Taking many features from pro-level equipment, this 2-piece cap-free design Tiagra chainset offers unbeatable performance.Features:2-piece cap-free design is quick and easy to install whilst being lighter and stiffer than a traditional crank/ bottom bracket assemblySG-x chainrings feature strategically placed chain pick-up pins and tooth profiles to ensure fast and positive shiftingDesigned to work with hollowtech ii type bottom bracket cupsCompatible with 10-speed hg-x chainsAnodized aluminium crank armsLightweight aluminium chainrings4 arm, 110 mm bolt circle diameter
