Thomson seatpost collar
USA orders totaling $100 or more receive free shipping.
This applies to standard shipping in the contiguous 48 states and military APO/FPO addresses only. Oversized items are excluded from the free shipping offer.
All other shipping charges are shown in the cart before checkout. Free shipping does not apply to orders shipping outside the USA.
For complete information, please see our Shipping page.
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Returns for eligible products are accepted within 30 days of the purchase date. Some exclusions apply.
For complete information, please see our Returns page.
The Thomson collar utilizes the seatpost bolt/washer/barrel nut combo that has proven to be strong over the years.
This fastener combination allows float on both sides of the collar slot ensuring consistent clamping force. The bolt hole angle, height of the collar and offset slot all help create a collar that generates maximum clamping force at only 20-25 inch-lbs of torque.
• made in USA
• color: black, silver
• sizes: 29.8 (30.0), 31.8, 34.9mm
• weight: approx. 26g
Not sure which size you need? Don't just take a wild guess - measure your seat tube or ask us!
Helpful hints: Most steel frames that take a 26.8 or 27.2mm seatpost use a 29.8 (30.0) collar. Most aluminum frames that take a 27.2mm seatpost use a 31.8 collar. Aluminum frames that take a 31.6mm seatpost use a 34.9 collar.