Review: Hutchinson Says the Blackbird is its Fastest Road Tire Ever, and We Agree.
Briefly

The new design ushers in an all-new casing concept that reduces rolling resistance, an all-new tread compound, and larger sizer.
The Racing Lab name is reserved for Hutchinson's fastest and most performance-driven designs. You might be familiar with some of the Racing Lab mountain bike designs...
Read at Bikerumor
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