Item Package Dimensions L x W x H | 16.61 x 3.5 x 2.64 inches |
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Package Weight | 0.7 Kilograms |
Item Dimensions LxWxH | 19.69 x 19.69 x 11.02 inches |
Brand Name | REDSHIFT |
Warranty Description | 2 year manufacturer |
Model Name | Rs-50-p1 |
Color | black |
Material | Aluminum |
Suggested Users | Unisex - Adult |
Manufacturer | REDSHIFT |
Part Number | RS-50-02-MB |
Included Components | Seatpost |
Size | 27.2mm Dia x 280mm Length |
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REDSHIFT ShockStop Suspension Seatpost for Bicycles, Shock-Absorber Bike Seat Post for Road, Gravel, Hybrid, and E-Bikes
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).
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Product Description
35mm of travel
Just the right amount of travel to minimize jarring impacts and increase efficiency, without sacrificing power.
Tunable stiffness
Adjust the preload dial or swap out the springs to set the ride to your body weight and preferred riding style.
Lightweight and sturdy
Machined from 6061 T6 aluminum, it’s both lightweight and built to last.
Highly adjustable
Customizable position with 2 bolt seat post saddle clamp, and removable mudguard allows saddle bags to be fitted.
Product information
Technical Details
Additional Information
ASIN | B09FTGHH1S |
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Customer Reviews |
4.8 out of 5 stars |
Best Sellers Rank | #44,139 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #21 in Bike Seat Posts |
Date First Available | September 9, 2021 |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
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
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
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
Reviews with images
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Top reviews
Top reviews from the United States
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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.
Reviewed in the United States on October 21, 2023
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.
Needless to say, they were a great upgrade for me! Now I'm back to my usual 20-30miles rides without any of the lower back pain I had been getting! The difference has been noticeable both on the road and on gravel trails.
I should note that I use both the stem and seatpost in the "performance" configuration. This keeps the bike more rigid while still absorbing the nastier bumps (my 40mm tires handle the smaller stuff). As a result, I feel more in control as the handlebars and seat don't feel like they are about to eject me whenever I hit a large bump. Likewise, I don't feel like my handlebars are just flopping around with every bump either like the more comfort configuration does (to me, at least).
Overall, while they are a tad expensive, the stem/post upgrades have definitely been worth it for me! They are no substitute for a real suspension but, at fraction of the weight, they do great for those nasty city roads and occasional gravel trail.
(Review cross-posted on Stem since I bought, installed, and use them together!)
Also if you're wondering about bob/sag on the post, its present, but very small. I noticed when I first got the post but these days (3ish months after purchase) it doesn't bother me or feel like its draining watts from my ride whatsoever.
10/10 would reccomend if you're in a sutuation like me
0/10 would reccomend if you're trying to make your squishy bike more squishy.
Top reviews from other countries
+ Relativ geringes Gewicht
+ Tolle Federwirkung und einfach einstellbar
It was the best equipment I ever bought for my bike. The added comfort is amazing, it's probably as close as it gets to a rear suspension.
Not only that but averaging the last 2 rides before installing and the 2 first rides after, I got (objective numbers from Strava) an 8% gain in speed and also a 12% gain in relative effort. I'm not getting up on cobbled stone streets anymore.