Cannondale Derailleur Hanger F-Si Synapse M12x1 Hex

Cannondale Rear Derailleur Hanger – Hex Back

F-Si / Synapse | M12x1 Single Lead | K33040

The Cannondale K33040 Rear Derailleur Hanger is a genuine factory replacement designed for select Cannondale mountain and road frames using M12x1 single-lead thru-axles. Featuring a hex-style back interface, this hanger ensures precise fit, secure axle engagement, and optimal drivetrain alignment.

Correct hanger. Precise shifting. OEM performance.

OEM Replacement for Modern Cannondale Frames

Compatible with select models including:

• 2020 Cannondale F-Si Carbon
• 2022 Cannondale Synapse Carbon
• Other Cannondale frames using M12x1 single-lead axles

M12x1 Single-Lead Axle Compatibility

• Designed for 12mm x 1.0 thread pitch axles
• Single-lead thread for proper axle engagement
• Ensures correct wheel alignment and retention

Hex Back Design

• Features hex-style back interface
• Provides secure and precise mounting
• Maintains proper hanger alignment under load

Precision Fit & Frame Protection

• Restores accurate derailleur alignment
• Ensures smooth, consistent shifting
• Designed to absorb impact and protect frame

Complete Kit

• Includes 1 derailleur hanger
• Includes 1 mounting bolt
• Ready for installation

Specifications

• Brand: Cannondale
• Product: Rear Derailleur Hanger
• Compatibility: F-Si Carbon (2020), Synapse Carbon (2022), others
• Axle Type: M12x1 single-lead
• Design: Hex back
• Included: Hanger + mounting bolt
• MPN: K33040

Ideal For

✔ Cannondale MTB and road bike repairs
✔ Replacing bent or damaged hangers
✔ Maintaining drivetrain performance
✔ Keeping a spare hanger on hand

Why Choose Cannondale K33040?

• Genuine OEM fit and function
• Designed for M12x1 axle systems
• Hex back for secure mounting
• Ensures precise shifting alignment

The Cannondale K33040 Rear Derailleur Hanger is the correct OEM solution for maintaining drivetrain precision and axle compatibility on select Cannondale F-Si and Synapse models.