This helped my back from a lot of stress while riding my bike. I bought this product for everyone in the family and everyone likes it. To work well, you need to carefully adjust the Shock Absorber to your weight and also adjust it to be harder or softer.
It's allows you to shift your seat (saddle) forwards and backwards by a LOT. If its configured at the extreme ends, you can probably shift your seat 3-4 inches forwards OR backwards in EACH DIRECTION from center. Why does this matter? On my bike frame (Sundeal F2 folding bike), the higher I extended the seat the further back the seat goes. At a height that felt comfortable for me, my feet were too far forward, so I wasn't pedaling efficiently. This solved that.
Michael Paul Abiog
its easy to install and very comfortable to ride on. i suggest you have to know the right position and level of the saddle to the seat post.
Finally figured out how to install. Tried pointing the large opening towards the rear but the seat front was inflexible. Turned it the other way and now it’s perfect. Good product.
I really like this spring; it makes me feel like I'm riding a Harley or something. Really smooths out the ride, and it tucks out of the way under the seat, too.