Review on GANOPPER 450mm Long Seatpost: Alloy Aluminium Micro Adjustable Head for MTB and Road Bicycles – 6 by Chris Nonamaker

Used on my son's small adult bike. He got too big for his bike. The main issue was the seat height as he could only extend his legs 1/2 when pedaling. It used to be obvious that he was riding a bike that was too small, but now he looks normal and can straighten his legs at a perfect 90-95% downhill. It appears to be a quality item and fits perfectly. A permanent solution as the high seat of the smaller bike increases reach to the handlebars. But as far as I know, he didn't complain about the range and didn't notice it either. A great way to extend the life of your "teenage" bike. until we decide to buy something new, but the bikes are a bit hard to find due to the quarantine. I think sales are up a lot and probably there are some supply chain issues. Don't forget the lube. as far as possible and apply fresh grease to post and hole. Remove any excess material after the seat height has been adjusted.