REDSHIFT ShockStop Endurance Suspension Seatpost for Bike

This is a review of the Redshift ShockStop Stem and Seatpost. I purchased and installed both products, and they were complete game changers for my ride. I bought the 27.2 x 350 mm Seatpost, and the 90 mm 6 degree stem. I installed them on my Trek Domane AL5 2025. The Seatpost was a bit longer than stock, but my fit is a fairly high seat, so there were no issues. It easily met the minimum insertion requirements. The stem was +/- 6 degree, my stock stem was +/- 7 degree so it was reasonably close. I installed it as +6 and it didn't change my ride geometry enough to be an issue. For the seatpost, a quick read of the instructions made it easy to understand how to setup the preload. I set the preload slightly soft for my weight, greased the stem, and installed it on my bike. I was careful to follow torque recommendations for tightening the stem in place. Installing the seat on the seatpost was a little bit of a challenge. the Redshift seatpost is a 2 screw mount, they are accessible, but not easily. It is a balance act to tighten both to set the correct seat angle, but with some loosening of one screw and tightening of the other, it can be accomplished. I would say that installing the seatpost took about 45 minutes to get it just how I wanted. I expect changing the preload to take me about 5 minutes, and there are clear markings in cm to aid me in installing the seat to the exact height that it was previously installed at. For the stem, a quick read of the instructions identified that I was at the very bottom of my weight group for what elastomers to install. The next combination down was a significant change. The instructions stated that I could go onto Redshift's website and view a complete list of combinations. This was slightly challenging. On the page for the stem there is no information about elastomer selection. On the support page I did find links to a video and pdf for elastomer selection. I elected to view the pdf, and printed it. Sure enough there were 2 combinations between the 2 options listed on the instructions. I selected the stiffer of the two (just below the one recommended for my wight). I mounted the stem on my bike, and mounted my handlebars. Again make note of the torque recommendations, Redshift has had them engraved on the stem, so they are hard to miss. This also took about 45 minutes. To change the elastomers, I will have to unmount my handlebars and remove a retaining plate from my stem. I do not look forward to my expected 25 minutes or so just to change elastomers. I took my bike out for a nice long ride, 20 miles, 15 MPH, and asphalt. The only downside to this trail, and the reason I bought the Redshift parts, is that there are several points where tree roots have pushed up the asphalt and created some very jarring speedbumps. Without the Redshift products, these were uncomfortable at best, and sometimes made me feel like I was on the edge of controlling my handle bars. This ride, with both installed, the seat was easy to manage, and did not hit hard. With the stem installed, I could still feel every twig and root, but it was very much dampened. You do not feel disconnected from the road, but you are very much more in control. By the end of the ride, I felt less fatigue in my arms and less soreness from the seat. While researching elastomers, I read that there is a break-in period, I would say that by the end of my 20 mile ride, the stem did offer better bump dampening than it did at the start, but I do feel that the elastomer selection I made from the support pdf was spot on. Pros: They do exactly as they advertise Clear instructions (with the exception of elastomer selection) Relatively simple installation More control Less shock Well manufactured Clean looking Cons: Neither of these items are what I would call cheap 2 bolt connection for the seat is fiddly, but manageable Elastomers, the best list is online only and not as easily found as I would have thought The listing for the stem is clear that it is a 6 degree stem, but it is hard to identify if it will install as +, - or both They only come in black, not an issue for me as I was replacing black parts with black parts, but some might like other colors Summary: If you have the money, and want a smoother ride, these are quality parts to compliment and soften your ride.

I love it more than expected. It is like having a full suspension bike. Make sure to remove and measure your old seat post to order the right size. I bought it for a medium ebike, but the post I ordered was a little too short. However, I kept it because the size was right for my large Mt Bike. Then I bought a second one for my ebike. It comes with 2 springs and it has a load adjustment to provide the perfect feel. The second spring fits inside the first spring to provide less bounce or for heavier riders. The second spring requires installation, if you want to use it. I am 200 lbs and I tried it with one and two springs. I liked it better with one spring. The bottom of the post has the load adjustment. You turn the bottom cap one way or the other to adjust the load. It goes from 1 to 5 mm. I kept it in the middle and am very happy with how it rides. It was 20% off when I bought it. It was worth waiting for a sale because they are expensive for a seat post. Especially when you get more than one.

Just finished installing and test driving the REDSHIFT ShockStop Endurance Suspension Seatpost for my e-bike, and the difference is night and day. I inserted the inner spring because I weigh about 236 pounds and the preload is set to three and it's perfect. I'm also using the Cloud Nine saddle and the ride is just unbelievably smooth while pedaling. The price is a little steep, but I'm pretty sure this is the best money can buy. Highly recommend.

I will add myself to the list of those "I can't believe I waited so long" to install one of these. As I have gotten older, I have noticed all the bumps in the road more and more. Recently, after doing my research, I installed a Kinekt stem and afterward, realized what I really wanted for a more comfortable ride was a suspension type seatpost. Going back to the books, I ultimately decided on this Redshift Seatpost. If I have a complaint about the Kinekt stem, it is that I wish it had an even stiffer spring than the hardest one they ship with it. I worried I would have the same issue with the Kinekt seatpost. Add to that that the Redshift appears to have more adjustability, the option of adding the second spring and an overall sleeker design, and it seemed right. It was - for me. I played with the settings a bit (I am 6'1" and about 240), and immediately added the second spring. The preload - while slightly more "fiddly" than the Kinekt (you have to remove the seatpost to adjust it), once "dialed in" is great. I actually have mine a little softer than what a hard rider might want, but it seems to be just the right cushion for all the bumps I encounter - I ride the Pinellas County trail mostly, as well as the streets necessary to get me there. My bike is a Giant Anyroad aluminum road bike with a composite fork - so already a more comfortable ride profile, but this adds enough so that I again am anxious to get out and ride. Pay attention to your seatpost diameter. My Anyroad has a larger diameter, so I also had to buy a shim (Redshift says it must be at least 4" long). This is the most expensive add-on I have on my bike. Is it worth it? In a word, ABSOLUTELY

As described, game changer for bike rides. Once adjusted, the ride is more enjoyable and you get more out of it too.

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.

Damn this is comfy ! Heavy, but comfy. Easy to set-up ( after you read the instructions)

Unbelievably great! I am almost 68...and riding my fabulous ebikes ( Freesky Alaska and Wild Cat are mine... . Wife has a Freesky Rocky) bikes are my daily exercise . For daily use my Alaska (big one...dual batteries) does laps around our 3 acres nightly, usuallyat over14 mph. I have extra lighting so I miss most of the ruts/potholes in the yard...but I always manage to find them. All 3 of our bikes have full...front and rear....suspension but a 6" hole 4" deep at 12mph plus still transmitts that jolt into your back even with a great older age gentleman wide seat. I added this yesterday..... Unbelievable! It definitely catches what the rear shock doesn't catch and it's fluid smooth! I can’t describe the difference. It is fully tunable...so as I loose weight, adjustmen is super easy! VERY SATISFIED!!! Because my ebikes are 30.9mm tubes, be sure to get the correct shim....I purchased a 27.5 to 30.9. Excellent fit! I also replaced my lever quick release with one that is more secure...that is tightened via a hex screw. I am about to purchase a 2nd one for my Wild Cat....and I'm sure once my wife tries it...it will be a third purchase. FYI...Because of the larger tube and beefed up locking ring, I am not using the provided "magnetic fender". Get this...your back is worth every penny! I'm an engineer...and a pilot...and appreciate well engineered things...this gets a 10 out of 5 star rating!! Oh....it's also a little shorter than others available out there..90mm from max insertion to seat rail. Most of the others average over 100mm.

I enjoy every mile with it. Saves my back.

Recently I have found my lower back aching at the end of a ride. I normally do forest trails and fire roads so they are quite bumpy. Despite already having a suspension seatpost that came with my bike I could never seem to get it adjusted properly so I decided to look into a better one. I looked at all the different ones out there and reading reviews and settled on the Redshift ShockStop Endurance. The price did seem a lot especially compared to others but I prefer to pay for better quality so ordered one. Fitting it was easy including putting my existing seat on it. I took it out for a first ride and chose some particularly bumpy tracks. Well, I couldn’t believe the difference. Bumps were smoothed out but I didn’t feel it was floaty. The shock absorption is second to none. I initially set it to my weight according to the instructions but after a couple of rides and adjustment found I preferred it slightly stiffer and now it is perfect. I made the mistake of letting my wife try it and she was blown away by it. Of course, I had to order another for her. If there is one thing you get to improve your bike, this is it.

Excellent product & service.

This is my 3rd order from RedShift Seatpost Suspension. Did ride with the first purchase for more then 1500Km and still keep goin without any issue. You can read more review from internet but here are my personal views base on my own experience without bias. Advantage: 1) Enhance your riding experience. The suspension will soak all the small bumps and small vibration from your rear tyre. 2) You will clock in more mileage due to induce fatigue. 3) If you have any back pain issue and wanted to ride, this seatpost for you. 4) Zero maintenance. 5) Every single ride will make a big smile on your face. Disadvantage: 1) Weight penalty, add more weight to your bike, around 415g for 350mm & 380g for 280mm.(Specs taken from Redshift website) 2) Pedal bob effect reduced your power transfer. 3) For adjustment, you need to removed the seatpost. 4) Design only for circular seatpost and not for aero seatpost design. 3) Expensive for single component. Hope this will help you guys for the purchase.

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