FitDesk Universal Saddle Extender for FDX 2.0 & 3.0 - Adjustable Bike Seat Post Riser Adapter, Increases Saddle Height by 3.5 Inches, Steel Post Extension, Exercise Bicycle Seat Adapter

Worked on my Sunny Health indoor bike.Bought my(just like new), indoor bike off my buddy for $75 bucks about a year ago. Had been collecting dust in the garage till I decided to re-kick start my cardio recently. The stock seat my bike came with was uncomfortable and not designed for Spin type exercises, which I like. Didn't want to splurge on an indoor Spin Bike just yet, so I decided to buy this adaptor which fit my Sunny Health Bike perfectly. Yes, flat and lock washers included too. No issues. Took 15 minutes. 1(2 works best) small crescent wrench(s)(to remove the old seat and to tighten bike seat collar), Hex Key/Allen wrench(don't recall the size I used. But a cheap set from the 99 cent store would work).Looks and feels sturdy. Did raise the seat level up a bit but was able to adjust to a lower setting on the seat post. Great price and easy to assemble. No regrets. Hope this helps.

Based on measurements given by other posters, I decided to try this for my Schwinn AD2 Airdyne exercise bike. I'm happy to report that it works quite well. I had trouble getting the bolts into the nuts with both washers on so I eliminated the flat ones and used only the locking washers. The adapter is firmly attached but will probably need and occasional tightening. I wasn't able to push the seat all the way down the post. If I decide to keep the saddle I'm testing, then I will make a greater effort to push the seat down further. The seat had its own post connector which is identical in size to the one sent with this adapter. Figuring in shipping for each, this item came out less than 37% of the price of the other adapter.

Update: I had to reorder the adapter, hoping the whole product was in the box this time... and it WAS!! Thankfully. Got home, installed in just a few minutes. Works perfectly on my European stationary bike. Giving it a four because I received only partial product the first round and still waiting on refund.Before:Unable to install, as I only received the bike clamp. I ordered the all black saddle adapter. The product box arrived with a photo of an aluminum pole with a black base, w/ black clamp. Inside box, that was taped closed, was only the clamp. I had this shipped to an APO, took about 2 weeks to get here, I am a little discouraged.

It fits the base with no issues. Is a little too tall for me.

Doesn't work with FitDesk Standing Desk Bike, model 4020.

This is a excellent part to convert your Exercycle seat to use a cycle seat and ad height and adjustability, strong part and easy to install well done.

I took a chance because of the triangular mounting holes. I wrongly concluded that this would fit my Life Fitness Platinum Club Series upright bicycle. It does not. It would have been nice if the product description would have included the measurements and locations of the mounting holes. It did not.I will be returning this to Amazon. and finding a fabricator locally to custom make one for me.Too bad, I had high hopes.

Pictures make it seem like the height is adjustable but you have to find someone who cuts metal in order to get it cut and home depot/lowes all the common places you go for wood do NOT cut metal, at least not in my area. Called over 15 places before i found a small locally owned place who said they would cut it for me but they dont normally cut metal they dont personally sell.