Outdoor bike accessory that adapts braze-on front derailleurs to round tubes while improving clamp security. Riders gain confidence on rough roads thanks to a lightweight, corrosion-resistant design, Alomejor Bike Derailleur Clamp. Is this the simplest way to convert a braze-on mount for reliable on-ride performance?
⚡ At a Glance
- • Clamping Security: Tight grip for braze-on front derailleurs, resists sliding under load
- • Best for: Cyclists fitting a braze-on front derailleur to a round tube
- • Not ideal for: Frames without braze-on mounts or non-standard tube diameters
Adapter clips a braze-on front derailleur to round seat tubes in two sizes. Premium aluminium alloy keeps weight low while offering corrosion resistance.
Stable derailleur placement, with aluminium alloy construction
Premium aluminium alloy forms the clamp body with a hollowed profile that reduces mass while keeping structural strength. A close-fit clamping surface minimises movement on the tube when tightened.
Maintains correct front derailleur alignment during rides, reducing chain rub and missed shifts for more consistent gear changes.
Fits common seat tube diameters, with 31.8mm and 34.9mm options
Two diameter options match standard tube sizes, making the clamp suitable for the most common conversion scenarios. Clear size choices simplify selection for typical road and mountain frames.
Allows braze-on front derailleurs to be used on frames that lack a direct mount, providing correct spacing and alignment without custom fabrication.
Faster maintenance and swaps, with easy install and removal
A straightforward clamping mechanism secures the adapter firmly yet allows quick loosening for removal. The design avoids complex fittings, so reinstalling or adjusting the derailleur is quick.
Makes chainline checks and component swaps quicker, saving time during tune-ups or when changing equipment between rides.
✨ The 4 Key Reasons for Alomejor Bike Derailleur Clamp
- Accurate Sizing , Ensures correct fit for common 31.8mm and 34.9mm tubes
- Hollow Profile , Reduces weight while keeping necessary strength for riding
- Easy Removal , Lets riders perform maintenance and adjustments quickly and simply
- Manufacturer Support , Seller offers responsive help and satisfaction guarantee
📋 Technical Details at a Glance
- Category: Outdoors
- Product Type: Bike front derailleur clamp
- Compatible Mount: Braze-on front derailleur
- Clamp Sizes: 31.8mm, 34.9mm
- Material: Aluminium alloy
❓ Frequently Asked Questions
Q: Is the clamp compatible with braze-on front derailleurs?
A: Compatibility covers braze-on front derailleurs, designed to adapt those mounts to round tubes.
Q: Which tube diameters are available?
A: Available sizes are 31.8mm and 34.9mm to match common seat tube diameters.
Q: What material is the clamp made from and is it durable?
A: Construction uses premium aluminium alloy with a hollow design, offering corrosion resistance and a balance of lightness and strength.
🏆 Our Verdict
Cyclists who need to fit a braze-on front derailleur to a round tube will find the clamp practical and reliable. Aluminium alloy construction combined with two size options and an easy clamp design makes it a straightforward solution for maintaining derailleur alignment. Considered a durable, low-maintenance upgrade that delivers clear long-term value for routine riding and workshops.
