Lighter is better right? Yes and no. Yes, it is better if it can transfer your power efficiently to the road. No, if all that effort you put into moving the bike forward simply goes up in flexing the frame back and forth. The Helium range is a non-compromising solution for the rider who demands the lightest weight from his bicycle yet still wants the bike to stay stiff and resilient under his feet. The Helium, and especially the SLX (which weighs less than 750 grams for size M), is still stiff enough to take all the stomping our sprinting ace, André Greipel, has to offer, yet light enough to float over the highest mountain passes with ease.