Cogs - Chainrings & Crankbolts

GRAFTON CRANK ARM CAP SET

Throughout much of the writing of this section, it has been obvious that a high quality, after-market, replacement crank arm cap has been unavailable. Just three of the crank makers have addressed the need of lost arm caps for expensive cranks, and many of the plastic snap-in types probably won't last more than a few careful removals. John Grafton was the first to attend to this need, at about the time that he had his crank arms made for him by Benson Sim at Sim's.

These arm caps are machined from aluminum rod. The end of the rod is bored with a 710 thousandths of an inch deep hole to accommodate the crank bolt head. They are threaded to the necessary 22mm by 1mm threads arm cap hole found on nearly all cranks sold. Using a single slot on the face for removal, this fine pair of crank arm caps weighs just 4 grams per pair. They are available in Blue, Black, 3D Violet (Lavender), or Silver. Sold in pairs, there are frequently long delays in Grafton deliveries to us, as he is better known as a designer than he is a businessman.

Color -B-BK-L-S $ Price in Catalog

Cook Bros. Crank Arm Caps

This site sponsored by