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

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.

This post is awesome! I've tried more than a few others and this one is the best. Makes me more curious about their higher end model 🤔 but for now this one does the trick and it does it well. The fact that it doesn't change the distance between saddle and BB much if any is the most noticeable benefit to this design. This make it less of a distraction as it works. It just does its thing and my back appreciates it. Does it rob a miniscule amout of power transfer during a sprint, maybe. But my assumption is that if you're looking at this post you aren't that worried about such things. Check out Redshifts website measurements and recommendations and get the shortest post your frame can accept to save a bit of weight. I was able to go with the shortest of the offerings. Once again, Redshift gets the win!

I've been a mountain biker since I was a child and most of my life I never would have found a product like this necessary. To be honest I doubt most people would want or need something like this. It wasn't until I injured my lower back and now have a couple compressed discs to deal with that putting one of these on my rigid commuter/bikepacking bike started to make a lot of sense. I shopped around and looked at the thudbuster, but there was limited adjustability with their rubber inserts and I've read they wear out over time. 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 adjustability to fine tune a comfortable ride. It really helps take the edge off small bumps once you dial in the preload. Obviously this is not going to be good for rough trail riding- for that you're going to need to either have a suspension fork/frame or just stand up off the seat the old fashioned way to cut through the rough. But for dirt roads, or potholes or uneven transitions on my commute, it works fantastic to keep my back from flaring up which keeps me in the saddle more. 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.

I used to use a Thudbuster and loved it for 20 years. Then my mountain bike frame cracked and I moved to a full carbon gravel bike. Recently some cretin stole that bike so I bought an aluminum city bike. I used to own aluminum but forgot how unforgiving the material is until I took this one out on the streets of Tokyo and felt all the chatter and bumps through me. So I decided to invest in this product and I could not be happier! It was super easy to install, it already came preloaded perfectly for my weight and slid into the seat tube smoothly. The saddle bindings are unique and we’re not at all difficult to adjust, making getting the saddle angle just right, a snap. Suddenly I feel like I have rear suspension again! The road chatter is gone and the bumps and divots smooth right out. I look forward to many years of riding with this product. The team in the US was great, very helpful, responsive and a pleasure to work with. They answered all my questions and more so I am very happy with the service as well. Thank you Team Redshift Sports!

I enjoy every mile with it. Saves my back.

Es caro pero vale lo que cuesta.

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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