The Shimano ST-5703 Left Hand Main Lever Assembly is a direct replacement component for use with the Shimano STI shift/brake systems. Made to Shimano’s standards, this black lever assembly restores reliable control and performance to your bike’s left-side brake and shift interface — ideal for maintenance, repair, or upgrades.
Genuine Shimano replacement part
- Product Type - Brake Shift Spares
- Discipline - Road
- Colour - Black
- Size - Left Hand
- Di2 - No
ST-5703 Left Hand Main Lever Assembly, Black
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The Shimano ST-5703 Left Hand Main Lever Assembly is a direct replacement component for use with the Shimano STI shift/brake systems. Made to Shimano’s standards, this black lever assembly restores reliable control and performance to your bike’s left-side brake and shift interface — ideal for maintenance, repair, or upgrades.
Genuine Shimano replacement part
- Product Type - Brake Shift Spares
- Discipline - Road
- Colour - Black
- Size - Left Hand
- Di2 - No