Cane Creek Thudbuster Suspension Seatpost - Long Travel - 30.9 - 420mm Gen 4

Thudbuster is a shock-absorbing comfort seatpost that smooths out bumps to reduce back pain when riding. With the ability to customize the amount of cushion that's right for you, Thudbuster will allow you to ride more and feel better while doing it. Less impact, less pain, more riding.

Ideal for comfort bikes, cruisers, commuters, and e-bikes.

Available in two different models:

Choose Thudbuster LT for max cushioning and comfort.
Choose Thudbuster ST for a more compact design that's more accommodating for riders with very low seat heights or higher weight requirements (suitable for riders up to 330 lbs / 150 kg).

The Original

30 years of Parallel Linkage Technology

Originally patented in 1995
Allows for bump-absorption without changing the relative distance from seat to cranks
Preserves a natural, easy pedaling motion
No unwanted up/down bouncing
Keeps seat level throughout movement

Which One is Right for Me?

Thudbuster LT offers the most cushion of any seatpost on the market. With over 3 inches of cushion, it's for riders looking for max comfort.

Thudbuster ST has a shorter travel design that still offers a high level of adjustable cushioning, but in a package that can suit more riders. Thanks to the shorter linkage height, it's usually the best choice for riders with very low seat heights or higher weight requirements (suitable for riders up to 330lbs/150kg).

Setback
5mm (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. Extra Soft, Soft, Firm, and Extra Firm elastomers sold separately

Travel
90mm / 3.54in

Length
27.2 - 390mm. 30.9 + 31.6 - 420mm

Weight
750 grams (31.6)

Max Rider Weight
250lbs / 113kg

Extension
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)

Seat Rail Compatibility
Compatible with round, alloy seat rails only. Not compatible with oval, carbon rails.