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Max Comfort

Thudbuster LT Suspension Seatpost

2 reviews|7 answered questions

The Ultimate Suspension Seatpost - $199.99



The Thudbuster G4 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 and additional suspension travel, as well as ease of use through tool-free elastomer change and a single-bolt seat clamp design.

  • Maximum suspension: 90mm of travel (3.54in) for maximum shock absorption while cycling.
  • Reduce riding pain & increase comfort: Absorb bumps, dips, and drops. Soften your ride and make biking more comfortable and enjoyable so you can ride longer.
  • High quality & durable: 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.

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.

ebike ready logo

Additional information

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)

2 reviews for Thudbuster LT Suspension Seatpost

4.0
Based on 2 reviews
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1-2 of 2 reviews
  1. [this was written on Jan. 22, ’24] I’m a road rider, gravel rider, mtn rider, fatbiker, … and have been for a number of decades now. This is to say, I am beginning to appreciate any additional comfort based items (not sheepskin seat covers, but truly performance and functionality melded together into great durable products). The Thudbuster LT is one such item (i.e., the G4 version, the latest version). My household has 10 bikes. There are now 6 Cane Creek posts on those bikes:
    gravel bikes: 2 x eesilk+ (carbon)
    back-up road / light gravel: 1 x eesilk
    mtn (hardtail): 1 x Thudbuster LT (G4)
    fatbikes: 2 x Thudbuster LT (G4)

    The single post I wish had more ‘squishy-comfort’ would be the road bike’s eesilk (so I just ordered a softer rubber bumper). A suggestion for a road rider looking for some additional comfort would be the eesilk+ (gravel) post as it delivers in that category.

    The other bikes are now better bikes because of these posts. The more squish, the better (it seems). My fatbikes are the latest to be adorned with such squishy goodness. I did go to softer bumpers than is recommended, that may just be me but I read it’s very common. My fatbiking is only done in the winter in Ontario (Canada) when the temperatures are well below freezing (i.e., -10C, approx. 14F). While it’s true that running 5 inch tires with 5 psi provides significant ‘squish’, … that addition of the Thudbuster LT is everything to make the ride more comfortable and non-punishing (except in your muscles, depending on your effort).

    These posts do not look ‘stupid’, they look great. They are also easy enough to swap in different bumpers is so desired. I’m also running the neoprene overboot for the Thudbuster LTs I’m running. They may or may not be worthwhile but I’m willing to buy and install the overboots to protect my equipment. The overboots also have a big strip of reflective tape on the back and that will certainly keep your friends from losing you in the forest in the dark winter while you’re out fatbiking in the late evening.

    One suggestion I have though is for sizing. Given the transferability of the post to other bikes I suggest buying the 27.2mm size and using a shim for larger seat-tubes. This allows the post to be swapped out when it’s time to sell the 31.6mm seat-tubed fatbike (or what-have-you). The reason for this is to allow you to keep the post and use it on different bikes in your stable. I’m currently running two 27.2mm Thudbuster LT seatposts with shims and both are as ‘good / sturdy / noise-free’ as the others. Shims are cheap, the LT itself is not.
    Cheers.

    (3) (0)
  2. I just installed this and rode it a little so far.
    Unlike many reviewers online, I had no problems with the installation. I believe their issues are due to user error. Seems to be a great design.
    But I think it is a bad marketing decision by Cane Creek to insist on shipping these with no choice for elastomer.
    It is not just rider weight that factors in here, but maybe more importantly the type of riding.
    E-bikers hitting potholes is a very different issue from a mountain biker on real mountain bike trails, even if they weigh the same.
    Forcing me to go through the swap procedure, expense, and hassle, followed by never having a need for my Medium elastomer, puts a needlessly bad end to the purchase and install experience for me.

    (15) (1)
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Q & A

I want to mount a thudbuster on my dutch-style bakfiets, but it has a very relaxed seat tube angle around 60 degrees. Is there a spec for how far forward the seat can be tipped, and should i expect the shock to act any differently at this angle? E.g. should i pick a stiffer elastomer? Anton asked on May 27, 2024

Hello, our Thudbusters were not designed to be used with very relaxed seat tubes, however, they will work. We would recommend using a stiffer elastomer.

Andy Bennett answered on May 28, 2024 store manager
(0) (0)
How does the elastomer fare in the cold? I live in northern MN, and would like to use this on my fatbike year-round, even in subzero conditions. Is that possible? Andrew asked on May 12, 2024

Hello, thanks for reaching out, it is possible to use our Thudbuster in these temperatures, however, the elastomer will stiffen up significantly in these temperatures.

Andy Bennett answered on May 13, 2024 store manager
(0) (0)
Do you offer parts to allow seats with oval rails to be mounted on a Thudbuster LT? DaveH asked on March 23, 2024

Hello, we do not offer a different saddle clamp kit for oval rails, sorry.

Andy Bennett answered on March 25, 2024 store manager
(0) (1)
Are your seat suitable for cargo bikes give that cargo bikes often get lift from the seat? Nigel asked on February 20, 2024

Hello, our Thudbuster seat post can be used on cargo bikes that offer a 27.2, 30.9 and 31.6mm seat tube.

Andy Bennett answered on February 20, 2024 store manager
(0) (0)
Why don't you allow customers to order the correct elastomer that they need when they order their Thudbuster oe eeSilk, rather than having it be an additional purchase for those who aren't in the "medium" weight category? Kathy Benton asked on December 15, 2023
(3) (0)

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Related Reviews

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4.6
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A more civilized ride to our Sheridan Nursery her in Toronto !

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Image #1 from Victor J Liss JrImage #2 from Victor J Liss Jr
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So far so good, only wish I discovered Thudbuster 3600 miles ago! An urban cyclist, Seattle’s poorly maintained streets require this “spine-saver!”

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5 months ago
Jeff Psiuk
Jeff Psiuk
Reviewer
5/5

[this was written on Jan. 22, '24] I'm a road rider, gravel rider, mtn rider, fatbiker, ... and have been for a number of decades now. This is to say, I am beginning to appreciate any additional comfort based items (not sheepskin seat covers, but truly performance and functionality melded together into great durable products). The Thudbuster LT is one such item (i.e., the G4 version, the latest version). My household has 10 bikes. There are now 6 Cane Creek posts on those bikes:
gravel bikes: 2 x eesilk+ (carbon)
back-up road / light gravel: 1 x eesilk
mtn (hardtail): 1 x Thudbuster LT (G4)
fatbikes: 2 x Thudbuster LT (G4)

The single post I wish had more 'squishy-comfort' would be the road bike's eesilk (so I just ordered a softer rubber bumper). A suggestion for a road rider looking for some additional comfort would be the eesilk+ (gravel) post as it delivers in that category.

The other bikes are now better bikes because of these posts. The more squish, the better (it seems). My fatbikes are the latest to be adorned with such squishy goodness. I did go to softer bumpers than is recommended, that may just be me but I read it's very common. My fatbiking is only done in the winter in Ontario (Canada) when the temperatures are well below freezing (i.e., -10C, approx. 14F). While it's true that running 5 inch tires with 5 psi provides significant 'squish', ... that addition of the Thudbuster LT is everything to make the ride more comfortable and non-punishing (except in your muscles, depending on your effort).

These posts do not look 'stupid', they look great. They are also easy enough to swap in different bumpers is so desired. I'm also running the neoprene overboot for the Thudbuster LTs I'm running. They may or may not be worthwhile but I'm willing to buy and install the overboots to protect my equipment. The overboots also have a big strip of reflective tape on the back and that will certainly keep your friends from losing you in the forest in the dark winter while you're out fatbiking in the late evening.

One suggestion I have though is for sizing. Given the transferability of the post to other bikes I suggest buying the 27.2mm size and using a shim for larger seat-tubes. This allows the post to be swapped out when it's time to sell the 31.6mm seat-tubed fatbike (or what-have-you). The reason for this is to allow you to keep the post and use it on different bikes in your stable. I'm currently running two 27.2mm Thudbuster LT seatposts with shims and both are as 'good / sturdy / noise-free' as the others. Shims are cheap, the LT itself is not.
Cheers.

6 months ago

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