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For over 20 years, Thudbuster has been the bicycle industry standard in suspension seatposts by providing unequaled comfort and reliability to riders around the world.
Thudbuster ST Seatposts are back in stock! Get one while they last!
The latest generation Thudbuster ST is superior to its predecessor in every way. Building on Thudbuster’s proven parallel linkage technology we have completely re-designed the seatpost for increased durability, a higher rider weight limit, and additional suspension travel, as well as ease of use through tool-free elastomer change and a single-bolt seat clamp design.
By improving on this already legendary design, we’re confident to say that the newest generation Thudbuster is the most advanced suspension seatpost ever made.
Designed specifically with the rigors of e-bikes and daily commuting in mind, the latest generation Thudbuster ST includes 50mm of travel to significantly diminish shocks and impacts from broken pavement, cobblestones or any other mixed surfaces.
Thudbuster ST is now able to support riders up to 330lbs (150kg) and incorporates a tool-free, interchangeable elastomer system to quickly and easily adjust the seat post for a variety of rider weights.
The Thudbuster Parallel Linkage technology stays in the direct path of the natural travel of the rear wheel. As a bump lifts the back of a bicycle, the rear wheel pushes up and forward into the rider. The Thudbuster works by compressing along the exact opposite path — down and rearward — absorbing force at the same rate. This results in a natural suspension feel without being overly active, and allows for more travel without compromising pedaling position.
| Setback | 0mm (unweighted) |
|---|---|
| Post | Forged aluminum |
| Seat Clamp | Single bolt fastening and angle adjustment design |
| Pivots | Threaded, serviceable, hard anodized aluminum axles flanged PTFE bushings |
| Elastomer | Medium firm elastomer pre-installed from the factory. Soft and Firm elastomers included. Extra Soft and Extra Firm elastomers sold separately |
| Travel | 50mm / 1.97in |
| Length | 27.2 – 345mm. 30.9 + 31.6 – 375mm |
| Weight | 580 grams (31.6) |
| Max Rider Weight | 330lbs / 150kg |
| Extension | Minimum – 100mm / Maximum – 274 |
| Diameter (Direct Fit) | 27.2, 30.9, 31.6 |
The Thudbuster seatposts are designed to work with rounded rail saddles. We have not tried them with these saddles you have mentioned but I see them used on other seatposts using a traditional clamp so I do not see why they wouldnt. We have not tested to be 100% sure but it appears they would fit.
The maximum extension of the Thudbuster ST is 274mm for the 30.9mm & 31.6mm sizes and 244mm (27.2mm).
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Verified OwnerHaven’t had a chance to ride much yet with the Thudbuster but it seems to work as advertised. I have ordered a new Brooks saddle and think it will be a good combination.
Verified review - view original
Verified Owner
Verified OwnerNot very good at absorbing bumps. Tried 4 different inserts. All felt hard. I could feel each bump up my spine. The seat clamp is a joke. Even the redesigned replacement one still stinks. It's supposed to fit 7-9 mm rails, I had to buy a longer screw to mount 8 mm rails. Sold it and bought a more comfortable seat post. Cost less too.
Verified review - view original
