Shwinn question?

Question

how MUCH does it cost to buy the peice that shifts the back gears on a speed bike ? ?

Answer 1

Just like on a motorcycle or car, there are a giant number of derailleurs (rear shifter thing at the back wheel) out there in a stunning array of qualities. They range in price from a few dollars to over $600... but not all of them are interchangable.

Since Schwinn makes bikes from $89 Walmart grade to $5000 professional quality there is just no way we can answer without more info.