6KU’s steel fixed-gear bike comes in a wide range of sizes, which offered more choices to buyers.
The handlebars were described as comfortable by one expert, while the Oury brand grips were noted as a quality brand.
Satisfied riders appreciated the wide range of color combinations – and the look of the wide rim wheels.
The steel model of 6KU’s fixed-gear has stayed consistent for years. Some users report that they have ridden this model for two or four years with few problems.

Several people categorized the 6KU fixie as a good casual or starter bike.
It is an undeniably low-cost machine. Quite a few buyers saw it as a good value purchase.
Some folk found it easy to assemble.
A few even described this ride as solid or rugged.

6 reasons not to buy

Multiple owners commented on how heavy the 6KU is, due to the Hi-Tensile steel frame and thick deep-v rims.
There were a few reports of cranks breaking and pedals shearing off.
More than one consumer felt that it was not a reliable long-term ride. One rider replaced all parts after 3 years of daily use.
Braking was often described as mediocre, especially until the brake pads wore through the painted rims.
It wasn’t a rarity to hear reports of the bike arriving with missing or damaged parts.
There was a discrepancy between colors as seen online and what was delivered.

Bottom line

It’s a low-cost singlespeed / fixed-gear bike made of a type of steel that increases weight but cuts price. The unnecessary deep-v rims looked good to consumers but added to this weight. That said, buyers found the 6KU attractive and it has its decent share of satisfied casual riders and short-distance commuters. From all the reports we read, it seems to have less problems than some other singlespeeds in this price range.