They may not help you go any faster, but these mean-looking Tifosi Tyrant Sunglasses with lenses that adjust to changing light conditions will make you look like you're ready to rule, whether your domain is the trail or the road. Light Night Fototech lenses are intuitive blocking just the right amount of light for your conditions, and Grilamid TR-90 nylon frames have crazy bending strength so you can push them to the extreme.
Item No. » TI-TYRLNF
Nashbar: $69.951 or more: $69.95