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This new concept is described by Specialized as a 'road terrain bike'. The Sirrus has flat bars, V-brakes and 700c wheels, but it's not really a hybrid as we generally know them. With a genuinely lightweight aluminium frame and rolling on Specialized 26mm Turbo tyres, the Sirrus is more like a fast touring bike - albeit with flat bars - perfect for long group rides or commutes. * Fully butted aluminium frame - 3.4 lbs * Mavic wheels * Specialized Armadillo tyres - the most puncture resistant pneumatic tyres ever * Shimano Deore 27-speed Rapidfire Plus MegaRange transmission * Specialized Sirrus chainset - higher geared than the majority of ATB chainsets * Shimano SPD pedals * USE suspension seatpost - when have you ever seen one of them on a production bike before?
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