Cannondale Factory Seatpost Clamp 34.9mm Frame / 31.6mm Seatpost

Cannondale Factory Replacement Seat Binder Clamp – 34.9mm / 31.6mm

This genuine Cannondale factory replacement seatbinder clamp is designed for frames with a 34.9mm seat tubeusing a 31.6mm seatpost. Ultra-lightweight and precision-machined, it delivers secure clamping force while maintaining Cannondale’s clean, factory-correct fit and finish.

At just 13 grams, this clamp is ideal for riders looking to restore original equipment performance or shave grams without sacrificing reliability.

Key Features & Benefits

• Genuine Cannondale OEM replacement part

• Designed for 34.9mm frame seat tubes

• Compatible with 31.6mm seatposts

• Ultra-lightweight construction – only 13 grams

• Provides secure, even clamping force

• Perfect for replacements, restorations, or weight-conscious builds

Specifications

• Frame Seat Tube Diameter: 34.9mm

• Seatpost Diameter: 31.6mm

• Weight: 13 g

• Manufacturer Part Number (MPN): KP388

• Application: External seatbinder clamp

Compatibility Notes

• For Cannondale frames requiring a 34.9mm clamp / 31.6mm seatpost

• Always verify frame and seatpost diameters before ordering

• Not compatible with 30.9mm, 27.2mm, or internal wedge-style systems

Why Choose Genuine Cannondale Hardware?

• Ensures correct clamping force and frame safety

• Maintains factory aesthetics and fitment

• Preserves ride quality and long-term durability

• Ideal for warranty replacements and OEM restorations

A lightweight, factory-correct seatpost clamp for Cannondale frames—perfect for precision builds and reliable everyday riding.