Shimano has discontinued production of the Ultegra FC-R8000 11-speed road bike crankset. The FC-RS510 road bike crankset is available as an alternative, or the 105 FC-R7000 road bike crankset is still available as crankset arms without chainrings. The FC-RS510 is available as a complete road bike crankset, and chainrings and spare parts are still available.
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, silver, left, length 165 mm
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, silver, left, length 160 mm
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, left, length 175 mm
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, left, length 172.5 mm
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, left, length 170 mm
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, left, length 165 mm
Replacement crank arm for Shimano 105 FC R7000 Hollowtech II road bike crankset, 11x2-speed, left, length 160 mm