What's the difference between Wide and standard cranks?
At SRAM, the Wide option is designed to provide frame designers with approximately 2.5 mm of extra space on each side of the bottom bracket. By shifting both crank arms outwards by 2.5 mm, this additional space is created, primarily on the drive side where the chainrings are located. This widened stance is achieved by increasing the spindle width of the crank, allowing room for the wider tires that are becoming more popular among riders.
However, it's essential to note that this increase in spindle width affects both the chainline and the Q-factor of the crankset. In a standard road bike crank, the chainline is 45 mm, while the Wide crank increases it to 47.5 mm. As for the Q-factor, a standard road crank has a measurement of 145 mm, while the Wide crank setup increases it to 150 mm. Although the increments may not seem significant, it's crucial for riders to be aware of these changes to ensure the compatibility, bike fit, and performance of their bikes.
If you're considering a 1x setup, not much changes apart from the ability to accommodate wider tires for various adventures. However, if you desire the extended range of a 2x system, it's essential to use a wide specific front derailleur. Due to the 2.5 mm increase in chainline, the front derailleur must move over the same 2.5 mm. Without this wide-specific front derailleur, proper shifting won't be achievable.
Where would 'Wide' be needed?
Road Wide cranksets are required in the following situations:
- If your bicycle specifies a 47.5 mm chainline.
- If using SRAM Eagle Transmission on a gravel or road bike.
- If using 43/30T crankset: Our 43/30T crankset comes as fitted with the Road Wide spindle.
- Please note, that a Wide specific front derailleur will be required for Wide spindles.
This increase in width does open some opportunities, as the longer DUB crank spindle accommodates both Road and some wider 73 mm or BB92 width frame bottom bracket standards for unmatched cross-compatibility across frame manufacturers (will still need to be paired with a maximum 142mm rear end). SRAM Road Wide allows for even more mixing and matching between components and setups to dial in the perfect bike for your future endeavors.