Reduce the friction dragging down your drive train
Polyurethane roller with 98A Durometer hardness for long life
Precision contact sealed bearings keep water and dirt away
Rollers 1231-0037, -0039, -0040, -0041 do not use a bearing, but ride directly on the frame boss. These rollers, made from Delrin, are self-lubricating and offer significant improvement over the OEM
M795-00 and M795-10 are available in colors, others in black only
