Bicycle Shaped Object

Bicycle Shaped Object or BSO is a jargon typically used by people to refer poor quality bicycles. It is alleged that large supermarkets with no history or experience in bicycle industry, import and sell cheap quality push bikes. These bikes are un-assembled and come in a box and are called 'flat pack bikes'. These bicycles often feature premium accessories like disc brakes, index shifters, and shocks at very low prices. These bicycles may be heavy, have poor quality gear shifting and brakes. Pre-assembled bikes may be poorly assembled and some owners report parts falling off the bike shortly after purchase. Generally these bicycle are made in Asian countries (primarily China) from generic bicycle manufacturers and are shipped under various brand names. Although some of these bicycle do provide good service for some time, most do not and may go out of service much quicker than branded bicycles (assuming similar use).
Possible disadvantages
Handlebars and controls
May be poorly aligned or loose. These controls need to been tightened up just after purchase. Quality of the fasteners may be poor and they may become loose in transit. May be equipped with grip shifters which perform far below quality bicycles and fail soon after purchase.
Wheels
The front and rear wheels may not be aligned correctly. Brake arms may contact the edge of the tyre. Wheels may lose firmness and bend after a few weeks/months of use.
Balls within the bearing assembly (rear hub) may break under normal pressure thus cause mis-rotation and noise which may lead to loss of control and riding pleasure.
Brakes
Brakes may be one of the weakest points of these bicycles. They may lean over to the side. When applying the brakes, the brake arms may come in to contact with the tyre. Springs within the brakes may loose tension quickly thus causing the brakes to touch the rim/wheel even when the brake lever is released. Brake levers may be made out of plastic and break after minor falls.
Gears
The front derailleur may be too high above the front chain set, thus the gears do not change properly, or do not change at all.
Frame
These bicycles may be made with a cheap and heavy frame, with poor quality fit and finish. They may rust quickly.
Price range
Usually between AU $80 to $200 (Australian Dollars)
 
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