The shimano fc-rx820-2 combines weight savings and optimum efficiency for mixed terrain riding and competition. the double chainring meets the demands of gravel, retaining the tighter ratios needed to maintain your position in the peloton. the 2×12 crankset uses a combination of 48-31d chainrings, and 170, 172.5, and 175 mm long cranks.・Low development gaps for […]