The Spline Drive Spider for Outboard BB's is designed to improve
your chainline. It places the chainring over the bearing and cup
itself, so that the chainline is closer to the centerline of the
bicycle.
Machined from a thick plate of aluminum, the Spiders have a Heat
Treated CrMo Steel insert pressed into them to mate with the splines on
your Profile BB Spindle.
Four Arm (104bcd) and 5 arm (110bcd) versions are available now.
The Sinz 4 bolt chainrings do not fit these spiders. Profile, Sharp, and Shimano 104bcd 4 arm chainrings all fit perfectly.
This product was added to our catalog on Wednesday 12 May, 2010.
