Here are the best budget exercise bikes under $500. ... Best warranty on a budget exercise bike:Luminofit Indoor Cycling Bike. Luminofit Indoor Cycling Bike. $169.99 at Amazon. What we like.

Luminofit Indoor Cycling Bike $169.99 at Amazon. This bike is made from durable stainless steel and has a heavy-duty flywheel for increased stability while riding, according to the brand.