SRM Origin Aero cranks let you swap crank lengths – at a cost
SRM has unveiled its new Origin Aero Aluminium cranks, giving riders a way to experiment with crank length without buying multiple cranksets. The arms use bolt-on anodised tips available in seven lengths, allowing adjustments in 2.5 mm increments from 160 mm to 175 mm.
SRM says the Origin Aero is its narrowest road crank to date, with a 144 mm Q-factor – narrower than Shimano’s road (148 mm) and gravel (151 mm) cranks, edging closer to track bike territory. The wide, flat arms are also pitched as an aero upgrade, aiming to reduce drag while maintaining stiffness.
There’s a catch, of course: price. The arms alone are €2,015, throw in the SRM power meter spider (€1,210), and you are over €3,000 before you've put a chainring on.
