The Warehouse has apologised for an "unacceptable" advertisement that described boys' bikes with features easy enough for a girl to use.
The description has raised the ire of customers, forcing the company to make changes in the wording used to advertise the bikes on the company's website.
The children's bikes with the offensive wording includes the Milazo Boys' 20-inch Matt Black BMX Bike-in-box 408 and Milazo 20-inch Bike-in-Box 725 BMX Camo.
In a spelling mistake-filled product description, it recommended the bike for children 8 years and above and listed a number of features and benefits.
They included a front and rear double safety hand-brake system, for more speed and accuracy, and a strong steel frame and fork with safety reflectors.