£5,699 High-performance endurance bike
Lapierre has overhauled the Pulsium model for 2018, with the 900 on test being the highest model in the range. The Pulsium is a bike designed for the roughest roads and for big distances, and is used by the Lapierre-sponsored World Tour team FDJ to tackle events like Paris-roubaix with its infamous cobbled farm tracks. Comfort is without doubt the main goal of the bike and one that it succeeds in, with the Shock Absorption Technology (SAT) giving a very smooth ride at both front and rear. A notable improvement in the new version compared to previous models is in its lateral stiffness and response to pedal inputs, with no noticeable flex in the frame under even the biggest efforts. The specification is seriously impressive, including the complete new Dura-ace 9150 Di2 groupset, with its Synchro Shift option and extra programmable buttons that can be used for something like a compatible GPS computer. Gear-shifting quality is exceptional, as you’d expect. Rounded off with a comfortable carbon handlebar and stem from Zipp and a lightweight and comfortable carbon-railed Fizik saddle. One of the benefits of all these high-end components is that the Pulsium 900 is very light. Combined with the responsive frame, this helps it to climb superbly, with the longest and steepest alpine climbs being no issue. Helping keep the weight low are the high-end Mavic Kysrium Pro Carbon SL wheels, which are a claimed 1,400g. The low weight is easily noticeable in any sprints or steep climb and the braking performance is also impressive, especially for carbon rims, giving excellent feel, modulation and not a hint of brake fade on even the longest alpine descent. The wheels are reasonably stiff, but bigger or very powerful riders might notice a hint of flex under bigger power efforts. Handling and cornering confidence is a real strong point, helped by the excellent brakes and ride comfort, but also the geometry and rider position, which is a perfect mix of agility with a feeling of being safe and capable.
The high spec of the Pulsium 900 helps it achieve very low weight