Shimano Tiagra SL-4600 10-Speed Right Flat Bar Rapidfire Plus Shifter. The Shimano Tiagra SL-4600 offers Rapidfire Plus shifting with 10-speed road drivetrain compatibility.

Optical gear display indicates gear position with just a glance

RAPIDFIRE PLUS technology is suited to quick shifting giving riders the ability to downshift three gears in one stroke

2WAY-RELEASE means shifts can be released by pull of the index finger or push of the thumb

INSTANT RELEASE shifting releases cable as soon the lever is activated resulting in the quickest possible gear changes

SUPER SLR design makes use of a friction-reducing mechanism lever and cable that improves response and modulation

OT-SP41