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the helmet's airflow zones allow the helmet to pass through the air with greater efficiency
the one we save for the most demanding rides
Lightweight in-mold PC shell- The outer PC shell is scaled back to cover only the absolutely necessary parts of the liner
Extensive comparative tests have demonstrated that the 9-tooth is as efficient as any 10 or 11-tooth sprocket on any system
HAMMERHEAD Karoo 2 Custom Color Kit - Orange quoc the helmet's airflow zones allowThe Karoo 2 Custom Color Kit allows you to change the color of your computer to be an extension of your bike or kit. Or, pick an entirely new color to stand out in the crowd! The kit contains everything needed to make installation quick and easy.
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