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REDSHIFT ShockStop Suspension Seatpost for Bicycles, Shock-Absorber Bike Seat Post for Road, Gravel, Hybrid, and E-Bikes

4.8 4.8 out of 5 stars 960 ratings

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Color black
Material Aluminum
Brand REDSHIFT
Bike Type Road Bike
Product Dimensions 1.07"W x 13.78"H

About this item

  • RIDE FARTHER, FASTER, AND MORE COMFORTABLY – The ShockStop bicycle suspension seatpost is the perfect upgrade to your road, gravel, bikepacking, all-road, hybrid and e-bike with standard sizes to fit any brand of bike. More comfort at the saddle means you’ll be able to ride longer, go faster, and stay in control even on the roughest terrain. Choose from 4 lengths (280, 350, 400, and 450mm) and 4 diameters (27.2, 30.4, 30.9, and 31.6mm) in order to get the best fit for your bike.
  • DAMPEN BUMPS AND VIBRATION BY UP TO 60%! – Say goodbye to your sore butt and pain from riding and say hello to increased control, more confidence, and a super smooth ride. The patent-pending ShockStop Suspension Seatpost for bicycles reduces the effects of bumps, shocks, and road buzz by up to 60%!
  • REDUCE FATIGUE AND INCREASE EFFICIENCY – Stop wasting energy suspending your body to absorb impacts and vibrations. This shock absorber bike seatpost allows you to stay in the saddle and keep pedaling even over the most extreme terrain. Consistent power output and reduced fatigue enables you to go further and faster on the bike you already own.
  • 35mm OF TUNABLE SUSPENSION TRAVEL – The ShockStop bike suspension seatpost has 35mm of tunable, ultra-responsive suspension travel. The optimized four-bar linkage ensures that your saddle angle remains constant through the full range of travel. Adjust the preload and swap in and out springs to find your perfect setup and match the seatpost to your preferred riding style.
  • EASY TO INSTALL AND MAINTENANCE FREE – The multiple diameter and length options allow this shock-absorbing seatpost to fit all modern bikes and installs in minutes (shims are available to fit additional sizes).

From the brand


Product Description

module 1
2.1

35mm of travel

Just the right amount of travel to minimize jarring impacts and increase efficiency, without sacrificing power.

2.2

Tunable stiffness

Adjust the preload dial or swap out the springs to set the ride to your body weight and preferred riding style.

2.3

Lightweight and sturdy

Machined from 6061 T6 aluminum, it’s both lightweight and built to last.

2.4

Highly adjustable

Customizable position with 2 bolt seat post saddle clamp, and removable mudguard allows saddle bags to be fitted.

module 3
module 4
banner 5

Product information

Technical Details

Additional Information

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Customer reviews

4.8 out of 5 stars
4.8 out of 5
960 global ratings

Customers say

Customers like the ease of installation, adjustability, smoothness, appearance and quality of the bicycle seatpost. For example, they mention it's easy to follow instructions, makes rides much smoother and that it'll do the job quite well. That said, some disagree on value.

AI-generated from the text of customer reviews

67 customers mention67 positive0 negative

Customers are satisfied with the quality of the bicycle seatpost. They say it does the job quite well, the construction and performance is worth it, and it makes their bike much better. Customers are also pleased with the suspension, saying it's very comfortable and worth the money.

"...rather a very definite and immediate sensation of comfort with no loss of control. I’m an old person with five fused vertebrae...." Read more

"...What I appreciate most is its smooth and precise action without feeling overly spongy or sloppy...." Read more

"The Redshift Suspension Seat Pole works better than advertised...." Read more

"...Very pleased with the suspension, very comfortable. Worth the money." Read more

39 customers mention39 positive0 negative

Customers like the smoothness of the bicycle seatpost. They say it smooths out the rough roads and makes long rides more bum friendly. They also mention that the shock doesn't catch and it's fluid smooth.

"...There is no sensation of too much compression but rather a very definite and immediate sensation of comfort with no loss of control...." Read more

"...There's no noticeable yo-yo effect when you're putting out maximum pedaling effort, and it effectively dampens post-bump rebounding...." Read more

"...much as my road bike however, with its use I have been able to increase my mileage and speed...." Read more

"...It definitely catches what the rear shock doesn't catch and it's fluid smooth! I can’t describe the difference...." Read more

36 customers mention36 positive0 negative

Customers like the comfort of the bicycle seatpost. For example, they say it increases comfort, takes pain out of riding bicycle, and makes rides less stressful for their bottoms, spines, and necks. Customers also mention that the seatpost is not plush, but rather more stable and less jarring. Overall, customers are happy with their purchase and recommend it to others.

"...of too much compression but rather a very definite and immediate sensation of comfort with no loss of control...." Read more

"...More importantly, with virtually no back pain afterwards. I highly recommend this item for any biking enthusiasts." Read more

"...Very pleased with the suspension, very comfortable. Worth the money." Read more

"...This seatpost makes a BIG difference in riding comfort...." Read more

23 customers mention23 positive0 negative

Customers find the bicycle seatpost excellent at eliminating impacts from bumps. They say it takes the bumps out of every ride, absorbs the bump, and saves their backside. Customers also say it's forgiving on butt blaster bumps, smooths out the bump and absorbs rear wheel jolts. This makes the bump hurt less and offsets the shock from road and trail imperfections.

"...you're putting out maximum pedaling effort, and it effectively dampens post-bump rebounding...." Read more

"...It really helps take the edge off small bumps once you dial in the preload...." Read more

"...Absorbs the bumps and saves your backside." Read more

"...In use, the post definitely reduces the ride shock I was getting before...." Read more

15 customers mention13 positive2 negative

Customers like the adjustability of the bicycle seatpost. They mention that it's relatively easy to adjust through a lot of weight classes, and has infinite adjustability. They also appreciate the simple preload adjustment on the bottom of the post, and the ability to adjust the spring tension or even add a second spring.

"...Adjusted to my weight, it works perfectly. Adjustment js easy and consistent because there is an engraved scale...." Read more

"...But Redshift got it just right! You can adjust and fine tune the suspension to your particular performance and stiffness preferences over a large..." Read more

"...Redshift says this post has infinite adjustability, and while I wouldn't necessarily call it 'infinite' I would say it has an adequate bandwidth of..." Read more

"...It is fully tunable...so as I loose weight, adjustmen is super easy!VERY SATISFIED!!!..." Read more

15 customers mention15 positive0 negative

Customers find the installation process of the bicycle seatpost to be easy. They mention that it has a solid construction, and the instructions are easy to follow. Customers also say that the product is worth the money and installs in minutes without any problems.

"Installation is easy. Redshift has an excellent video with common sense install instruction. Very pleased with the suspension, very comfortable...." Read more

"Perfect fit, easy to install just watch video. No noise." Read more

"...It was easy to install and the ride was super smooth! I live in the country and the roads can be rough...." Read more

"...It made the installation process much easier...." Read more

8 customers mention8 positive0 negative

Customers are satisfied with the appearance of the bicycle seatpost. They mention it's amazing in looks, well-designed, and outstanding for their E bike.

"Expensive - but really nice" Read more

"...adjustability, the option of adding the second spring and an overall sleeker design, and it seemed right. It was - for me...." Read more

"A really well-designed and manufactured suspension seatpost. Check out the YouTube articles on this product!..." Read more

"...What drew me to this suspension post specifically was first it’s cool look and then the function of how this design makes it superior to simple..." Read more

35 customers mention24 positive11 negative

Customers are mixed about the value of the bicycle seatpost. Some mention it's worth every penny, while others say it'll break the bank.

"...Very pleased with the suspension, very comfortable. Worth the money." Read more

"...Get this...your back is worth every penny!..." Read more

"...Overall, while they are a tad expensive, the stem/post upgrades have definitely been worth it for me!..." Read more

"Expensive - but really nice" Read more

Eats Up Bumps.
5 Stars
Eats Up Bumps.
Just got back from a 35 mile gravel ride and this seat post does some major work for you. Absorbs the bumps and saves your backside.
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Top reviews from the United States

Reviewed in the United States on June 18, 2023
Size: 27.2mm Dia x 280mm LengthVerified Purchase
One person found this helpful
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Reviewed in the United States on October 21, 2023
Size: 30.9mm Dia x 350mm LengthVerified Purchase
Customer image
5.0 out of 5 stars Expensive? You bet. Worth it? Absolutely!
Reviewed in the United States on October 21, 2023
After more than fifty years and over 250,000 miles on a bike, this is one of the top three transformative bicycle components I've ever tried. I installed it on my "adventure" e-bike, which has a bone-rattling all aluminum frame and weighs in at over 50lbs. Combine that with a slender individual who lacks natural padding, down there, and you get a situation that sounds like a Yahtzee game every time I hit a bump!

I've experimented with several suspension posts over the years, but they all fell short for various reasons. Some were too stiff, providing no discernible benefit. Others were so soft that a significant portion of your pedaling effort was wasted flexing the seatpost spring rather than propelling you forward. And all didn't offer the required range of adjustment or granularity needed to properly fine-tune the suspension to my needs.

But Redshift got it just right! You can adjust and fine tune the suspension to your particular performance and stiffness preferences over a large range. What I appreciate most is its smooth and precise action without feeling overly spongy or sloppy. It has never "bottoms out" or rebounds inappropriately after absorbing a large bump for me. There's no noticeable yo-yo effect when you're putting out maximum pedaling effort, and it effectively dampens post-bump rebounding. It's akin to driving a classic Citroen DS with Hydropneumatic suspension!

Make sure to follow the installation instructions, especially regarding the seat's fore and aft position and the seat height, as they WILL be different from your usual settings.

I intend to purchase four more of these for my other non e-bikes.
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2 people found this helpful
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Reviewed in the United States on August 31, 2023
Size: 27.2mm Dia x 350mm LengthVerified Purchase
2 people found this helpful
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Reviewed in the United States on December 4, 2023
Size: 30.9mm Dia x 350mm LengthVerified Purchase
2 people found this helpful
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Reviewed in the United States on October 23, 2023
Size: 27.2mm Dia x 350mm LengthVerified Purchase
3 people found this helpful
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Reviewed in the United States on October 7, 2022
Size: 27.2mm Dia x 280mm LengthVerified Purchase
9 people found this helpful
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Reviewed in the United States on December 4, 2023
Size: 27.2mm Dia x 280mm LengthVerified Purchase
One person found this helpful
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Top reviews from other countries

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christian
5.0 out of 5 stars Produit de grande qualité
Reviewed in Canada on May 15, 2022
Size: 27.2mm Dia x 350mm LengthVerified Purchase
One person found this helpful
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slind
5.0 out of 5 stars Perfekt für's Gravelbike
Reviewed in Germany on March 25, 2024
Size: 30.9mm Dia x 350mm LengthVerified Purchase
belgium spl
5.0 out of 5 stars Très bonne qualité, joue son role
Reviewed in Belgium on January 2, 2024
Size: 27.2mm Dia x 350mm LengthVerified Purchase
Client d'Amazon
5.0 out of 5 stars Super pour le gravel
Reviewed in France on November 5, 2023
Size: 31.6mm Dia x 350mm LengthVerified Purchase
Cliente Amazon
5.0 out of 5 stars Amazing quality & performance.
Reviewed in Spain on August 9, 2023
Size: 27.2mm Dia x 280mm LengthVerified Purchase
One person found this helpful
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