The Model U/1 650b has been designed for what most people who venture out on a bike need. It is the unsung hero of the bike world: Fast, light, and nimble on all surfaces. Quick around your local bike trail, cool around the block, and rugged and durable on your gravel roads, fire roads and trail adventures. Its sporty geometry, vibration dampening materials, and wide, comfortable tires will eat up the miles wherever you take it. It is perfect for riders who want a comfortable do-it-all bike, packed with performance and multi-functionality.
The Urban Model U/1 exists to get you anywhere a paved route will allow you to go on a daily basis in a surprisingly comfortable way, and then some. Everything has been intelligently considered: weight reduction, more durable componentry, variable wheel size compliance, corrosion-proof inner and outer tube coating, and, most importantly, redefined superior fit and feel. These advantages have been carefully engineered into one bike provide for a ride feel that will inspire you to skip the ride-share app and go it on two wheels, all day, every day.
Our redefined V-Fit parameters account for more than just fitting your body type and measurements. They create a riding posture that is more attuned to an enhanced feel, quicker reflexes and steer control, and responsive climbing ability. A more upright riding position suits the rider who isn’t hell-bent on a podium finish. Our V-Fit helps balance your physical ability to control actions in the cockpit, resulting in a more confident approach to riding different surfaces. Ultimately, combining V-Fit with our exclusive lighter, stiffer, and more shock-absorbent Super Magnesium frames delivers a remarkably comfortable fit and feel in a performance bike. The longer your body feels good, the farther you can extend your ride, and, ultimately, the more adventure you can pack into each day.
Find Your Personalized V-FIT
Best Size
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V-FIT Saddle Height
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Model U/1
SMALL
MEDIUM
LARGE
Select Your Size
RREACH
390
410
435
SSTACK
555
590
631
TRTRUE REACH
455
475
500
TSTRUE STACK
606
641
682
2TOP TUBE LENGTH, HORIZONTAL
560
590
628
3WHEELBASE
1045
1077
1116
4CHAINSTAY LENGTH
438
438
438
5FRONT CENTER
615
647
686
6BB DROP
65
65
65
7SEAT TUBE ANGLE
73
73
73
8HEAD TUBE ANGLE
71
71
71
9SEAT TUBE LENGTH
405
455
510
10HEAD TUBE LENGTH
130
167
210
11STANDOVER HEIGHT
715
758
808
12SEAT TUBE LENGTH INCHES
16.2
18.2
20.4
13CRANK LENGTH
170
170
170
14STEM LENGTH
80
80
80
15HANDLEBAR WIDTH
660
660
660
LOAD MORE +
LOAD LESS -
LIGHTER. STRONGER. PROFOUNDLY BETTER.
VAAST Bikes® are the first to use ALLITE® SUPER MAGNESIUM™. This high-strength alloy features
excellent shock
absorption properties, weighs 33% less than Aluminum and 50% less than Titanium by volume, and is
significantly stronger than both. Through the exclusive use of this eco-friendly metal, we have
achieved a
ride feel like no other.
Efficient power transfer makes for easier climbing.
Shock absorption properties neutralize much of the road buzz.
Frame weight rivaled only by Carbon Fiber.
PEO surface treatment technology for added corrosion and wear resistance.
