31.8mm Bike Seat Clamp 1.25 Inch Seat Post Clamp With Installation Holes For Rear Rack And Cargo Rack Aluminum Alloy Black Fits 31.8mm Seat Tube For Easy Gear Hauling On Commuter Or MTB Setups

Aluminum 31.8mm Seat Clamp with Rear Rack Holes
✔️ 31.8mm clamp with rear rack holes; 1 clamp + 2 screws, 40g

This seat clamp is designed for bikes with a 31.8mm (1.25") seat tube and a 27.2mm seat post. It adds rear rack mounting holes so you can attach a cargo rack on commuter or MTB setups without extra frame mounts. Built from lightweight aluminum alloy, it stays strong while keeping weight low at about 40 grams.

✅ Fits seat tube 31.8mm (1.25") and seat post 27.2mm
✅ Rear rack installation holes included for cargo rack upgrade
✅ Aluminum alloy construction, around 40g, rust-resistant
✅ Screws lock the saddle tube securely to prevent movement
✅ Packing includes 1 seat clamp and 2 screws

💡 What is a 31.8mm bicycle seat clamp with rear rack holes used for?

It’s a handy upgrade that adds secure saddle clamping and a rear rack mounting option.

• Allows mounting a rear luggage rack on bikes that lack mounting points
• Keeps saddle in place with tightened screws, preventing slip
• Lightweight aluminum alloy keeps weight down on commutes or MTB
• Works with seat tubes around 31.8mm and seat posts around 27.2mm