Collar for the fixture on a round tube for a brazed derailleur

Front derailleur clamp for round tube – precise mounting for road bikes

Enhance the performance of your drivetrain with this front derailleur clamp, designed for road bike frames that do not include a welded-on derailleur tab. Strong, reliable, and easy to install, it ensures perfect positioning of your front derailleur on a round tube, delivering smooth and accurate shifting between chainrings.

Main features

• Front derailleur compatibility: suitable for braze-on front derailleurs from major brands (Shimano, SRAM, Campagnolo).

• Round tube diameter options: available in multiple sizes (28.6 mm – 31.8 mm – 34.9 mm) to fit most modern and classic road frames.

• Reinforced material: CNC-machined aluminum or treated steel depending on the model, providing strength and durability.

• Secure clamping system: stainless steel or reinforced steel hardware for a firm and stable hold on the tube.

• Lightweight design: engineered to add minimal weight to the drivetrain—ideal for performance-oriented road bikes.

• Excellent stability: reduces micro-movements of the derailleur and improves shifting precision.

Technical specifications

• Drivetrain compatibility: suitable for double or triple chainrings, mechanical or electronic (depending on derailleur type).

• Finish: anodized or painted for increased corrosion resistance.

• Easy installation: quick mounting with no frame modification required, compatible with all standard road drivetrains.

• High rigidity: contributes to smooth and reliable chain transitions between chainrings.

• Compact design: discreet and perfectly integrated with the shape of the seat tube or down tube.

Why choose this front derailleur clamp ?

This front derailleur clamp is the ideal solution for fitting a braze-on derailleur to a road bike frame not originally designed for it. It provides:

• perfect derailleur alignment,

• smoother chain shifting,

• improved overall drivetrain reliability,

• wide compatibility with most front derailleurs on the market.

A must-have accessory for restoring a road bike, upgrading a drivetrain, or replacing an old or worn-out clamp.