Jenson USA (2009)
Each ring is CNC machined in Canada from 7075-T6 aluminum, one of the strongest alloys available today (inner ring is steel for durability). Outer rings are made from 4mm thick plate, while the middle is 5mm thick for unsurpassed durability. The rings feature Race Face's patented SHIFT technology - hard-wearing stainless steel SHIFT chips for fast, predictable upshifts. All these features result in a ring setup that's 15% lighter than last year's lineup, while retaining their incredible stiffness.
22t inner is steel.
| Construction: | 7075-T6 aluminum (steel inner) |
| BCD: | 104mm (middle, outer) 64mm (inner), 4 arm |
| Compatibility: | optimized for 9 speed drivetrains |
