SRAM X01 Eagle 12 Speed BB30 Direct Mount Crankset

As much as we all might like to forgo the gear choices for a classically simple single speed drivetrain, lumpy terrain and varying trail surfaces dictate otherwise. With 11 speed cogs sometimes leaving us hanging for gears, SRAM comes to the rescue for one by aficionados with its unprecedented 12 speed Eagle X01 drivetrain. The SRAM X01 Eagle 12 Speed BB30 Direct Mount Crankset drives forward with an updated design and tastefully understated graphics. Building on the original X Sync chainring's chain retention ability, Eagle's X Sync 2 chainring changes things up with features to promote yet more robust chain retention. As with the original, each tooth is CNC machined to support the chain's inner and outer link widths by providing a variable thickness from tooth to tooth, so the chain and chainring essentially lock together and push away mud with ease. Where the original X Sync teeth took on a boxy shape, Eagle's chainring boasts aggressively profiled teeth that hold the chain like a greedy child clutching a bag of holiday candy before letting it glide seamlessly back to the cassette for smooth, friction free spinning. SRAM utilizes its Carbon Tuned technology to fashion the X01 Eagle arms with a proprietary carbon layup that increases stiffness where it's needed and minimizing excess material for an overall reduction in weight. In contrast to its top tier XX1 Eagle cousin's hollow core construction, the X01 Eagle crank arms feature a foam core that adds a handful of grams to keep costs down without impacting responsiveness. The direct mount chainring interface also affords the option of quickly subbing different rings for different shapes of terrain, allowing flexibility to adapt to the day's planned route.