If you are looking for absolute shifting perfection, look no further. With 4 upshift ramps, rivets for both outer and inner ling engagement,and 14 perfectly times sweet spots, the TruVativ XX Chainrings will keep your 2 by 10 bike shifting better than you ever thought possible.
7075-T6 aluminum construction with a (TGA) tungsten-grey hard anodized finish treatment and CNC/laser detailing for 2x10-speed drivetrains and XX specific bolt-circle-diameter
6mm thick outer ring tapered to engage 10-speed chains
Perfectly-timed shift pins and ramps for XX precision shifting
Designed for 26/39t combinations: do not use alternate configuration
For 156mm Q factor cranks
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1x9 XC Racing (1),
XC Trail (1)
5.0 GEARS 1 review
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Was trying to run a 1x10 with the XX stuff. Previously had a 42t up front, and found it too difficult. Switched to the 39, and it is good enough for most Michigan trails.
I think a 36 or 37 would be perfect - looks like someone out there is making them, but not SRAM.