6KU Fixie Bike

Looking for a good bike at a low price? Then the 6KU Fixie is what you’re looking for. It’s the dream single-speed bike that is well-built, sturdy, and ideal for short commutes. Buy it, ride it, and we promise you’ll have a smile on your face. There is no other fixie out there like the 6KU.  

All 6KU Fixies come with a $30 value of FREE tools included with every bike purchase.

  • Comfortable Steel Frame
  • Reliable Front and Rear Brakes
  • Fixed or Freewheel with a Flip-Flop Hub
  • Easy Maintenance and Upkeep
  • 30-Day Hassle-Free Return Policy
What's Included
Find My Size
How to Build
What's Included
Find My Size

Full Geometry Chart


4'11" - 5'2"
5'2" - 5'5"
5'5" - 5'9"
5'9" - 6'1"
6'1" - 6'5"
A | Top Tube 483 510 535 560 580
B | Seat Tube C-T 420 510 540 570 600
C | Stand Over 722 762 787 815 850
D | Stack 492 500 520 551 574
E | Reach 372 383 395 397 405
F | Head Tube Angle 73° 73° 73° 73° 73°
G | Seat Tube Angle 74° 74° 73° 73° 72°
H | Fork Rake 38 37 37 37 37
I | B.B. Drop 60 60 60 60 60
J | Wheelbase 961 971 972 980 992
K | Chain Stay 400 400 400 400 400
L | Head Tube 85 90 105 135 160
How to Build

Customer Reviews

Based on 1009 reviews

The bike is good but the tires leak air from the rims so I can’t even ride it since the tires won’t get full . It was 275 dollars and I expected to build it and fill the tires up and be able to ride it but I can’t.

Zachary Russell

I’ve been riding since I got the bike had one before really dug the fixed gear. This bike is epic well built and I get to work in less than 10 mins can’t been an ol’fixie mane 🤙🏼 mahalo from Texas

Nicole V
Frame seems to have been welded at an angle.

To whom it may concern, I received a brand new bike a week ago and notice the back joint was welded on at an angle. I’ve previously had issue with brakes and bikes and am concerned that the welding is a problem if it effects my wheels and brakes. i would like to speak with someone who can replace the bike. Please email or reach via phone at [****] Thank you Nicole

Great value, easy to assemble, fun to ride

I’m not an avid cyclist, I’m just looking for a simple bike for short rides to town. This bike looks great and appears to be decently crafted. The price can’t be beat. This is the first bike I’ve bought for my self in 30 years. I was looking for something different so chose the fixie. As far as size I’m 5’-9” 190lbs and chose the large. Is not want to go smaller.

Welds are smooth and complete. The breaks are basic and effective. They require some adjustment out of the box. I had this road ready in about 20 minutes. Pedals are simple plastic. The seat is a bit hard so you may want to upgrade that eventually

Christopher M
Fixie review

Easy enough to assemble, and tools needed were included. The rear brake may need adjusting or tightening, but I’ve had no issues with the bike while riding - just a comfort / preference thing I’ve not set aside time to do.