The Thudbuster uses a rubber-like material (a polyurethane elastomer) combined with two pivoting arms to suspend the rider.

Yes. Every new Thudbuster ST seatpost includes a set of elastomers to fit your weight and riding style. The Thudbuster will come with a medium firm elastomer (150-200lbs / 68-90kg rider weight) pre-installed in the post. Thudbuster will also come with a Soft Elastomer (100-150lbs / 45-68kg rider weight) and a Firm elastomer (200-250lbs / 90-115kg rider weight) inside the box.  For really lightweight and heavier riders, we also make Extra Soft (under 100 / 45kg rider weight) and Extra Firm (250-330lbs / 115-150kg rider weight) Elastomers. They are available on our Seatpost Parts and Accessories page. For detailed elastomer installation instructions, check out our complete instruction manuals for the ST or LT.

Thudbuster ST uses a two piece elastomer, the inner elastomer can be pressed out by hand and replaced with the desired stiffness elastomer.

Thudbuster LT uses a one piece elastomer which can be removed and swapped using the the gold release button.

More details on how to remove and replace elastomers can be found in the instruction manual and on the Cane Creek website.

The Thudbuster follows standard seatpost diameters. Different bicycles require different diameter seatposts. To find out the diameter of your seatpost, you must remove the seatpost from the bicycle frame and look for the size, which is stamped just below the “Minimum Insertion” line toward the bottom. The number will be a three-digit number (such as 26.8 or 27.2 or 31.6). If you are unable to read the size, you may need to take the seatpost to your local bike shop and have them measure it using calipers.

Cane Creek offers various seatpost shims to accommodate a variety of seatpost diameters larger than 27.2. Click on the link provided to see the shim sizes that are available. Seatpost Parts and Accessories

The minimum insertion line represents the least amount of seatpost length required to be installed inside the bicycle’s seat tube. Thudbuster requires a minimum of 100mm of insertion for all models.

No. The Thudbuster is a complete seatpost that replaces your existing seatpost.

The suspension mechanism requires at least 101mm (ST) from the saddle rails to the bicycle frame. This is a reasonable clearance that almost all riders with a properly sized frame will have.

Yes. The Thudbuster uses a typical saddle-clamp mechanism, allowing you to use any saddle that has the standard double-mounting rail design.