Frame: Our engineers' expertise in aluminium frame design and e-bike technology shines through in the Touring Hybrid SL. Because the torque output of Bosch's drive system is so great, they incorporated a double chainstay, double chamber seat tube and hydroformed down tube for the Easy Entry version, which incoporates the battery into the luggage rack to make the step through easier. For the Classic Men's and Trapeze frames our engineers have repositioned the battery to the down tube for more stable handling. The integrated luggage rack - with replaceable wear items - add additional rigidity to the whole structure. For 2017 we've even optimised battery placement, so the diamond and trapeze frames feature down tube-mounted batteries and the step-through frame integrates its battery into the rack. The result, combined with our Efficient Ride Geometry, is an unmatched combination of low weight, strength and stability.
Extremely high tensile strength heat-treated 7005 aluminium alloy is developed for the highest requirements. It is very stiff, fatigue resistant, corrosion resistant and has high elongation. Our Superlite tubes are double butted, giving very light tubesets with a high level of stiffness.