BOLANY Suspension Stem Features and Specifications
This adjustable spring damper system isolates handlebar vibration from road surfaces and gravel terrain, reducing hand fatigue during long rides. The lightweight aluminum construction keeps weight minimal while the vibration reduction technology absorbs repeated impacts that traditional rigid stems transfer directly to your wrists. Threaded adjustment lets you customize damping force to match your preference and riding conditions. Compatible with standard handlebar diameters, installation takes minutes with basic tools. The durable sealing prevents water and dirt intrusion into the spring mechanism for reliable performance season after season.
M***o –
Everything is fine.
J***r –
No instructions are included, and I don’t know the level of spring hardness.
From the photo, it seems that grade 3 brown is the hardest.
The fixation of the spring is locked by the hexagonal net in the cover, so it cannot be worn or removed by the eyeglass wrench, and a socket type tool is required, which has low maintenance.
The brown spring that seems to be the hardest in the initial equipment is soft, and in the bracket position, the handle is easily sunk when braking at low speed. I’ll wait and see if it gets better with time, but so far the impression isn’t good.
AliExpress Shopper –
Nicely finished product. I still have to install it. 😀
AliExpress Shopper –
Great seller very fast nice stem works realy well iam well happy thank you 10 out of 10