Derailleur System (4)

Option: 1, Left(3 Speed) 2, Right(7 Speed) 3, Left + Right(3×7 Speed) —————————————————————————— Model: Sram X3 Left: 3 Speed Right: 7 Speed Color: Black Optical gear display Come with inner...

Option: 1, Left(3 Speed) 2, Right(8 Speed) 3, Left + Right(3×8 Speed) —————————————————————————— Model: Sram X4 Left: 3 Speed Right: 8 Speed Color: Black Optical gear display Come with inner...

Option 1, Black (Medium cage) 2, Black (Long cage) 3, Silver (Medium cage) —————————————————————————— Model: Sram X4 Color: Black / Silver Speed: 7/8/9 Speed Mount: Direct mount Cage: Medium cage...

Option: 1, 34.9mm 2, 31.8mm: 34.9mm with adapter —————————————————————————— Model: Sram X4 Speed: 3×7/8 Speed Clamp Band size: 31.8mm/34.9mm Color: Black Material: Chrome-plated steel Action: Top Swing Cable route type:...