Created for performance, its quality aluminium frame provides the perfect balance between comfort and lightness. This bike is ideal for taking on all gradients and distances
ID 8559051
365 days to return for members
Features
Design benefits
anatomic design
Geometry adapted to women's morphology thanks to the cycling position elements
B'Twin Ultra Evo Vario aluminium frame, carbon fork, aluminium pivot.
sitting comfort
Specially designed women's saddle for sport, designed by the women's design team
Design details
How to choose the right size Ultra AF Women's bike
Women from 1.50 - 1.64m: Size XS
Women from 1.60 - 1.71m: Size S
Women from 1.68 - 1.76m: Size M
Frame / fork
B'Twin Alur18 Alu6061 frame approved by the UCI.
Aluminium is an ideal choice for obtaining an excellent propulsion-to-comfort ratio. The variable thickness tubes considerably reduce the weight. The cables are built into the frame.
Frame weight: 1400g in size M.
B'Twin carbon fork and aluminium pivot
The combined use of carbon and aluminium: an ideal combination to obtain homogeneous behaviour with the frame.
Fork weight: 550g.
Handlebar / stem / steering
Compact B'Twin handlebars in 6061 aluminium
Width from axle to axle adapted to women's shoulder width:
Bike size XS and S: 380mm.
Bike size M: 400 mm.
Handlebars weight: 297g in size 380mm.
6061 aluminium stem
Bike size XS: 60mm stem - 109g
Bike size S and M: 80mm - 127g
Drivetrain
Shimano Tiagra 4700 10-speed drivetrain with levers adapted for better grip by women's hands.
Shimano Tiagra 4700 double front derailleur.
Shimano Tiagra 4700 GS 10-speed rear derailleur.
Shimano Tiagra double compact bottom bracket.
Crankset / cassette
Shimano Tiagra 4700 50 X 34 bottom bracket.
Crank length varies according to the bike size:
XS / S: 165mm.
M: 170mm.
Shimano Tiagra 4700 10S 11 x 32 cassette.
(11,12,14,16,18,20,22,25,28,32).
Saddle / seat post
B'Twin woman sport saddle, chosen for its comfort and efficiency.
Weight: 240g.
B'Twin Competition aluminium seat post.
Diameter: 31.6mm.
Length: 300mm.
Weight: 266 g.
Brakes
Direct Mount Tektro T531 F front brake
Tektro R540 rear brake