Shimano Alivio SL-M4000 3x9-speed Shifter Set

The SHIMANO ALIVIO SL-M4000-R shift lever provides responsive rear shifting for 9-speed mountain bike drivetrains. The RAPIDFIRE PLUS lever is suited to quick shifting, giving riders the ability to downshift three gears in one stroke.
The SHIMANO ALIVIO SL-M4000-L shift lever provides responsive front shifting for 3x9-speed mountain bike drivetrains. The RAPIDFIRE PLUS lever features 2-WAY RELEASE, which allows for relief shifts by either pull of the index finger or push of the thumb.