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