Designed to fit kids ages 3 to 6, the Kettler Classic Flyer Retro Bike is a well-built bike that will withstand some abuse. It is on the heavy side, however, making it difficult for younger kids to pedal.
Wobbly little wheels. Some users complain that the Kettler Classic Flyer Retro Bike has wobbly or unstable training wheels. One Amazon.com customer complains, "[T]he training wheels do not support the bike evenly so the whole bike wobbles, making our 3-year old scared to ride it." However, replacement training wheels are widely available.
The bike is also fairly heavy, weighing 22 pounds. Another Amazon.com customer writes, "This is a very high-quality bike, super sturdy and looks really cool. However, it is so HEAVY that my son has difficulty pedaling it, and he is definitely not small for his age."
Some users complain that assembly isn't easy and describe the directions as inadequate. After the building is complete, the bike is easy to maintain, and parents stick with the Classic Flyer Retro Bike for its reliable use from child to child.
Heavy duty. Although the weight of the Classic Flyer Retro Bike can make pedaling a challenge for small children, it is a solidly constructed bike. The steel frame will prove durable even under the abuse of the rowdiest kids, owners say. One Amazon.com customer attests: "My 7- and 9-year-old nieces were riding it for fun (way too small for them of course) and it withstood their play so the bike is very sturdy." This is promising evidence of a long-lasting bike.
Fast and reliable. Broken or missing hardware is a common problem when buying this bike online, reviewers say. However, customer service promptly resolves any shipping issues, reviewers say. In one such exemplary case, a customer said a necessary piece for screwing on the pedal was faulty. After emailing the company, he writes, "They let me know that the pedal would be in the mail that day and would hopefully reach us by my daughter's birthday. It did!"
Amazon.com contains only handful of reviews for the Kettler Classic Flyer Retro Bike, which used to be call the El Toro. The bike earns an overall rating of 3.3 out of 5 stars from them. The reviews are mostly positive, with only one very negative review.
Review: Kettler El Toro Boys Bike (12-Inch Wheels), Contributors to Amazon.com, As of June 2013
A handful of Amazon.com customers leave reviews for the Kettler Violet girls' bike, which is now called the Classic Flyer Retro bike. The bike got an overall rating of 3.5 out of 5 stars, and the reviews offer some insight into the bike, based on the personal experiences of the customers.
Review: Kettler Violet Girls' Bike (12-Inch Wheels), Contributors to Amazon.com, As of June 2013
There are only a handful of reviews on Buzzillions.com for the Kettler Violet (now called the Classic Flyer Retro Bike). All give the bike an overall rating of 5 out of 5 stars, but they lack constructive feedback.
Review: Pulse Violet 12" Girls' Bicycle, Contributors to Buzzillions.com, As of June 2011
The Classic Flyer (listed under the ambiguous title Kettler 12 inch bike) receives a Readers' Choice for the best kids bike in its size. They offer a brief explanation of why they chose the bike, as well as a link to buy it.
Review: Babble Best Picks: Kids Bikes, Michelle Horton, Not dated