DJC Bike Suspension Seatpost Shock Absorber Damper Post 27.2 30.9 31.6 mm, Lightweight Aluminum Body

No real instructions, but the process is pretty straightforward. The bottom line, this item works flawlessly. Make sure you know your seat post diameter when you order and that's the key. Adjustment of the cushioning is trial and error, but I just happened to get it right the first time. This is not a $200 item so the setup process is probably not on par with those. I weigh approx. 160 lbs and it's smoothed out my rides probably tenfold. No more jarring rides as the seatpost absorbs well. One of the best purchases I've made this year.

This seat post is great, especially for the money and installs in literally minutes. You can set the tension on how soft or stiff you want it to be on the bottom of the seat post with an allin key and really works great obsorbing shock. It's a must have on any bike.

This is a nice suspension post for a reasonable price. I got the gold and it looks pretty cool on my bike. I got to say a Suntour post is much better but more expensive also. the problem I had was my thick seat made it too tall for me so I though I would give this a try. This suspension bike tube work great with my thick seat and I can adjust it accordingly to fit my height. It has great cushion for this nasty bumps and you can make it firm or soft however you choose. So it a great option for a 3rd of the price. The only real problem I have with it is the adjustment for raising and lowering the front and back of the seat is kinda lacking a bit. It could use a couple more slots to be able to adjust it a little more. Thats pretty much the limitations of it for myself. If you need some cushioning for your bike and you’re on a budget this post is definitely for you. A good option at a reasonable price. Thanks Don

I am retired. My body is not as flexible as when I was younger, and I can't take a lot of bumping and jolting like it used to. But I love to ride my bike, which means that bumps and jolts are part of the experience. A friend recommended this seat post, and I am so glad he did. It really cushions the ride and makes it far more comfortable. I have shock struts on the front wheel but the rear of the bike has no shock absortion, so you feel every crack on the sidewalk, and every little pothole on the road. This really smooths them out! The seat post was easy to install. You remove the old seat from the old post, and then slide the new post, with the seat, into the down tube. It took all of 5 minutes. It fit my down tube perfectly, but it is good to know what diameter post you need, so you order the correct one.

First, I was a little skeptical I was kind of in the negative side of buying it so I said to myself OK I’ll probably lose $30+ dollars when I grabbed the package I noticed it has some weight to it after I opened it I notice how well the Quality was so I immediately put it on the bike and went for a ride! First thing I noticed how smooth the ride became going through the same bumps. I go through every day when I go cycling, so I really thought that I was going to lose 30+ dollars of my hard-working money! But I was so wrong. This is an amazing product well engineered and the finish is amazing. I am very happy that I got this , riding my mountain bike now is smoother and more enjoyable. I’m really glad I got this would definitely buy again. Zoom makes a great product hands down and the price is excellent!!!! I think the finish and quality goes way beyond the price so I gave it five stars

We have two high-quality bike's that we ride. The first was made by Dynamic (no longer selling retail, corporate only) that came with a suspension seatpost that makes the bike very comfortable to ride on the broken pavement that our city calls "streets." The second bike is a high-end Montague, with an 11-speed Nexus hub and hydraulic disc brakes. Unfortunately, it did not come with a suspension seatpost, so between the aluminum frame and 60lb-plus inflated tires it rides pretty rough here in town. Did some research and ordered one of DJC's suspension seatposts. The Montague's seatpost down-tube needed a 30mm post, and DJC was one of the few that offered a post in that size (by using a tube-shim). Very easy to swap out and install on the bike. The DJC is very handsomely made, using nice quality aluminum and steel materials, all finished very well. It offers the option to adjust how it reacts to bumps by way of a hex-wrench "nut" in the bottom of the post itself, which alters the tension on a compression cushion inside the post by way of a spring that's compressed by that hex-wrench nut. It's well-thought out, well-designed and well-executed. But we can't use it! Why? Because the DJC seatpost has a large "collar" at the top of the outer tube of the post that the upper part slides down into. This collar stops the seatpost tube from simply disappearing down into the frame tube, so it's a really important part of the seatpost. The collar stops the post by butting up against the frame tube at the "pinch bolt" of the bike frame (the part that "locks" the seatpost at the correct height for the rider). The pinch bolt collar is rather substantial in size itself (making it strong and reliable), so it's also on the tall side. This means that between the two collars (seatpost's tube collar and bike's seatpost frame pinch bolt collar) the seat cannot be lowered enough so that my wife can actually fit on the bike safely to ride it. Obviously, the original seatpost (non-suspension type) didn't have this limitation as it is simply a straight tube that will slide all the way down into the frame. This allows the seat to be lowered all the way down until it's sitting on the top frame tube. So why am I explaining all of this? I want to be fair to the DJC seatpost because it is a very well made and quality product for a great price, but it simply can't be adjusted low enough for my wife to use on her bike. This is a real shame, but it in no way should be considered a negative on the DJC component. We really wanted this to work, but unfortunately it isn't possible.

I'm 6'4 / 230lbs and do recreational riding for health and fitness. I purchased this DJC Suspension Seat Post for a new bike and found it to be every bit as good as other models I've owned that were three times the price. For my style of riding i.e., paved road and smooth dirt trails, it has performed as well as the others and I'm happy with it. Installation is easy if you understand how to turn a wrench. Make sure you measure your seat receiver tube correctly prior to ordering.

Bought this to replace the dropper seat post on my Ride1Up Trailrush. Improves the Ride a lot when riding over small bumps. 31.6 fits perfectly.