Vaast Bikes Japan
U/1 650b - Matte Black
U/1 650b - Matte Black
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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.
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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.
U/1 650b size & spec
U/1 Frame Geometry
| SIZE | S | M | L | |
| R | REACH | 390 | 410 | 435 |
| S | STACK | 555 | 590 | 631 |
| TR | TRUE REACH | 455 | 475 | 500 |
| TS | TRUE STACK | 606 | 641 | 682 |
| 2 | TOP TUBE Length, Horizontal | 560 | 590 | 628 |
| 3 | WHEELBASE | 1045 | 1077 | 1116 |
| 4 | CHAINSTAY Length | 438 | 438 | 438 |
| 5 | FRONT CENTER | 615 | 647 | 686 |
| 6 | BB DROP | 65 | 65 | 65 |
| 7 | SEAT TUBE angle | 73 | 73 | 73 |
| 8 | HEAD TUBE angle | 71 | 71 | 71 |
| 9 | SEAT TUBE Length | 405 | 455 | 510 |
| 10 | HEAD TUBE Length | 130 | 167 | 210 |
| 11 | STANDOVER Height | 715 | 758 | 808 |
| 12 | SEAT TUBE Length inches | 16.2 | 18.2 | 20.4 |
| 13 | CRANK Length | 170 | 170 | 170 |
| 14 | STEM Length | 80 | 80 | 80 |
| 15 | HANDLEBAR Width | 660 | 660 | 660 |
U/1 650B Specification
| Specification | |
| Frame | Urban Optimized 700c / 650b AE81 ALLITE Super Mag - VAAST Urban geometry - internal cable routing - fender / rack ready |
| Fork | VAAST Urban full-carbon disc - rack & fender ready |
| Tires | WTB Venture 650b x 47mm Road Plus Comp w/tan skinwall Tire |
| Rims | Alex 650b Double Wall aluminum - 28H - Presta Valve |
| Rotors | 160mm F & R |
| Crank | Forged Alloy - 40T |
| Cassette | microSHIFT 11-42T - 9-speed |
| Shifters | microSHIFT Advent 1 x 9 |
| RD | microSHIFT Advent M619M 1 x 9 speed |
| FD | n/a |
| Chain | KMC X9 |
| Brakes | Hydraulic disc brakes w/Three finger lever |
| Bottom Bracket | Sealed cartridge bearing |
| Hub F | Sealed cartridge bearing - 6-bolt disc - 12 x 100mm thru axle - 28H |
| Hub R | Sealed cartridge bearing - 6-bolt disc - QR - 28H |
| Spokes | Double butted stainless |
| Axles | VAAST M12 F / QR R |
| Handlebar | VAAST Urban Pro - 6061 butted aluminum |
| Stem | VAAST 3D forged |
| Grips / Tape | VAAST Dual Density |
| Seat Post | VAAST Micro adjust aluminum - 27.2mm x 350mm |
| Saddle | VAAST Urban Sport |
LIGHTER, STIFFER, PROFOUNDLY BETTER.
VAAST Bikes is the first to use ALLITE® SUPER MAGNESIUM™, a true innovation in material science. 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 that feels like no other.
DESIGNED FOR THE URBAN JUNGLE
The Urban Model U/1 was designed for what most people who venture out on a bike need. The U/1 is fast, light, and nimble on all surfaces.
COMFORTABLE AND SPORTY
The U/1 exists to get you anywhere a paved route will allow you to go on a daily basis in a surprisingly comfortable way. When equipped with 650b wheels and tires it’s also a capable bike on gravel roads, fire roads, and suitable for other light trail adventures.