Shimano Alivio M4000 MTB Bike 3×9 Speed FD-M4000 RD-M4000 Front Rear Derailleur Set

Option:
1, Front derailleur: Front derailleur (FD-M4000)
2, Rear derailleur: Rear derailleur (RD-M4000)
3, Full set(2PCS): Front derailleur (FD-M4000) + Rear derailleur (RD-M4000)
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Item: Front derailleur
Model: FD-M4000
Speed: 3×9 Speed
Compatible chain: HG 9-speed
Mount: Clamp-on 
Clamp Band size: 34.9mm
(Pls leave message if you need 31.8mm adapter)  
Action: Top Swing
Cable route type: Dual-Pull(Top and down pull)
Top gear teeth: 40T
Total capacity: 18T
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Item: Rear derailleur
Model: RD-M4000
Speed: 9 Speed 
Mount: Direct mount
Cage: Long cage
Compatible chain: HG 9-speed
Total capacity: 45T
Max sprocket: 36T
Min sprocket: 11T