The 2021 Trek Domane SL 7 Road Bike in Charcoal/ Black is all about smooth riding, speed & versatility. The lightweight OCLV Carbon frame has both Front & Rear Iso Speed to smooth out bumps in the road & reduce fatigue so you can stay stronger on long adventures. With Ultegra Di 2 equipment & carbon wheels the complete bikes come in under 9KG. The Domane SL 7 is built around a 500 Series OCLV Carbon framewith road-smoothing Front & Rear Iso Speed. Iso Speed works a little like suspension. It allows parts of the bike to decouple in a controlled way to absorb bumps, rather than sending a shock up through the frame. The effect is to smooth out bumpy roads & reduce the shock from potholes & cracks so you can carry your speed, keep the power down & not get as tired. On the SL 6 you also get an Iso Zone handlebar to take even more buzz & vibration out. The Domane bikes are race fast but designed to be used on long all-day adventures. The Domane SL 7 comes a couple of major upgrades. These are Ultegra Di 2 11 speed gearing & Bontrager Aeolus Pro 3V OCLV Carbon Tubeless Ready Wheels. Combined they give you crisper shifting, more speed & faster acceleration so you can really fly out of every corner. This bike is perfect for Riders who want a fast road bike that can handle long all day endurance rides even on the bumpiest & most potholed back roads. Want to hit up some cobbles? It can handle that as well. With the complete bike weighing in under 9KG, carbon wheels & Di 2 equipment this is a seriously fast bike. Key Features This bike is super versatile, super smooth & equally suited to racing, club rides & all-day adventures on the open road Road-smoothing Iso Speed absorbs fatiguing bumps in the road for a faster, smoother, more comfortable ride A sleek internal storage compartment gives you a versatile spot to stow tools & gear The stable Endurance Geometry is comfortable over long distances, but this is still a quick racing bike