Profile Racing of St Petersburg, Florida makes machined from aluminum plate stock replacement chainrings. In each case the rings are milled out of plate with a CNC milling machine. The chainrings are cut from 3.5mm thick plate then turned to reduce the thickness in the area of the teeth equally from both sides making the teeth 2.0mm thick.
The chainrings are anodized in Blue, Black, Green, Lavender, or Silver. The inners have a 74mm bolt pattern, the middle and outers have a 110mm pattern. The inner positions are available in 24, 26, or 28 teeth. The mids are made in 36 or 38 teeth and the outers are made in 46, or 48 teeth. Although these don't have all the riveted on steel parts some of the Japanese chainrings have, they are easily affordable and made in the States. $ Price and Sizes Available in Catalog
Shimano Superglide Replacement Chainrings
