The basis for the Ultegra Di2 racer from the traditional Dutch brand is the tried and tested Kimera carbon frame, albeit in a version that differs from the top model in the series due to its more favourable fibres and correspondingly slightly higher weight. The absence of cable stops for mechanical shifting is consistent and emphasises the dynamic frame shape. It would have been even nicer if Koga had come up with its own solution for attaching the battery instead of resorting to the somewhat improvised retrofit solution for the down tube from Shimano. The Ultegra wheels, which are rarely fitted by original equipment manufacturers and are mechanically and visually top class, make the bike an attractive proposition. As is typical for Koga, the riding position is very sporty and the steering behaviour is balanced.
Price 3,455 Euro
Weight 7.7 kilos
Available in specialised shops
Reference/Info www.koga.com
Weight frame/fork/steering bearing* 1,219/414/72 grammes
Frame sizes** 50, 52, 54, 56, 58, 60, 63 cm
Seat/steering angle 73,5°/73,5°
Seat/top tube/head tube 560/575/153 mm plus 10 mm headset cap
Wheelbase/caster 995/56 mm
Stack/Reach/STR*** 557/408 mm/1.36
EQUIPMENT
Fork Koga
Steering bearing Ritchey Pro (top 1-1/8, bottom 1-1/4 inch)
Brakes/gears/bottom bracket Shimano Ultegra Di2 (50/34 t., BB86)
Wheels/tyres Shimano Ultegra/Schwalbe Ultremo ZX
Handlebar/stem Koga/Koga
Saddle/post Koga/Koga (31.6 mm)
* Weighed weights. ** Manufacturer's specification, test size greased. *** Stack/reach: projected vertical/horizontal measurement from the centre of the bottom bracket to the top of the headset cap; STR (stack to reach): Values from 1.45 to 1.55 indicate a sporty riding position, values below that are race-like, above that comfortable.
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