In terms of an upgrade, Storck’s Power Arm represents a massive investment even compared with the likes of Sram Red and Shimano Dura-Ace. But it does offer the sort of performance that goes along with that price.
At just over 500g, it’s very light, yet it feels – and measures up as – stiffer and more responsive than any of its competitors. Shifting quality is good, though not quite the best, but there’s little else to fault this chainset on.
The cap for installing the non-drive crank is slotted to be tightened using a coin and not a tool. This is to ensure you don’t overtighten it levering on a spanner or screwdriver.