SarisIndoor Bike Trainer Stackable Climbing Riser Block – Adjustable 3-Level Design for Stable Cycling Training – Compatible with Rear Wheel-Mounted Trainers

My wife and I had the cheaper Sunlight block for her bike, and that one was fine but definitely on the cheaper side. She got bigger tires for her road bike, and the other block seemed to have a hard time keeping the tire in place. When we moved to our new apartment the block went MIA, so I decided to order this one. When the boxes arrived (I ordered two) we were definitely surprised - I didn't think they would be quite so big. But they really do a great job at giving us a stable ride when we're using our bikes on a trainer. Also, the fact that the two blocks can stack to create a more strenuous workout is really neat. They're a little pricey (to me, anyway), but if these were to get lost during our next move I would feel comfortable spending the money on them again. They're very well built, very stable, and make me feel very comfortable on my bike. I'm 5'10" and around 200lbs, and my wife is 5'5" and 130 - both of us feel very stable on our bikes, even when we're in higher gears and peddling quite fast. We clip in to our pedals as well, and where the other block made me feel terrified of tipping over at any moment, thankfully this one doesn't give me the same dread.

Just what I needed for my bike trainer in my garage. Books and other recommendations just didn’t do the job. May purchase an another to stack for uphill training. :)

The Saris riser is a perfect complement to any trainer. Some riser put most of the pressure on the front and back of the wheel where this unit provides ample support to prevent causing issues with creasing the tire or affecting tube inflation. It may take up a bit more space than the other units but it’s worth the space. A nice design of the unit is how you can stack multiple units, essentially crisscrossing them to create a hill climb effect. While standing up on the pedals and pushing hard, the unit keeps great stability to the front end. Finally, the price point is good for what you get.

I purchased this item to complete a CycleOps wind trainer setup I placed in the lower level of my home. When my bike is placed on the wind trainer, the front end is pointed down a little. The CycleOps stackable climbing block is a very convenient way to level a bike or set it at an incline.You get one block, which is probably fine for most people. If you just want to level your bike, one is all you need. The block has several different grooves in it that allows you to select different heights. I chose to use the one that places my bike at a very subtle incline. If you want a larger incline, you can purchase another block and place it on the first one—hence the “stackable” name in its title.The CycleOps stackable block is made of sturdy plastic. The bottom of the block just rests on the floor. If you are a very aggressive rider and are using this on a solid floor, you may want to place it on a rubberized pad or mat to keep it from moving. I do this, and it works great. If you have carpeting, you’re all set. Just buy this block and place it on your carpet.As others have pointed out, you can just as easily make something to place your front wheel on. A rolled up carpet, a stack of books, a pile of papers or magazines all will probably work well. I opted for the CycleOps stackable block to complete my CycleOps setup and to ensure consistent, alternate height setting.If you do purchase it, be aware that this block is a lot bigger than it appears in the picture. I was surprised at how large it was when I took it out of the box. It has to be somewhat large to accommodate various wheel sizes.If you don’t mind spending the money on an item like this, then I’d recommend it. If money is tight or you just don’t like the idea of buying something you can probably do without, then I’d recommend improvising and making your own riser.

The CycleOps block works exceptionally well as a lightweight, durable, and sturdy wheel support for spinning. I've been using this with my road bike for a year now, and it goes great with my TACX Cycleforce Basic trainer. There are multiple options to get your frame just where you want it, and it holds your wheel with no wobble, even when climbing out of the saddle. Spinning indoors is a great way to improve your pedal stroke, increase leg power, or do single-leg work safely. It also helps in working on body position. Get a quiet fan and an interesting training video, and spin away. I have not yet purchased a second block to take advantage of the stacking feature - one seems to accomplish all I need it for. Highly recommended low-tech tool with nothing to break or malfunction.

I was amazed by the size of this block. From the picture I would have though it was about 6 to 8 inches wide. Its not its about 12 inches wide and about 4 inches tall. I know that some people have had a hard time distinguishing which groove they were using to hold the tire steady. This is how I tell the difference between all three. I look at the yellow dot in the center and each groove has a different height from the yellow dot. Its pretty easy to see the difference from one to the other and just remember which one I used before. I am really glad I have this block and would highly recommend it. My front wheel does not move at all even when I stand up to peddle.

Lightweight but high quality, stable unit. I bought this go go with my CycleOps wind trainer. Glad I did because otherwise I'd be riding downhill the whole way. Yes, this is a "leveler" and you would need to stack another to go "uphill." Keep in mind that if you raise the entire bike up, it may be harder to get onto the bike if the top beam of your frame is already high for you. Can't imagine what could be better. Recommended.Update: I still think think this is a great item and worth buying with the trainer, but more for stability than leveling. The trainer only raises the back wheel a little bit so the downhill sensation I was worried about isn't so much of an issue. The bigger problem is that without this item your front wheel may be wobbly.