REVIEWS

HEAR WHAT OTHERS HAVE TO SAY

3.9
Rated 3.9 out of 5 stars
32 Reviews
3.9
Rated 3.9 out of 5 stars
Based on 32 reviews
Total 5 star reviews: 19 Total 4 star reviews: 4 Total 3 star reviews: 1 Total 2 star reviews: 2 Total 1 star reviews: 6
72%would recommend this product
32 reviews
  • AT
    Aaron T.
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 31.6mm - SP6A316
    I do not recommend this product
    Rated 1 out of 5 stars
    1 week ago
    Thudbuster ST Suspension Seatpost - 31.6 - SP6A316

    Read above just not worth the money

  • SD
    Stephen D.
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 27.2mm - SP6A272
    I recommend this product
    Rated 5 out of 5 stars
    3 months ago
    Thudbuster ST Suspension Seatpost - 27.2 - SP6A272

    I can ride rougher roads longer with less fatigue and more beaming joy. 🤩

  • KS
    Kim S.
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 27.2mm - SP6A272
    I recommend this product
    Rated 5 out of 5 stars
    5 months ago
    Thudbuster ST Suspension Seatpost - 27.2 - SP6A272

    Should have bought them 10 years ago! Absorbs 50% of the bumps.

  • M
    Matthew
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 30.9mm - SP6A309
    I recommend this product
    Rated 5 out of 5 stars
    6 months ago
    Thudbuster ST Suspension Seatpost - 30.9 - SP6A309

    Went on a 33 mile ride to test the Thudbuster for the first time. At first, I didn't notice anything and just thought about it from time to time as the ride went on. Then it hit me....I wasn't noticing anything, because it was working. Such a smooth and bump free experience. Worth every penny. I added this to my Specialized Turbo Vado 3.0 IGH.

  • C
    Clifton
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 27.2mm - SP6A272
    I recommend this product
    Rated 5 out of 5 stars
    7 months ago
    Thudbuster ST Suspension Seatpost - 27.2 - SP6A272

    I have a Trek Dual Sport 4, no rear suspension. I enjoy riding easy/intermediate trail, gravel, and pavement. A lower back injury restricted me to only pavement, so I was considering replacing it with a full suspension mtn bike when a friend suggested a Thudbuster (funny mtn bike salesman didn’t mention as option). Gave it a try. Shazam, back riding trails with a smile.

Reviews LoadedReviews Added

Thudbuster ST

Sale price$199.99

Shock Absorbing Seatpost

Thudbuster ST

Shock Absorbing Seatpost

Sale price$199.99
3.9
Rated 3.9 out of 5 stars
32 Reviews

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.

Size: Thudbuster ST - 27.2mm - SP6A272

Size

- Sale price$199.99

In-stock items typically ship in 2-3 days

30-Day returns

Free shipping on orders $99+

Find a dealer near you

3.9
Rated 3.9 out of 5 stars
Based on 32 reviews
Total 5 star reviews: 19 Total 4 star reviews: 4 Total 3 star reviews: 1 Total 2 star reviews: 2 Total 1 star reviews: 6
72%would recommend this product
32 reviews
  • AT
    Aaron T.
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 31.6mm - SP6A316
    I do not recommend this product
    Rated 1 out of 5 stars
    1 week ago
    Thudbuster ST Suspension Seatpost - 31.6 - SP6A316

    Read above just not worth the money

  • SD
    Stephen D.
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 27.2mm - SP6A272
    I recommend this product
    Rated 5 out of 5 stars
    3 months ago
    Thudbuster ST Suspension Seatpost - 27.2 - SP6A272

    I can ride rougher roads longer with less fatigue and more beaming joy. 🤩

  • KS
    Kim S.
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 27.2mm - SP6A272
    I recommend this product
    Rated 5 out of 5 stars
    5 months ago
    Thudbuster ST Suspension Seatpost - 27.2 - SP6A272

    Should have bought them 10 years ago! Absorbs 50% of the bumps.

  • M
    Matthew
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 30.9mm - SP6A309
    I recommend this product
    Rated 5 out of 5 stars
    6 months ago
    Thudbuster ST Suspension Seatpost - 30.9 - SP6A309

    Went on a 33 mile ride to test the Thudbuster for the first time. At first, I didn't notice anything and just thought about it from time to time as the ride went on. Then it hit me....I wasn't noticing anything, because it was working. Such a smooth and bump free experience. Worth every penny. I added this to my Specialized Turbo Vado 3.0 IGH.

  • C
    Clifton
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 27.2mm - SP6A272
    I recommend this product
    Rated 5 out of 5 stars
    7 months ago
    Thudbuster ST Suspension Seatpost - 27.2 - SP6A272

    I have a Trek Dual Sport 4, no rear suspension. I enjoy riding easy/intermediate trail, gravel, and pavement. A lower back injury restricted me to only pavement, so I was considering replacing it with a full suspension mtn bike when a friend suggested a Thudbuster (funny mtn bike salesman didn’t mention as option). Gave it a try. Shazam, back riding trails with a smile.

Reviews LoadedReviews Added

REVIEWS

HEAR WHAT OTHERS HAVE TO SAY

3.9
Rated 3.9 out of 5 stars
Based on 32 reviews
Total 5 star reviews: 19 Total 4 star reviews: 4 Total 3 star reviews: 1 Total 2 star reviews: 2 Total 1 star reviews: 6
72%would recommend this product
32 reviews
  • AT
    Aaron T.
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 31.6mm - SP6A316
    I do not recommend this product
    Rated 1 out of 5 stars
    1 week ago
    Thudbuster ST Suspension Seatpost - 31.6 - SP6A316

    Read above just not worth the money

  • SD
    Stephen D.
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 27.2mm - SP6A272
    I recommend this product
    Rated 5 out of 5 stars
    3 months ago
    Thudbuster ST Suspension Seatpost - 27.2 - SP6A272

    I can ride rougher roads longer with less fatigue and more beaming joy. 🤩

  • KS
    Kim S.
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 27.2mm - SP6A272
    I recommend this product
    Rated 5 out of 5 stars
    5 months ago
    Thudbuster ST Suspension Seatpost - 27.2 - SP6A272

    Should have bought them 10 years ago! Absorbs 50% of the bumps.

  • M
    Matthew
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 30.9mm - SP6A309
    I recommend this product
    Rated 5 out of 5 stars
    6 months ago
    Thudbuster ST Suspension Seatpost - 30.9 - SP6A309

    Went on a 33 mile ride to test the Thudbuster for the first time. At first, I didn't notice anything and just thought about it from time to time as the ride went on. Then it hit me....I wasn't noticing anything, because it was working. Such a smooth and bump free experience. Worth every penny. I added this to my Specialized Turbo Vado 3.0 IGH.

  • C
    Clifton
    Thudbuster ST
    Reviewing
    Thudbuster ST Thudbuster ST - 27.2mm - SP6A272
    I recommend this product
    Rated 5 out of 5 stars
    7 months ago
    Thudbuster ST Suspension Seatpost - 27.2 - SP6A272

    I have a Trek Dual Sport 4, no rear suspension. I enjoy riding easy/intermediate trail, gravel, and pavement. A lower back injury restricted me to only pavement, so I was considering replacing it with a full suspension mtn bike when a friend suggested a Thudbuster (funny mtn bike salesman didn’t mention as option). Gave it a try. Shazam, back riding trails with a smile.

Reviews LoadedReviews Added

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

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)

Technical Documents