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Thudbuster LT

Bolt-On Comfort

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.

For any questions, contact us through our Support Center


Thudbuster LT

Suspension Seatpost

The latest generation Thudbuster LT 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, 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.

Thubuster LT

90mm / 3.5in of travel

Thudbuster LT

Tool Free Elastomer Change

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.


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Technical Documents



Additional information


5mm (unweighted)


Forged aluminum

Seat Clamp

Single bolt fastening and angle adjustment design


Threaded, serviceable, hard anodized aluminum axles flanged PTFE bushings


Medium firm elastomer pre-installed from the factory. Extra Soft, Soft, Firm, and Extra Firm elastomers sold separately


90mm / 3.54in


27.2 – 390mm.  30.9 + 31.6 – 420mm


750 grams (31.6)

Max Rider Weight

250lbs / 113kg


Minimum – 146mm

Maximum – 290mm for 27.2, 320mm for 30.9 +31.6

Diameter (Direct Fit)

27.2, 30.9, 31.6

(additional diameters available with seatpost adapter)

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