My son and daughter started racing last year with old and I mean old redline bikes that were too small for them. They liked racing and I wasn't sure if they would stay in it so I bought them two 20" DK Sentry orange and white bikes. The deal was that they had to pay for half of the cost just to make sure they wanted to race. We are very pleased with the bikes and they are built very well. The bikes have good components and are durable. The best you can buy for the price if your looking for a beginner to intermediate racing bike.