SEATPOST OR8 P-FIT UL SUSP 27.2 350 BK
I do not write reviews about bike kit, very often. But this seat post deserves a review from a long-time cyclist who knows what he's doing and talking about. Certainly, for $45.00, this seat post is WELL worth the cost. If you follow the instructions carefully, and install it correctly, then you will appreciate what it offers. I ride very stiff, buzzy aluminum road bikes that are fitted with light, stiff wheels. The combination of this seat post with a Redshift suspension stem smooths out the road buzz and the sharp bumps with NO LOSS of control. I installed my seat post at the "softest" setting. I weight 180 pounds. I have yet to adjust it from that setting. It is lovely. I ride almost every day on bike paths that are littered with tree root bumps, some of which are quite abrupt. With this seat post, I can ride for 30+ miles without discomfort. I suspect that the low ratings for this product are from raters who do not know what they are doing and/or who do not ride much, which makes any saddle situation difficult and potentially painful. By comparison, this seat post will provide a dramatic improvement over a static seat post in terms of comfort. However, my road bike weighs 20 lbs. If you are concerned by the weight of this seat post, then you may think you are better off with carbon and saving 500g. I prefer the efficiency of balanced comfort and speed.
I have been building bicycles for over 20 years. Every time I see something nifty, I do not mind spending the money to check it out. This item was a waste of my money. Brand new, the plunger had almost No-Movement. It was not frozen. It has too much resistance from the internal components. The main culprit is the internal seat guide. With grease on the internal guide, the seat had 350 pounds of resistance, and it would only move about 1/4 of an inch...
First off it arrived defective, when attempting to move the preload adjuster with a strong allen wrench it would not budge from the Min position it was in no matter how much force was applied.
Like some of the other reviewers, I would tend to agree travel on this suspension seatpost is not 45mm. I currently weigh about 248 lbs and at least half the travel is lost just sitting on the seatpost. However, I am using this seatpost on a Dahon Mu P8 which is a very stiff ride, and I've got a Schwinn comfort seat I'm using with it and the combination gives a very much improved suspension ride. My goal is to get down to 200 lbs. and as I lose weight I will eventually arrive a good copacetic combo of suspension seatpost travel and rider weight that should give an ideal ride. I thought about returning this and trying other similar products, but I already have 3 Origin8 regular seatposts on my MTBs and have been very happy with Origin8 products, so I will keep losing weight and stick with this seatpost.
I'm 200 lbs and these work with minimum pre-load. I ordered two to replace suspension posts on an old road bike and ATB bike. The tube did not come close to fitting inside the down tube on the old road bike frame. I was able to use maximum force and grease to get it to fit inside the down tube on the ATB bike. I installed the 2nd unit on a relatively new beach cruiser bike and it fit easily. The seat mounting system is complex with too many loose parts, but works when you finally get it together. If you are not mechanical and good with fixing things, advise you get a professional to install the unit.