Shimano ST-4603 Tiagra 10-speed road STI levers

Easy operation design lever - compact lever bracket hood is made from soft rubber and anatomically shaped to allow easy braking and shifting regardless of hand position

Arced travel on the shift lever always keeps the lever in reach when sweeping shifts across the cassette

10-speed precision road shifting

Adjustable reach main lever via a shim system and light-action release lever assure easy gear shifting and braking

Super SLR brake levers for use with Super SLR brake callipers

Optical gear display incorporated into the top of the shift lever instantly shows you what gear you're in

Integrated cable adjusters

Precision shifting courtesy of Shimano indexing system

Available in Double or Triple gear systems