11T Jockey Wheels 2 PCS FOMTOR Aluminum Bicycle Rear Derailleur Pulley Guide Wheel for Shimano Sram Rear Derailleur Etc.(Red)

This product made my fatbike look and run better. No more bearing lubrication for me.

The bike I bought these for sees a lot of nasty conditions, and the stock pulleys get worn down quickly by mud and grit. I bought these looking for a more durable alternative to the factory plastic jockey wheels. The aluminumwheels on these are probably pretty durable, however, as another reviewer has mentioned, they fall off the bearings and slide from side to side. This, along with the fact that they are quite a bit wider, leads to really poor shifting. I only used them for one ride before they starting sliding side to side. When I saw the cheap price, I figured I would give them a shot. "Surely I'll at least get a little life out of them," I thought to myself. I was wrong. Save your money and buy the factory jockey wheels.

So far so good. Easy to install on shimano deore derailleur. Work and look better than the stock ones it came with.

Junk. Bearings fall out of cogs. Bushings clash with cogs so they will not Tuen when installed. Assembly is much wider than OEM and creates cage/cluster clash.

Los dientes de estas roldanas no tienen las dimensiones standar para cadena de 11speed! No tiene dimension standar ni en espesor ni en diametro!,, produce saltos en la cadena.