Weight of Shimano and Rotor 12-Speed Cranksets (grams)
Below is a comparison table of the weights of Shimano and Rotor cranksets for complete setups (170 mm, all chainring options included). This guide helps you choose the ideal crankset based on your needs: lightness, compatibility, or versatility.
| Crank Arms | Chainrings | 105 Di2 | Ultegra 8150 | Dura-Ace 9250 | Vegast 24 | Vegast 30 | Aldhu 24 | Aldhu 30 | Aldhu Carbon |
|---|---|---|---|---|---|---|---|---|---|
| 170 mm | 50/34 | 754 | 700 | 685 | 745 | 680 | 720 | 650 | 550 |
| 170 mm | 52/36 | - | 711 | 692 | 758 | 693 | 733 | 663 | 563 |
| 170 mm | 53/39 | - | - | - | 796 | 731 | 771 | 701 | 601 |
| 170 mm | 54/40 | - | - | 714 | - | - | - | - | - |
Note: The weights for Shimano are official manufacturer data. The weights for Rotor were measured by velo-perso.com, ensuring optimal accuracy.
Frequently Asked Questions about Rotor and Shimano Cranksets
Is a Rotor crankset lighter than a Shimano crankset?
Yes, in general, Rotor cranksets are lighter than Shimano cranksets. For example, the Rotor Aldhu Carbon with 50/34 chainrings weighs 550 grams, while the Shimano Dura-Ace 9250 weighs 685 grams in a similar setup.
What is the lightest crankset on the market?
The Rotor Aldhu Carbon is one of the lightest cranksets available, weighing just 550 grams with 50/34 chainrings thanks to its carbon arms and aluminum axle.
Why are Rotor cranksets lighter with a 30mm axle?
Rotor cranksets with a 30mm axle use aluminum instead of the steel axle found in 24mm versions. This reduces weight, and the arms themselves are more aggressively machined to save even more grams.
What is the Rotor equivalent of a Shimano 105 crankset?
The Rotor Vegast 24 is the closest equivalent to the Shimano 105 crankset. It offers great versatility with a reasonable weight and full compatibility with 24mm bottom brackets.
What crankset should I choose to upgrade from Ultegra 12-speed?
The Rotor Aldhu Carbon is a great upgrade. It's lighter, modular, and compatible with more chainring options, including 50/34, 52/36, and 53/39 setups.
Do I need to change my bottom bracket to install a Rotor crankset?
No, not if you choose a 24mm axle version — it's compatible with your Shimano bottom bracket. However, if you go for the 30mm axle version, you’ll need a matching 30mm-compatible bottom bracket.
What is the weight of the Shimano Ultegra R8100 50/34 crankset in 172.5mm?
The Shimano Ultegra R8100 50/34 crankset in 172.5mm length weighs approximately 713 grams.
What is the weight of the Shimano Dura-Ace 9200 170mm crankset in 50/34 or 52/36?
The Shimano Dura-Ace 9200 crankset in 170mm with either 50/34 or 52/36 chainrings weighs about 692 grams.
What is the weight of the Rotor Aldhu Carbon 172.5mm crankset in 52/36?
The Rotor Aldhu Carbon crankset in 172.5mm with 52/36 chainrings weighs approximately 576 grams.