This is the ultimate upgrade if you require the stiffest cranks money can buy matched with light weight. Shimano Dura Ace 9000 11 speed standard (53/39) 172.5mm Crank
Chainrings are in excellent condition. Crank arms have a little pitting and a little swirling. All pictured. Everything lines, up, but you can buy with the security Shimano will warranty them if there's ever an issue.
With a unique four-arm spider and Hollowtech II construction putting strength just where its needed, the FC-9000 chainset sets new standards for stiffness and low weight.
New 4-arm design for same stiffness with lighter weight
Hollowtech II construction
Hollowglide chainrings
11-speed compatible
Same bolt circle diameter for compact and traditional double chainsets means that one crankarm fits all chainring sizes