The frameset is very stiff due to tapered head tube, wide bottom bracket and no shock dampening in the forks. It accelerates fantastically (especially on climbs) - and amplifies the excellent Dura Ace anchors. However, it comes with a penalty - the ride is rather harsh compared to CR1's - it feels as if the tyres have 2.5-3 bars more pressure in them and the chainslap occurs regularly on small rear cogs over bumps, due to the rear fork design (and I hate chainslap with passion).