The SRAM XX1 crankset has been taken to the next level with the addition of the new X-Sync Direct Mount chain ring. A new Direct Mount design eliminates the aluminum spider for a lighter and simpler design with better power transfer. Chainring swaps are easier than ever as well. Engineered in Germany, Direct Mount allows a notched Direct Mount chainring to bolt directly to the right crank arm with three T25 Torx bolts holding the chainring firmly to the crankarm.

The chainrings on most double and triple cranks have to be designed for chain movement which can lead to the dreaded dropped chain (which always seems to happen at the worst time). Since XX1 is a single front chainring system, the chainring can be designed around chain retention.

SRAM engineers looked into the causes of chain drop and video analysis showed side to side movement was the main culprit. They came up with a CNC-machined, wide tooth, narrow tooth pattern which perfectly mates with the XX1 chain for a snug fit. This profile known as X-Sync™ also features slight taller, squared-off teeth that makes chain drop a virtually non-issue.

From world cup racing to Marathon to downhill, XX1 is taking the mountain bike world by storm for some big reasons. XX1 is about 200 grams lighter than the next lightest cross country group because there is no front derailleur, shifter or front cabling required. Secondly, the chainring is engineered to retain the chain where chainrings on double and triple systems needs chainrings that allow chain movement. Because there is a reduced need to reel in chain slack, the rear derailleur can be designed for faster shifts and quiet performance with chain slap virtually eliminated.

• 544 grams including 32t chainring
• New X-Sync tooth profile provides maximum chain control
• Includes 32t CNC- X-SYNC Direct Mount chainring
• Q-Factor: 168mm

BB cups/bearing not included - available separately