Canecreek is recalling some of their Thudbuster Quad suspension seatposts. The
range of seatposts include serial numbers between 10,894 and 18,710. The serial
number is inside the seatpost towards the bottom (in the part you cut off so it
would fit into your frame).
You can call Canecreek at 800-234-2725 or email them at firstname.lastname@example.org
They will have you return your seatpost for some free upgrades.
I love my Thudbuster,
Bainbridge Island, WA