Shimano Ultegra R8000 crankset. - Optimized lightweight crank arm design produces excellent power transfer efficiency - Minimized weight without sacrificing stiffness - Hollowtech II - Rider tuned gear performance through various gear combinations - Possible to choose the best choice for ride - Redesigned FC for greater frame compatibility - Wider gear pitch increases clearance between chain and leading teeth to provide compatibility with frames with O.L.D. 135mm and 410mm chain stay length - Model Number : FC-R8000 - Series: Ultegra - Crank Construction: Hollowtech II - Crank Arm Length : 165, 170, 172.5, 175mm - Bottom Bracket : SM-BBR60/SM-BBR60-PB - Chain Line: 43.5 - Average Weight: 690 grams (53-39T), 681 grams (52-36T), 674 grams (50-34T), 668 grams (46-36T)

SRAM pioneered the 1x drivetrain, and the SRAM Force 1 crankset evolves the innovation. It’s lighter, stronger, and simpler—non-aero chainrings can now be installed with a single tool. For cross, TT, tri and crits, this is the king of 1x. - Single-ring drivetrain simplifies functionality and reduces weight - Non-aero chainrings can be installed with a single tool, making gearing changes a breeze - SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control - Can be upgraded to a power meter

Experience lightning-quick acceleration and stellar efficiency with SRAM's Black Red Crankset. The ultra-stiff carbon arms, integrated carbon spider and super-strong Red PowerGlide chainrings transfer power instantly to catapult you forward. Plus, this crankset is super light and features easy-spinning gearing for optimum speed up and down the hills.

Shimano's Dura-Ace Hollowtech II Crankset has always set the benchmark in strength-to-weight ratios, which is why it's proven itself at the highest echelon of competition. It's made of cold-forged and CNC-machined aluminum and has hollow crankarms and a hollow large chainring. Both chainrings also feature a new tooth design. The result is legendary stiffness for awesome power transfer and precision shifting you'll love. Plus, the Dura-Ace crankset is also lighter than many carbon models.