Thudbuster ST Suspension Seatpost

Shock Absorbing Seatpost - $199.99

Bolt-On Comfort

Comfortable Suspension: 50mm of Travel (1.97in) for exceptional shock absorbing while cycling.
Reduce Riding Pain & Increase Comfort: Absorb bumps, dips, and drops. This will soften your ride and make biking more comfortable and enjoyable so you can ride longer.
High Quality & Durable: This suspension seatpost is completely redesigned from the previous model for increased durability and additional suspension travel.
No Shop Tools Needed: Tool-free elastomer change and a single-bolt seat clamp design for easy seatpost adjustments.
Works with Many Different Bike Types: This seatpost can be used on road bikes, gravel bikes, e-bikes (electric), commuter bikes, and adventure bikes for maximum comfort and performance.
Wide Range of Rider Weight: Weight limit of riders up to 150kg/330lbs.
Patented Parallel-Linkage Technology: 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.
Tuning Customization: Tunable to match your weight and riding preference with a range of elastomer spring rates available.

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.

Categories Thudbuster ST, Seatposts Tags Thudbuster ST, grouped product

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
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Additional information

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 (additional diameters available with seatpost adapter)