Road Bike Ultra 900 CF designed for road cycling races and frequent training sessions on flats or in the mountains.
New B'Twin Ultra Evo Dynamic carbon frame combined with Shimano 105 11-speed drive train.\nFrame UCI-certified for road cycling races.
The reliability of the Shimano 105 11-speed groupset.\nMavic Aksium 17 C wheels.
B'Twin ULTRA Evo Dynamic frame / fork module.
Shimano 105 brakes with direct mount on the front calliper.
B'Twin Ultra Evo Dynamic frame is the most advanced frame available to tackle mountains and win the most demanding classic races.
Weight: 850 g in size M (without accessories).
A blend of HM and IM carbon fibres for one of the best weight-to-speed ratios on the market.
The frame was specially designed for the most demanding climbers and sprinters. The bottom bracket is a standard PressFit 86 for greater stiffness of the chassis.
Fork / suspension
The B'Twin Ultra Evo Dynamic fork is exclusive to the B'Twin Ultra Evo Dynamic frame.
Weight: 320 g.
Full carbon fork.
Handlebar / stem / steering
B'Twin aluminium competition frame Oversize ERGO
Size / Width axis-axis
S: 400 mm
M / L: 420 mm
B'Twin oversize competition aluminium frame
11-speed Shimano 105 groupset.
The 105 offers the same precise indexing as the Ultegra and Dura-Ace groupsets.
The derailleurs feature an all-new design. The front derailleur has a guide combined with a new spring mechanism that ensures smooth shifting between chainrings.
The rear derailleur now sports the same tried-and-tested mechanism found on the Dura-Ace groupset (cassette with 32 teeth max. for high-mountain cycling).
Crankset / cassette
Shimano 105 11-speed ultra-versatile, 11x28 cassette.
11 ; 12 ; 13 ; 14 ; 15 ; 17 ; 19 ; 21 ; 23 ; 25 ; 28.
Crankset: Shimano 105 5800, 52x36.
XXS / XS / S: 170 mm
KMC X 11 chain.
Shimano 105 Direct Mount (front)
2 symmetrical mounting axes for more effective braking control and power. Adjustable spring tension on the front calliper.
Mavic Aksium 17 C wheels
Materials: S6000 aluminium.
Internal width: 17mm
Front without tyre: 865g
Rear without tyre: 1015g
Lacing: radial on the front and rear on the side opposite the freewheel, crossed in pairs at the rear on the freewheel side
Number: 20 at the front and rear
New Yksion 700x25 tyres for added comfort and performance.
Saddle / Seat post
B'Twin Sport Ergo Chromo
Pedals not included.
7.8 kg in size M, without pedals.
XXS / XS / S / M / L / XL
7.8 kg without pedals
Frame : 100.0% Carbon
Store your bike in a dry, cool place.
Road Bike Ultra 900 CF reviews