The latest Trek Domane, now in its fourth generation has undergone a drastic alteration by losing the frontal IsoSpeed technology which saw the frame lose almost 300 grams of mass. The rear IsoSpeed is still in place for a comfortable feel at the saddle, though it has been made non-adjustable, making the technology simpler and lighter. The bike delivers maximum performance, yet it is just as comfortable and can be used on tarmac as well as hard packed gravel.