Shimano Clamp Band Adapter - 34.9mm | Large
When Do You Need the Shimano 34.9mm Clamp Band Front Derailleur Adapter?
The Shimano 34.9mm large clamp band adapter is the hardware you need to mount a braze-on front derailleur on a frame that has a round seat tube but no braze-on fitting. It provides a secure, stable mount for braze-on front derailleurs without requiring any permanent frame modification, threading directly onto the derailleur and clamping around the tube for a clean OEM-style installation. The 34.9mm diameter covers larger-diameter seat tubes common on mountain and gravel frames, including oversized aluminum and many steel frame profiles.
This adapter is compatible with Shimano braze-on specification front derailleurs across multiple groupsets, from Tourney and Altus up through Deore and Alivio, as long as the derailleur uses the braze-on mounting interface. Frame seat tube diameter must be confirmed before ordering, as using the wrong clamp diameter will prevent proper alignment and secure fastening. For older or budget builds being fitted with newer braze-on derailleurs, or any frame that lacks an original braze-on mount, this adapter is the straightforward solution.
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Shimano Clamp Band Adapter - 34.9mm | Large
Shimano Clamp Band Adapter - 34.9mm | Large
When Do You Need the Shimano 34.9mm Clamp Band Front Derailleur Adapter?
The Shimano 34.9mm large clamp band adapter is the hardware you need to mount a braze-on front derailleur on a frame that has a round seat tube but no braze-on fitting. It provides a secure, stable mount for braze-on front derailleurs without requiring any permanent frame modification, threading directly onto the derailleur and clamping around the tube for a clean OEM-style installation. The 34.9mm diameter covers larger-diameter seat tubes common on mountain and gravel frames, including oversized aluminum and many steel frame profiles.
This adapter is compatible with Shimano braze-on specification front derailleurs across multiple groupsets, from Tourney and Altus up through Deore and Alivio, as long as the derailleur uses the braze-on mounting interface. Frame seat tube diameter must be confirmed before ordering, as using the wrong clamp diameter will prevent proper alignment and secure fastening. For older or budget builds being fitted with newer braze-on derailleurs, or any frame that lacks an original braze-on mount, this adapter is the straightforward solution.
Original: $18.99
-70%$18.99
$5.70Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
When Do You Need the Shimano 34.9mm Clamp Band Front Derailleur Adapter?
The Shimano 34.9mm large clamp band adapter is the hardware you need to mount a braze-on front derailleur on a frame that has a round seat tube but no braze-on fitting. It provides a secure, stable mount for braze-on front derailleurs without requiring any permanent frame modification, threading directly onto the derailleur and clamping around the tube for a clean OEM-style installation. The 34.9mm diameter covers larger-diameter seat tubes common on mountain and gravel frames, including oversized aluminum and many steel frame profiles.
This adapter is compatible with Shimano braze-on specification front derailleurs across multiple groupsets, from Tourney and Altus up through Deore and Alivio, as long as the derailleur uses the braze-on mounting interface. Frame seat tube diameter must be confirmed before ordering, as using the wrong clamp diameter will prevent proper alignment and secure fastening. For older or budget builds being fitted with newer braze-on derailleurs, or any frame that lacks an original braze-on mount, this adapter is the straightforward solution.
