, ST-R8020/R8025, ST-R7020/R7025, some compatible GRX shifters

Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.