You’ve made it this far by choosing the H3.  Your about to pull the trigger and you notice this H3D thing?  What’s the difference?  Why is it more expensive?  That must mean it’s faster right?

The H3 front is faster in crosswinds, some head winds, and is a better all around front wheel.  Think of the H3D as straight and fast.  If you live, race, and train in a non windy place, this front wheel is the tool for you.  The cosmetic different between the two is Jet 9 fairing is on the H3D.

The H3D rear is the fastest non disc on the market.  The addition of the 90mm fairing provides that extra aerodynamics.

In summary, the H3D rear is worth the extra money.  The H3D front shouldn’t be purchased without some deeper thought on climate and races entered.  The H3 front could be a better bet.