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Thudbuster ST
Shock Absorbing Seatpost
Thudbuster ST
Shock Absorbing Seatpost
Thudbuster ST is a shock-absorbing suspension seatpost that reduces riding pain and increases comfort. 2 inches (50mm) of vertical suspension travel absorbs bumps, dips, and drops in the road or trail, softening your ride and making biking more enjoyable so you can ride longer.
Thudbuster ST is our most versatile suspension seatpost, offering the highest weight limit and a shorter overall height for riders that need low seat heights.
Highlights:
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Reduce riding pain & increase comfort
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2 inches / 50mm suspension travel
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330lb/150kg rider weight limit
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No special tools needed for seat installation or elastomer spring change
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Customize ride feel with 3 included elastomer springs
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Patented Parallel Linkage Technology preserves natural pedaling motion
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REVIEWS
HEAR WHAT OTHERS HAVE TO SAY
Thudbuster ST
Suspension Seatpost
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.
Better Than Ever
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.
Accessibility
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.
Parallel Linkage Design
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.
Additional Information
Product Specifications
0mm (unweighted)
Forged aluminum
Single bolt fastening and angle adjustment design
Threaded, serviceable, hard anodized aluminum axles flanged PTFE bushings
Medium firm elastomer pre-installed from the factory. Soft and Firm elastomers included. Extra Soft and Extra Firm elastomers sold separately
50mm / 1.97in
27.2 – 345mm. 30.9 + 31.6 – 375mm
580 grams (31.6)
330lbs / 150kg
Minimum – 100mm / Maximum – 274
27.2, 30.9, 31.6 (additional diameters available with seatpost adapter)
Technical Documents
- Thudbuster Short Travel instructions and weight range chart: English, German, French
- Tool-Free Elastomer Change
- Thudbuster Old (Gen3) vs New (Gen4) Comparison