Cannondale SuperX Synapse Carbon Disc Seat Binder Wedge Kit

Cannondale Factory Replacement Integrated Seat Binder Wedge Kit – KP448

This original Cannondale factory replacement integrated seat binder wedge kit is designed for 2017+ SuperX cyclocross bikes and 2018+ Synapse Carbon Disc road frames that use a 25.4mm seatpost. Manufactured to Cannondale OEM specifications, this wedge kit provides secure internal seatpost clamping while maintaining the clean, aerodynamic frame design Cannondale is known for.

Ideal for replacement during service, frame builds, or restoring factory-correct seatpost retention.

Features & Benefits

• Genuine Cannondale OEM replacement part

• Integrated internal wedge-style seatpost clamp

• Designed specifically for 25.4mm seatposts

• Maintains clean aero appearance with no external collar

• Even clamping force for secure, frame-safe retention

• Direct factory-fit replacement

Kit Contents

• Integrated seat binder wedge kit – 1 pc (as pictured)

(Seatpost and additional hardware not included)

Compatibility

✔ 2017+ Cannondale SuperX (Cyclocross)
✔ 2018+ Cannondale Synapse Carbon Disc (Road)
✔ Frames designed for 25.4mm seatposts

❌ Not compatible with rim-brake Synapse frames
❌ Not compatible with frames using 27.2mm or 31.6mm seatposts
❌ Not compatible with non-integrated or external seat collars

Part Information

• Manufacturer: Cannondale

• Cannondale Part Number: KP448

• Application: Internal integrated seat binder wedge

• Seatpost Diameter: 25.4mm

• Mount Type: Internal wedge clamp

Recommended Use

• Replacement of worn or damaged seat binder hardware

• Frame rebuilds and warranty replacements

• Restoring proper seatpost security and alignment

Why Buy Genuine Cannondale OEM Parts?

Using authentic Cannondale components ensures:

• Correct clamping force and frame protection

• Perfect fit with SuperX and Synapse Carbon Disc frames

• Long-term durability and reliability

• Factory-correct appearance and resale value