SRAM cut grams out of their Rival aluminum crankarms but didn’t cut corners on power measurement. The light and accurate spindle-based power unit nestles into the striking redesigned arms to give you the data you need and our newest direct mount chainrings are light and stiff while looking good.Spindle-based power meter unit measures left side power to calculate total watts Long battery life (400+ hours) to power a season of rides (User replaceable AAA lithium battery) IPX7 waterproof to 1 meter for 30 minutes X-Sync wide-tooth narrow-tooth aluminum chainring technology provides maximum chain control Carbon fiber crankarms are incredibly strong and lightweight DUB bottom bracket adds durability and simplicity (Bottom bracket sold separately) 150mm Q-factor / 47.5mm chainline
| Rings | 42 |
| Number of Chainrings | Chain Retaining Single |
| Drivetrain Speeds | 13 |
| Chainring BCD | Direct Mount SRAM 8-Bolt |
| Chainline/Hub Compatibility | 135/142 Road Disc Hubs > 415 mm Chainstay |
| Color | Black |
| Crank Length (mm) | 160, 165, 170, 172.5, 175 |
| Crank Intended Use | Gravel |
| BB Included | No |
| Pedal Spindle | 9/16" |
| Spindle Interface Type | SRAM DUB |
| Defined Color | Black |
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