Cogs - Chainrings & Crankbolts

AVID MICRODAPTOR-2

The Microdaptor replaces the standard inner chainring on cranks using 74mm inner/110mm mid-outer bolt pattern. The smallest chainring possible with a 74mm bolt pattern is 24 teeth, yet there are some riders who like the possibility of using a 28, 30, 32 or 34 tooth low geared rear cog with something smaller than a 24 tooth up front. The Microdaptor allows the rider to use a 58mm BCD Shimano styled Hyper- C type, "compact" inner front chainring. The adapter is CNC machined from 1/4" (.250" or 6.38mm) thick aluminum plate.

Arms extend to the 74mm bolt holes, with tapped holes at the inner diameter on the adapter for the 58mm chainring to bolt to. The Avid Microdaptor comes with a set of short length fixing bolts (8mm x .75mm x 6mm) to hold the included steel inner chainring to the aluminum adapter. The aluminum piece comes anodized in Blue, Black, Lavender or Silver. The adaptor comes with either a 20 or a 22 tooth chainring. The aluminum Microadapator weighs 25 grams, the bolts weigh 10.5 grams and the 20 tooth inner weighs 27.5 grams, so the total set weighs 63 grams. Specify color and size.

Size-20-22 / Color-B-BK-L-S $ Price in Catalog, 58mm Stainless Steel chainrings 20t, 58mm Stainless Steel chainrings 22t $ Price in Catalog

Steel Inner Chainring Fixing Bolt Set

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