Wheels Manufacturing Seatpost Collar

This collar is specifically sized for a 28.6 mm seat tube diameter. You should measure the outer diameter of your seat tube—not the seatpost itself—using a digital caliper to ensure an exact match before purchasing.

The bolt-and-barrel nut design provides a more consistent, even clamping force around the entire seat tube. It is generally more secure and less prone to slipping or loosening over time compared to quick-release mechanisms, making it ideal for riders who don't need to adjust their saddle height mid-ride.

Anodizing is a durable electrochemical process that bonds color to the aluminum, making it significantly more resistant to fading and scratching than standard paint. While it is tough, it can still show wear if subjected to abrasive grit or frequent tool contact.

The stainless steel bolt and barrel nut are highly resistant to corrosion, but it is good practice to apply a light layer of grease to the bolt threads during installation. This prevents seizing and ensures you can easily adjust or remove the collar in the future.

Yes, the precision-machined aluminum construction is safe for carbon components, provided you follow the torque specifications recommended by your bike frame manufacturer. Always use a torque wrench to avoid over-tightening and damaging delicate carbon structures.