FPW Indoor Upright Bike Seat Adjust Locking Pin - Pull Pin Release Pop Pin Knob - MEYOUNG 7686

If the seat adjustment pin on your upright exercise bike is broken or missing, this pop pin from MEYOUNG is exactly what you need.

It's the little knob you pull to slide the seat up or down, then let go to lock it in place.

Super simple, but essential.

This one is a direct replacement for a lot of gym bikes.

Just pull, adjust, release—done.

Made for gym and training equipment.

If your seat wobbles or won't stay put, this pin might be the fix.