7005 ultralite tiagra se if youre looking for your first racing bike or perhaps dont want to damage your carbon frame whilst crit racing the aluminium framed ultralite is the perfect bicycle for riders wanting a more aggressive riding position matched with the 10 speed shimano tiagra groupset and available inlimited numbers the ultralite frame has always been a popular choice with an aluminium frame that weighs just 1350g special edition specification shimano r501 wheelset full shimano tiag