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
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- Brake lever+shift lever set (l+r)
- Shimano ST-6603 "Ultegra"
- Super SLR / Dual Control
- 10-speed
- For Flight Deck cyclocomputer
- Ergonomic design: Refined lever hood for improved ergonomics
- Robust internal mechanism
- Same lever response as Dura-Ace
- Ergonomic shift stroke movement
- Effortless shifting:Shift effort is reduced on release lever
- 490 grams per pair
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