Shimano Dura-Ace R9100 175mm 50/34 weight

As a confessed weight weenie, I generally try to find the weight of components before impulsively buying it. There are a couple reasons for this: first it helps slow down the process (i.e. fewer things that I need to explain to my partner later), and second if I’m going to add weight to the bike I want it to be a conscious, measured decision. So it was quite frustrating that I wasn’t able to find the weight of the the Shimano Dura-Ace R9100 175mm 50/34 crankset. Apparently, all the other weight focused cyclists out there opt for the less aerodynamic, but obviously slightly lighter, 172.5mm cranks. Or, perhaps, my searchfu is just lacking.

Dura-Ace R9100 175mm 50/34

Dura-Ace R9100 175mm 50/34

Dura-Ace R9100 175mm left crank

Dura-Ace R9100 175mm left crank

Shimano crankset pre-load bolt

Shimano crankset pre-load bolt

Dura-Ace R9100 175mm 50/34 right crank and chainrings

Dura-Ace R9100 175mm 50/34 right crank and chainrings

Ultegra R8000 175mm 50/34

Ultegra R8000 175mm 50/34

Just for reference

Either way, the weights are:

Crankset: 622g

Left crank: 173g

Right crank & chainrings: 444g

Pre-load bolt (should be the same for all Shimano cranks): 4g

Anyone good with the math (or can use a calculator) will notice that 4+444+173 = 621, not 622. So clearly, there’s some loss of detail in the .x position because my scale doesn’t measure at that level. Should probably get a better scale.

For reference, the Ultegra R8000 version of this crank comes in at 691g.

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